AN INVESTIGATION OF CAVITATION PHENOMENONN DUE FLOW PAST OBSTACLES IN CHANNELS
|
|
- Lee Cook
- 5 years ago
- Views:
Transcription
1 International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 13, December 2018, pp , Article ID: IJCIET_09_13_0444 Available online at aeme.com/ijciet/issues.asp?jtype=ijciet&vtype= =9&IType=13 ISSN Print: and ISSN Online: IAEME Publication Scopus Indexed AN INVESTIGATION OF CAVITATION PHENOMENONN DUE FLOW PAST OBSTACLES IN CHANNELS Faten Rashid Al-halidi Eng. at Ministry of Education, Iraq ABSTRACT The movement of fluid flow through bounded or unbounded channel can be found in many practical and industrial applications on a very wide scale. The flow problem of fluids usually subjected to different factors and characteristics that should be involved when dealing with such problems. The flow past an obstacle in a channel produces a phenomenon nown as cavitation. The cavity is a region appears behind the obstacle. This cavity region is of pressure equal to zero, and the study of such region is still needs more studies. The studies require investigating many different factors and problems, and the most important of these problems is that the free surface location of the fluid in its final form, which is usually a major problem and should be computed at first. The investigation of the flow problem is quite complicated in its mathematical equations and also needs algorithms achieve the free surface location within a prescribed acceptable error. The present paper investigates the cavitation and introduces a new numerical solution algorithm. The results due to the present paper are compared with previous results with a very good agreement. Keywords: Cavitation, Stream Function, Types of Obstacles, Boundary Element Method. Cite this Article: Faten Rashid Al-halidi, An Investigation of Cavitation Phenomenon Due Flow Past Obstacles In Channels, International Journal of Civil Engineering and Technology (IJCIET) 9(13), 2018, pp et/issues.asp?jtype=ijciet&vtype=9&itype e=13 1. INTRODUCTION Mechanics are the study of forces and movements, therefore, fluid mechanics is the study of the forces and movements in fluids, but what does the word "fluid" mean? We can all mention clear examples of those fluids (air, water, gasoline, gasoline, lubricating oil and mil). We can also mention some examples that are obviously not fluids such as iron, diamonds, rubber and paper that are classified as solids, but there are other forms of matter such as jelly, peanut butter, mayonnaise, toothpaste, tar and baed dough that have intermediates between fluids and solids [1-5].The ideal fluid is the fluid in which there is no friction or viscosity. It does editor@iaeme.com
2 An Investigation of Cavitation Phenomenon Due Flow Past Obstacles In Channels not compress and does not exist, in fact, scientists have assumed it and have certain characteristics to facilitate the study of fluid having the criteria, in-compressible, regular and non-viscous. In physics there is an ideal fluid, an unreal fluid that does not exist in nature, but is adopted by physicists to facilitate the study of fluids and facilitate calculations with the procedure Some changes are in the case of non-ideal fluid, and the ideal fluid is characterized as a non-compressible, non-vortex material, but its flow is uniform[6]. It is also characterized as non-viscous or in other words no friction forces exist between its molecules. A cavity is a zone of steam that occurs behind a fluid-bound collision and occurs in small fluid-free liquid areas, which are the result of the forces acting on the liquid, and also occurs when the liquid undergoes rapid changes in pressure [7-10]. Causing cavities in the fluid where the pressure is low or there is no pressure originally, when these areas are subjected to higher pressure, the blans explode and can generate a severe shoc wave [11].The flow past an obstacle in a channel produces a phenomenon nown as cavitation. The cavity is a region appears behind the obstacle, this cavity region is of pressure equal to zero, and the study of such region is still needs more studies [12-14]. The studies require investigating many different factors and problems, and the most important of these problems is that the free surface location of the fluid in its final form, which is usually a major problem and required determination first. The investigation of the cavity flow problem is quite complicated in its mathematical equations and also needs algorithms achieve the free surface location within a prescribed acceptable error. Cavitating flow are used to replicate a range of natural river flow velocities to determine, the nature of any cavitation damage caused by clear water to roc surfaces under flood durations. In engineering applications, cavitation plays a major role in surface sea-going vessel design and operation, as well as in hydraulic equipment. Propellers, hydrofoil ships, hydraulic turbines and pumps may suffer from its consequences in many ways. Another worldwide application for cavitation is the hydrofoils in navigation or in aerofoils, some of these applications are shown in figure (1). The present paper, investigates the cavitation and introduces a new numerical solution algorithm. The results due to the present paper are compared with previous results with a very good agreement. Figure 1 An experiment of NASA hydrofoil 2. MATHEMATICAL DESCRIPTION AND FORMULATION Consider the movement of a 2-D, fluid flow of the criteria, steady, ir-rotational, incompressible, and the flow will be formulated using Laplace equation [13]: x y = 0, x, y Ω In equation (1), the, represents the potential and it can be re-cast as: (1) = 1 + i (2) editor@iaeme.com
3 Faten Rashid Al-halidi The is defined as the perturbation potential, while is the incident potential. The corresponds to the uni-form in-flow and its magnitude ( xcosβ ysin β ) i = U + Over the free surface, i U at an angle of attac β : (3) i = 0 (4) Where n is the outward unit normal The velocity of the cavity usually ept constant, Q c = U 1 ( 1 + η )2 (5) Derivation the boundary integral equation Start with Green's 2 nd identity, therefore, the B.I. form of equation (1) is [14]: c ( ξ ) ( ξ ) + ( ς ) = Γ Γ ( ξ, ς ) ( ξ, ς ) ( ς ) dγ dγ ( ς ) ( ς ) The is called fundamental solution, mathematically, it taes the following form: 1 = ln( ξ ς ) 2π (7) The fundamental solution defined as the potential at the field point deduced by a unit c ξ given as: charge at a source. In equation (6), the free coefficient ( ) (6) c β 2π ( ξ ) =, 0 c( ξ ) 1 By maing use of discretization technique, equation (6) will be: c Γ = = 1 Ω dω The final boundary integral equation taes the following form: (8) (9) Γ = 1 H i = Γ = 1 G i Q (10) Numerical suggested algorithm Figure (2), represents the new suggested numerical algorithm for tracing the free surface location, based the boundary element method, and stability analysis editor@iaeme.com
4 An Investigation of Cavitation Phenomenon Due Flow Past Obstacles In Channels Figure 2 Flow chart for the new suggested numerical algorithm Numerical Results Figure (3), represents the problem domain with brief details of the fluid flow through a channel and vertical plate as an obstacle. Figure 3 The problem domain editor@iaeme.com
5 Faten Rashid Al-halidi In figure (3): Z The cavity length H The vertical plate length R The maximum location of the F. S. The problem underhand has an analytical solution [1],therefore, the computed results due to the present will be compared with such results so as an achievement of the proposed algorithm will be occurred. Comparison between the results due to the present algorithm and previous available analytical results are in table (1). Table 1 Analytical and computed results z/r R/H q Present Present Anal. Present Anal. z H z/r Anal. R H R/H Fellow up the results due to the present algorithm, figure (3) shows some iterations for tracing the free surface starting from the initial guess, up to the last iteration, for the case of cavity length equals 1.5. Figure 4 The final free surface for three cavity length Then, figure 4 for the same purpose but with cavity length equals 2.5, as it is seen from both fihures, and the previous table one can deduce that the algorithm adopted herein is woring well and promises with excellent results for further applications editor@iaeme.com
6 An Investigation of Cavitation Phenomenon Due Flow Past Obstacles In Channels Figure 5 The final free surface for five cavity lengths. 3. CONCLUSIONS The paper investigated the fluid flow in a channel with a prescribed B. C.,from the investigation, one can conclude the following: A good agreement between the analytical results and the present algorithm. The final form of the free surface has a good agreement with the pghysical behavior expected. The free surface shape, the height and length of the cavity depends on the cavity number. The suggested mathematical model and the numerical algorithm give a promise for further solving more complicated applications. REFERENCES [1] Kinnas, S. A., and Fine, N. E., A numerical non-linear analysis of the flow around 2-D and 3-D partially cavitating hydrofoils, Journal of Fluid Mechanics, Vol. 254,1993, pp [2] Bal, S., A Potential based panel method for 2-D hydrofoils, J. Ocean Eng., Vol.26, 1999, pp [3] Kuiper, G., Cavitation and new blade sections, ASME FED-Cavitation and Gas-Liquid Flow in Fluid Machinery and Devices, Vol.190, [4] Lemonnier, H. and Rowe, A., Another approach in modelling cavitating flows, Journal of Fluid Mechanics, Vol.195, No.2, 1988, pp [5] Dular, M., Bachert, B., Stoffel, B. and Siro, B., Relationship between cavitation structures and cavitation damage, Journal of Wear, Vol.257, 2004, pp editor@iaeme.com
7 Faten Rashid Al-halidi [6] Xie, Z. and He, Y., An approach in modeling cavitating flows with gravity effect, Journal Communications in Nonlinear Science & Numerical Simulation, Vol.2, No.2, 1997, pp , [7] Kinnas, S. A., Lee, H. and Young, Y. L., Boundary element techniques for the prediction of sheet and developed tip vortex cavitation, Electronic Journal of Boundary Elements, Vol. BETEQ 2001, No.2, 2002, pp [8] Kinnas, S. A. and Fine, N. E., A numerical nonlinear analysis of the flow around two- and three-dimensional partially cavitating hydrofoils, J. Fluid Mech., Vol.254, 1993, pp [9] Ahmed S. G. and Wrobel, L. C., An alternative BEM approach for solving cavity flow problems, International Conference Boundary Element Technology XI, Ertein, R.C. and Brebbia, C. A (editors), Hawaii, USA, [10] Ahmed.S.G., Meshrif S.A., A New Numerical Algorithm for 2-D Moving Boundary Problems using Boundary Element Method', Computers and Mathematics with Applications, Volume 58, Issue 7, October 2009, Pages , [11] S. G. Ahmed et. al., 'Boundary Integral Formulation for Binary Alloys from a Cooling Solid Wall', Journal of Computational and Applied Mathematics, Vol. 5, No. 5, 2010, pp [12] Mohamed H.A.,et al. A collocation mesh-free method based on multiple basis functions, Engineering Analysis with Boundary Elements 36, 2012, [13] Ahmed, S.G. "A new algorithm for moving boundary problems subject to periodic boundary conditions", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 16 Issue: 1, 2006, pp.18-27, [14] Suyash B.Kamble, Burasei.D., Avinash R.Kharat And Amol A.Nanniar., Modeling The Filling Phase Of Injection Process Of Technical Parts With Thermoplastics Composites Based On Hemp Fibers, International Journal of Mechanical Engineering and Technology (IJMET), 7(4), 2016, editor@iaeme.com
An-Najah National University Civil Engineering Department. Fluid Mechanics. Chapter 1. General Introduction
1 An-Najah National University Civil Engineering Department Fluid Mechanics Chapter 1 General Introduction 2 What is Fluid Mechanics? Mechanics deals with the behavior of both stationary and moving bodies
More informationTHE SUBORDINATION OF THE THREE- DIMENSIONAL FLOW INSTALLATION IN THE CONVERGING CHANNEL ON RHEOLOGICAL CHARACTERISTICS OF POLYMER STREAM
International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 13, December 2018, pp. 949-956, Article ID: IJCIET_09_13_095 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=9&itype=13
More informationExperiment- To determine the coefficient of impact for vanes. Experiment To determine the coefficient of discharge of an orifice meter.
SUBJECT: FLUID MECHANICS VIVA QUESTIONS (M.E 4 th SEM) Experiment- To determine the coefficient of impact for vanes. Q1. Explain impulse momentum principal. Ans1. Momentum equation is based on Newton s
More informationFluid Mechanics Prof. T.I. Eldho Department of Civil Engineering Indian Institute of Technology, Bombay. Lecture - 17 Laminar and Turbulent flows
Fluid Mechanics Prof. T.I. Eldho Department of Civil Engineering Indian Institute of Technology, Bombay Lecture - 17 Laminar and Turbulent flows Welcome back to the video course on fluid mechanics. In
More informationEFFECTIVENESS OF HEAT TRANSFER INTENSIFIERS IN A FLUID CHANNEL
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 9, September 2018, pp. 58 62, Article ID: IJMET_09_09_007 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=9
More informationA NEW MODELING OF SHEET CAVITATION CONSIDERING THE THERMODYNAMIC EFFECTS. Yumiko Sekino Ebara Cooporation, Ltd., Ota-ku, Tokyo JAPAN
Cav3-GS-6-3 Fifth International Symposium on Cavitation (CAV3) Osaka, Japan, November -4, 3 A NEW MODELING OF SHEET CAVITATION CONSIDERING THE THERMODYNAMIC EFFECTS Takashi Tokumasu Institute of Fluid
More informationNUMERICAL INVESTIGATION OF COUNTER FLOW ISOSCELES RIGHT TRIANGULAR MICROCHANNEL HEAT EXCHANGER
International Journal of Mechanical Engineering and Technology IJMET) Volume 8, Issue 1, January 217, pp. 81 87, Article ID: IJMET_8_1_9 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=8&itype=1
More information6340(Print), ISSN (Online) Volume 3, Issue 3, Sep- Dec (2012) IAEME AND TECHNOLOGY (IJMET)
INTERNATIONAL International Journal of Mechanical JOURNAL Engineering OF MECHANICAL and Technology (IJMET), ENGINEERING ISSN 0976 AND TECHNOLOGY (IJMET) ISSN 0976 6340 (Print) ISSN 0976 6359 (Online) Volume
More informationIntroduction to Marine Hydrodynamics
1896 1920 1987 2006 Introduction to Marine Hydrodynamics (NA235) Department of Naval Architecture and Ocean Engineering School of Naval Architecture, Ocean & Civil Engineering First Assignment The first
More informationFigure 3: Problem 7. (a) 0.9 m (b) 1.8 m (c) 2.7 m (d) 3.6 m
1. For the manometer shown in figure 1, if the absolute pressure at point A is 1.013 10 5 Pa, the absolute pressure at point B is (ρ water =10 3 kg/m 3, ρ Hg =13.56 10 3 kg/m 3, ρ oil = 800kg/m 3 ): (a)
More informationFE Fluids Review March 23, 2012 Steve Burian (Civil & Environmental Engineering)
Topic: Fluid Properties 1. If 6 m 3 of oil weighs 47 kn, calculate its specific weight, density, and specific gravity. 2. 10.0 L of an incompressible liquid exert a force of 20 N at the earth s surface.
More informationFacilities: CHL (Computational Hydrodynamics Laboratory) in ECJ 8.502
Ocean Engineering Group (OEG)/EWRE (August 28, 2018) Spyros A. Kinnas Professor and Director of OTRC s UT Office (Offshore Technology Research Center) Kinnas Home Page @SpyrosKinnas on twitter Research
More informationEFFECT OF BAFFLES GEOMETRY ON HEAT TRANSFER ENHANCEMENT INSIDE CORRUGATED DUCT
International Journal of Mechanical Engineering and Technology (IJMET) Volume 10, Issue 03, March 2019, pp. 555-566. Article ID: IJMET_10_03_057 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=10&itype=3
More informationTOPICS. Density. Pressure. Variation of Pressure with Depth. Pressure Measurements. Buoyant Forces-Archimedes Principle
Lecture 6 Fluids TOPICS Density Pressure Variation of Pressure with Depth Pressure Measurements Buoyant Forces-Archimedes Principle Surface Tension ( External source ) Viscosity ( External source ) Equation
More informationFLUID MECHANICS. Gaza. Chapter CHAPTER 44. Motion of Fluid Particles and Streams. Dr. Khalil Mahmoud ALASTAL
FLUID MECHANICS Gaza Chapter CHAPTER 44 Motion of Fluid Particles and Streams Dr. Khalil Mahmoud ALASTAL Objectives of this Chapter: Introduce concepts necessary to analyze fluids in motion. Identify differences
More informationCOURSE CODE : 3072 COURSE CATEGORY : B PERIODS/ WEEK : 5 PERIODS/ SEMESTER : 75 CREDIT : 5 TIME SCHEDULE
COURSE TITLE : FLUID MECHANICS COURSE CODE : 307 COURSE CATEGORY : B PERIODS/ WEEK : 5 PERIODS/ SEMESTER : 75 CREDIT : 5 TIME SCHEDULE MODULE TOPIC PERIOD 1 Properties of Fluids 0 Fluid Friction and Flow
More informationProject 4: Navier-Stokes Solution to Driven Cavity and Channel Flow Conditions
Project 4: Navier-Stokes Solution to Driven Cavity and Channel Flow Conditions R. S. Sellers MAE 5440, Computational Fluid Dynamics Utah State University, Department of Mechanical and Aerospace Engineering
More informationAnalysis of flow characteristics of a cam rotor pump
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Analysis of flow characteristics of a cam rotor pump To cite this article: Y Y Liu et al 2013 IOP Conf. Ser.: Mater. Sci. Eng. 52 032023
More informationForce analysis of underwater object with supercavitation evolution
Indian Journal of Geo-Marine Sciences Vol. 42(8), December 2013, pp. 957-963 Force analysis of underwater object with supercavitation evolution B C Khoo 1,2,3* & J G Zheng 1,3 1 Department of Mechanical
More informationPERFORMANCE EVALUATION OF OVERLOAD ABSORBING GEAR COUPLINGS
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 12, December 2018, pp. 1240 1255, Article ID: IJMET_09_12_126 Available online at http://www.ia aeme.com/ijmet/issues.asp?jtype=ijmet&vtype=
More informationMECHANICAL PROPERTIES OF FLUIDS:
Important Definitions: MECHANICAL PROPERTIES OF FLUIDS: Fluid: A substance that can flow is called Fluid Both liquids and gases are fluids Pressure: The normal force acting per unit area of a surface is
More informationLEAST-SQUARES FINITE ELEMENT MODELS
LEAST-SQUARES FINITE ELEMENT MODELS General idea of the least-squares formulation applied to an abstract boundary-value problem Works of our group Application to Poisson s equation Application to flows
More informationRate-Dependent Hydroelastic Response of Self-Adaptive Composite Propellers in Fully Wetted and Cavitating Flows
Proceedings of the 7 th International Symposium on Cavitation CAV2009 Paper No. 60 August 17-22, 2009, Ann Arbor, Michigan, USA Rate-Dependent Hydroelastic Response of Self-Adaptive Composite Propellers
More informationStudy of the influence of the resonance changer on the longitudinal vibration of marine propulsion shafting system
Study of the influence of the resonance changer on the longitudinal vibration of marine propulsion shafting system Zhengmin Li 1, Lin He 2, Hanguo Cui 3, Jiangyang He 4, Wei Xu 5 1, 2, 4, 5 Institute of
More informationThe most common methods to identify velocity of flow are pathlines, streaklines and streamlines.
4 FLUID FLOW 4.1 Introduction Many civil engineering problems in fluid mechanics are concerned with fluids in motion. The distribution of potable water, the collection of domestic sewage and storm water,
More informationOPTIMAL DESIGN OF CLUTCH PLATE BASED ON HEAT AND STRUCTURAL PARAMETERS USING CFD AND FEA
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 5, May 2018, pp. 717 724, Article ID: IJMET_09_05_079 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=5
More informationEFFECT OF SOIL TYPE LOCATION ON THE LATERALLY LOADED SINGLE PILE
International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 12, December 2018, pp. 1196 1205, Article ID: IJCIET_09_12 122 Available online at http://www.ia aeme.com/ijciet/issues.asp?jtype=ijciet&vtype=
More informationPrinciples of Convection
Principles of Convection Point Conduction & convection are similar both require the presence of a material medium. But convection requires the presence of fluid motion. Heat transfer through the: Solid
More informationNumerical calculation for cavitation flow of inducer
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Numerical calculation for cavitation flow of inducer To cite this article: C Ning et al 2015 IOP Conf. Ser.: Mater. Sci. Eng. 72 032025
More informationAvailable online at aeme.com/ijmet/issues.asp?jtype=ijmet&vtype= =9&IType=12 ISSN Print: and ISSN
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue, December 8, pp. 98 9, Article ID: IJMET_9 9 Available online at http://www.ia aeme.com/ijmet/issues.asp?jtype=ijmet&vtype=
More informationFALLING FILM FLOW ALONG VERTICAL PLATE WITH TEMPERATURE DEPENDENT PROPERTIES
Proceedings of the International Conference on Mechanical Engineering 2 (ICME2) 8-2 December 2, Dhaka, Bangladesh ICME-TH-6 FALLING FILM FLOW ALONG VERTICAL PLATE WITH TEMPERATURE DEPENDENT PROPERTIES
More informationAnalysis of Transient Natural Convection flow past an Accelerated Infinite Vertical Plate
From the SelectedWorks of Innovative Research Publications IRP India Winter February 1, 015 Analysis of ransient Natural Convection flow past an Accelerated Infinite Vertical Plate Innovative Research
More informationStream line, turbulent flow and Viscosity of liquids - Poiseuille s Method
Stream line, turbulent flow and Viscosity of liquids - Poiseuille s Method Dr D. Arun Kumar Assistant Professor Department of Physical Sciences Bannari Amman Institute of Technology Sathyamangalam General
More informationEQUATIONS OF LAGRANGE MOTION OF A PARTICLE IN A SPIRAL SCREW DEVICE
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 8, August 08, pp. 00 008, Article ID: IJMET_09_08_08 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=8
More informationLecture Note for Open Channel Hydraulics
Chapter -one Introduction to Open Channel Hydraulics 1.1 Definitions Simply stated, Open channel flow is a flow of liquid in a conduit with free space. Open channel flow is particularly applied to understand
More informationA new approach for local similarity solutions of an unsteady hydromagnetic free convective heat transfer flow along a permeable flat surface
International Journal of Advances in Applied Mathematics and Mechanics Volume, Issue : (3) pp. 39-5 Available online at www.ijaamm.com IJAAMM ISSN: 347-59 A new approach for local similarity solutions
More informationAnalysis of flow along smooth side of disc impeller in a pump
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Analysis of flow along smooth side of disc impeller in a pump To cite this article: E M Kraeva 2015 IOP Conf. Ser.: Mater. Sci.
More informationChapter 7 The Energy Equation
Chapter 7 The Energy Equation 7.1 Energy, Work, and Power When matter has energy, the matter can be used to do work. A fluid can have several forms of energy. For example a fluid jet has kinetic energy,
More informationPrediction of Propeller Blade Stress Distribution Through FEA
Research Article Prediction of Propeller Blade Stress Distribution Through FEA Kiam Beng Yeo, Wai Heng Choong and Wen Yen Hau ABSTRACT The Finite Element Analysis (FEA) of marine propeller blade stress
More informationCOMPUTATIONAL ANALYSIS OF ENCAPSULATED THERMAL ENERGY PHASE CHANGE STORAGE SYSTEM: CYLINDRICAL AND SPHERICAL GEOMETRY
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 5, May 2018, pp. 662 668, Article ID: IJMET_09_05_073 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=5
More information(Refer Slide Time: 2:14)
Fluid Dynamics And Turbo Machines. Professor Dr Shamit Bakshi. Department Of Mechanical Engineering. Indian Institute Of Technology Madras. Part A. Module-1. Lecture-3. Introduction To Fluid Flow. (Refer
More informationInterpreting Differential Equations of Transport Phenomena
Interpreting Differential Equations of Transport Phenomena There are a number of techniques generally useful in interpreting and simplifying the mathematical description of physical problems. Here we introduce
More informationAn Experimental Study on Heat Transfer Enhancement of Flat Plates Using Dimples
American Journal of Electrical Power and Energy Systems 2015; 4(4): 34-38 Published online May 28, 2015 (http://www.sciencepublishinggroup.com/j/epes) doi: 10.11648/j.epes.20150404.11 ISSN: 2326-912X (Print);
More informationIntroduction to Turbomachinery
1. Coordinate System Introduction to Turbomachinery Since there are stationary and rotating blades in turbomachines, they tend to form a cylindrical form, represented in three directions; 1. Axial 2. Radial
More informationAN IMPROVED BOUNDARY ELEMENT ANALYSIS OF CAVITATING THREE-DIMENSIONAL HYDROFOILS
CAV2001:sessionB1.006 1 AN IMPROVED BOUNDARY ELEMENT ANALYSIS OF CAVITATING THREE-DIMENSIONAL HYDROFOILS Francesco Salvatore & Pier Giorgio Esposito INSEAN Italian Ship Model Basin, Rome (Italy) Abstract
More informationNumerical Simulation of Downhole Completion Equipment via Computational Fluid Dynamics
, pp.48-52 http://dx.doi.org/10.14257/astl.2014.63.10 Numerical Simulation of Downhole Completion Equipment via Computational Fluid Dynamics Chao Zheng, Yonghong Liu*, Hanxiang Wang, Renjie Ji, Zengkai
More informationJournal of Engineering Science and Technology Review 2 (1) (2009) Research Article
Journal of Engineering Science and Technology Review 2 (1) (2009) 118-122 Research Article JOURNAL OF Engineering Science and Technology Review www.jestr.org Thin film flow of non-newtonian fluids on a
More informationANALYSIS OF TRANSIENT HEAT CONDUCTION IN DIFFERENT GEOMETRIES BY POLYNOMIAL APPROXIMATION METHOD
Int. J. Mech. Eng. & Rob. Res. Devanshu Prasad, Research Paper ISSN 78 9 www.ijmerr.com Vol., No., April IJMERR. All Rights Reserved ANALYSIS OF TRANSIENT HEAT CONDUCTION IN DIFFERENT GEOMETRIES Y POLYNOMIAL
More informationch-01.qxd 8/4/04 2:33 PM Page 1 Part 1 Basic Principles of Open Channel Flows
ch-01.qxd 8/4/04 2:33 PM Page 1 Part 1 Basic Principles of Open Channel Flows ch-01.qxd 8/4/04 2:33 PM Page 3 Introduction 1 Summary The introduction chapter reviews briefly the basic fluid properties
More informationLecture 2 Flow classifications and continuity
Lecture 2 Flow classifications and continuity Dr Tim Gough: t.gough@bradford.ac.uk General information 1 No tutorial week 3 3 rd October 2013 this Thursday. Attempt tutorial based on examples from today
More informationPetroleum Engineering Dept. Fluid Mechanics Second Stage Dr. Ahmed K. Alshara
Continents Chapter 1. Fluid Mechanics -Properties of fluids -Density, specific gravity, specific volume and Viscosity -Newtonian and non Newtonian fluids -Surface tension Compressibility -Pressure -Cavitations
More informationTransient free convective flow of a micropolar fluid between two vertical walls
Available online at http://ijim.srbiau.ac.ir/ Int. J. Industrial Mathematics (ISSN 2008-5621) Vol. 5, No. 2, 2013 Article ID IJIM-00311, 9 pages Research Article Transient free convective flow of a micropolar
More informationFluids Matter (Exam Part 1)
Name: Class: _ Date: _ Fluids Matter (Exam Part 1) /50 Marks True/False Indicate whether the sentence or statement is true or false. 1. In our first lab experiment, the purpose was to: Propel an empty
More informationCavitation Control on Hydrofoils
Proceedings of the International Conference on Heat Transfer and Fluid Flow Prague, Czech Republic, August 11-12, 2014 Paper No. 181 Cavitation Control on Hydrofoils Mohammad Mortezazadeh, Ali Katal, Khodayar
More informationON CONTINUITY CONDITIONS FOR THE PASSAGE OF SOUND THROUGH THE BOUNDARIES OF MEDIA
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 11, November 2018, pp. 2015 2020, Article ID: IJMET_09_11 212 Available online at http://www.ia aeme.com/ijmet/issues.asp?jtype=ijmet&vtype=
More informationDISCLAIMER. Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.
; i i : L4 0 t DSCLAMER Portions of this document may be illegible in electronic image products. mages are produced from the best available original document. EVALUATON OF THE HUMDFCATON REQTJREMENTS OF
More informationPipe Flow/Friction Factor Calculations using Excel Spreadsheets
Pipe Flow/Friction Factor Calculations using Excel Spreadsheets Harlan H. Bengtson, PE, PhD Emeritus Professor of Civil Engineering Southern Illinois University Edwardsville Table of Contents Introduction
More informationNumerical Study of Pressure and Velocity Distribution Analysis of Centrifugal Pump
International Journal of Thermal Technologies, Vol.1, No.1 (Dec. 2011) Research Article Numerical Study of Pressure and Velocity Distribution Analysis of Centrifugal Pump Munish Gupta 1, Satish Kumar 2,
More informationThe Phenomena of Oil Whirl and Oil Whip
Ali M. Al-Shurafa, Vibration Engineer Saudi Electricity Company- Ghazlan Power Plant Saudi Arabia ashurafa@hotmail.com The Phenomena of Oil Whirl and Oil Whip 1. Introduction Large machines mounted on
More informationEFFECT OF VACANCY DEFECTS ON THE MECHANICAL PROPERTIES OF CARBON NANOTUBE REINFORCED POLYPROPYLENE
International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 7, July 2017, pp. 1370 1375, Article ID: IJMET_08_07_148 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=8&itype=7
More informationWALL ROUGHNESS EFFECTS ON SHOCK BOUNDARY LAYER INTERACTION FLOWS
ISSN (Online) : 2319-8753 ISSN (Print) : 2347-6710 International Journal of Innovative Research in Science, Engineering and Technology An ISO 3297: 2007 Certified Organization, Volume 2, Special Issue
More informationOn the Dynamic Behaviors of Large Vessels Propulsion System with Hull Excitations
On the Dynamic Behaviors of Large Vessels Propulsion System with Hull Excitations Zhe Tian 1,2, Cong Zhang 1, Xinping Yan 1, Yeping Xiong 2 1. School of Energy and Power Engineering Wuhan University of
More informationREGRESSION ANALYSIS OF SHORT TERM TIME-SETTLEMENT RESPONSE OF SOFT CLAYEY SOIL AT CONSTANT LOADING CONDITION
International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 10, October 2018, pp. 182 1840, Article ID: IJCIET_09_10_182 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=9&itype=10
More informationUNSTEADY EFFECTS IN 2D MODELLING OF PARTIAL CAVITATION USING BEM
MÉTODOS COMPUTACIONAIS EM ENGENHARIA Lisboa, 31 de Maio - 2 de Junho, 24 APMTAC, Portugal 24 UNSTEADY EFFECTS IN 2D MODELLING OF PARTIAL CAVITATION USING BEM Guilherme Vaz, Johan Bosschers and J. A. C.
More informationFluid Mechanics Qualifying Examination Sample Exam 2
Fluid Mechanics Qualifying Examination Sample Exam 2 Allotted Time: 3 Hours The exam is closed book and closed notes. Students are allowed one (double-sided) formula sheet. There are five questions on
More informationHoney Coiling - A Study on the Gravitational Regime of Liquid Rope Coiling
Honey Coiling - A Study on the Gravitational Regime of Liquid Rope Coiling Patrick Meister, MNG Rämibühl, patrickmeister@ymail.com 1 Introduction We report on the coiling motion a falling stream of viscous
More informationENGINEERING FLUID MECHANICS. CHAPTER 1 Properties of Fluids
CHAPTER 1 Properties of Fluids ENGINEERING FLUID MECHANICS 1.1 Introduction 1.2 Development of Fluid Mechanics 1.3 Units of Measurement (SI units) 1.4 Mass, Density, Specific Weight, Specific Volume, Specific
More information1. Introduction, fluid properties (1.1, 2.8, 4.1, and handouts)
1. Introduction, fluid properties (1.1, 2.8, 4.1, and handouts) Introduction, general information Course overview Fluids as a continuum Density Compressibility Viscosity Exercises: A1 Fluid mechanics Fluid
More informationCHAPTER 6 Fluids Engineering. SKMM1922 Introduction of Mechanical Engineering
CHAPTER 6 Fluids Engineering SKMM1922 Introduction of Mechanical Engineering Chapter Objectives Recognize the application of fluids engineering to such diverse fields as microfluidics, aerodynamics, sports
More informationIf there is convective heat transfer from outer surface to fluid maintained at T W.
Heat Transfer 1. What are the different modes of heat transfer? Explain with examples. 2. State Fourier s Law of heat conduction? Write some of their applications. 3. State the effect of variation of temperature
More informationNUMERICAL INVESTIGATION OF PERFORMANCE OF KAPLAN TURBINE WITH DRAFT TUBE
NUMERICAL INVESTIGATION OF PERFORMANCE OF KAPLAN TURBINE WITH DRAFT TUBE Mohamed Adel and Nabil H. Mostafa ABSTRACT Mechanical Power Engineering Department, Engineering Faculty Zagazig University, Zagazig,
More informationPetroleum Engineering Department Fluid Mechanics Second Stage Assist Prof. Dr. Ahmed K. Alshara
Continents Petroleum Engineering Department Fluid Mechanics Second Stage Assist Prof. Dr. Ahmed K. Alshara Chapter 1. Fluid Mechanics -Properties of fluids -Density, specific gravity, specific volume and
More informationSLIP VELOCITY ON THE FERROFLUID LUBRICATION OF THE POROUS EXPONENTIAL SLIDER BEARING
International Journal of Advanced Research in Engineering and Technology (IJARET) Volume 9, Issue 3, May - June 18, pp. 1 3, Article ID: IJARET_9_3_8 Available online at http://www.iaeme.com/ijaret/issues.asp?jtype=ijaret&vtype=9&itype=3
More informationCFD in COMSOL Multiphysics
CFD in COMSOL Multiphysics Mats Nigam Copyright 2016 COMSOL. Any of the images, text, and equations here may be copied and modified for your own internal use. All trademarks are the property of their respective
More informationAnalysis of Natural Convection Flow in a Trapezoidal Cavity Containing a Rectangular Heated Body in Presence of External Oriented Magnetic Field
Publications Available Online J. Sci. Res. 10 (1), 11-23 (2018) JOURNAL OF SCIENTIFIC RESEARCH www.banglajol.info/index.php/jsr Analysis of Natural Convection Flow in a Trapezoidal Cavity Containing a
More informationParash Moni Thakur. Gopal Ch. Hazarika
International Journal of Scientific and Innovative Mathematical Research (IJSIMR) Volume 2, Issue 6, June 2014, PP 554-566 ISSN 2347-307X (Print) & ISSN 2347-3142 (Online) www.arcjournals.org Effects of
More informationAn Overview of Impellers, Velocity Profile and Reactor Design
An Overview of s, Velocity Profile and Reactor Design Praveen Patel 1, Pranay Vaidya 1, Gurmeet Singh 2 1 Indian Institute of Technology Bombay, India 1 Indian Oil Corporation Limited, R&D Centre Faridabad
More informationDETC COMPUTER MODELING OF IMPRESSED CURRENT CATHODIC PROTECTION (ICCP) SYSTEM ANODES
Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2009 August 30 - September 2, 2009, San Diego, California,
More information2.The lines that are tangent to the velocity vectors throughout the flow field are called steady flow lines. True or False A. True B.
CHAPTER 03 1. Write Newton's second law of motion. YOUR ANSWER: F = ma 2.The lines that are tangent to the velocity vectors throughout the flow field are called steady flow lines. True or False 3.Streamwise
More informationBEHAVIOR OF BUILDING FRAMES ON SOILS OF VARYING PLASTICITY INDEX
International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 1, January 2017, pp. 623 627 Article ID: IJCIET_08_01_072 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=8&itype=1
More informationEXPERIMENTAL AND NUMERICAL SIMULATION OF TSUNAMI BORE IMPACT ON A BUILDING
International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 4, July-August 216, pp. 13 23, Article ID: IJCIET_7_4_2 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=4
More informationA POTENTIAL PANEL METHOD FOR THE PREDICTION OF MIDCHORD FACE AND BACK CAVITATION
A POTENTIAL PANEL METHOD FOR THE PREDICTION OF MIDCHORD FACE AND BACK CAVITATION S. Gaggero & S. Brizzolara, University of Genoa (IT), Department of Naval Architecture and Marine Engineering SUMMARY Accurate
More informationHydro-Structure Analysis of Composite Marine Propeller under Pressure Hydrodynamic Loading
American Journal of Mechanical Engineering, 2015, Vol. 3, No. 2, 41-46 Available online at http://pubs.sciepub.com/ajme/3/2/2 Science and Education Publishing DOI:10.12691/ajme-3-2-2 Hydro-Structure Analysis
More informationANALYSIS OF THE AXIAL BEHAVIOR OF A DRILLING RISER WITH A SUSPENDED MASS
Copyright 2013 by ABCM ANALYSIS OF THE AXIAL BEHAVIOR OF A DRILLING RISER WITH A SUSPENDED MASS Marcelo Anunciação Jaculli José Ricardo Pelaquim Mendes Celso Kazuyuki Morooka Dept. of Petroleum Engineering
More informationContents. I Introduction 1. Preface. xiii
Contents Preface xiii I Introduction 1 1 Continuous matter 3 1.1 Molecules................................ 4 1.2 The continuum approximation.................... 6 1.3 Newtonian mechanics.........................
More informationNicholas J. Giordano. Chapter 10 Fluids
Nicholas J. Giordano www.cengage.com/physics/giordano Chapter 10 Fluids Fluids A fluid may be either a liquid or a gas Some characteristics of a fluid Flows from one place to another Shape varies according
More informationThermal Simulation for Design Validation of Electrical Components in Vibration Monitoring Equipment
International Journal of Thermal Technologies E-ISSN 2277 4114 2017 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijtt/ Research Article Thermal Simulation for Design Validation
More informationTurbine flowmeter and viscosity effects of liquid hydrocarbons
Turbine flowmeter and viscosity effects of liquid hydrocarbons Valmir Ruiz, Marcos Tadeu Pereira,2, Nilson Massami Taira Institute for Technological Research IPT, 2 Universidade de São Paulo Avenida Prof.
More informationUniversity of Hail Faculty of Engineering DEPARTMENT OF MECHANICAL ENGINEERING. ME Fluid Mechanics Lecture notes. Chapter 1
University of Hail Faculty of Engineering DEPARTMENT OF MECHANICAL ENGINEERING ME 311 - Fluid Mechanics Lecture notes Chapter 1 Introduction and fluid properties Prepared by : Dr. N. Ait Messaoudene Based
More informationPhysical Science Exam 3 Study Guide. Dr. Karoline Rostamiani. Chapter 3
Chapter 3 Section 1 States of Matter What is matter made of? What are the three most common states of matter? How do particles behave in each state of matter? Solids, Liquids, and Gases Materials can be
More informationBME-A PREVIOUS YEAR QUESTIONS
BME-A PREVIOUS YEAR QUESTIONS CREDITS CHANGE ACCHA HAI TEAM UNIT-1 Introduction: Introduction to Thermodynamics, Concepts of systems, control volume, state, properties, equilibrium, quasi-static process,
More informationNumerical study of the structure flow of the gas-vapor mixture in a channel with injection of water droplets
EPJ Web of Conferences 76, 01027 (2014) DOI: 10.1051/epjconf/20147601027 C Owned by the authors, published by EDP Sciences, 2014 Numerical study of the structure flow of the gas-vapor mixture in a channel
More informationFluid Mechanics II 3 credit hour. External flows. Course teacher Dr. M. Mahbubur Razzaque Professor Department of Mechanical Engineering BUET 1
COURSE NUMBER: ME 323 Fluid Mechanics II 3 credit hour External flows Course teacher Dr. M. Mahbubur Razzaque Professor Department of Mechanical Engineering BUET 1 External flows The study of external
More informationOn the exact solution of incompressible viscous flows with variable viscosity
Advances in Fluid Mechanics IX 481 On the exact solution of incompressible viscous flows with variable viscosity A. Fatsis 1, J. Statharas, A. Panoutsopoulou 3 & N. Vlachakis 1 1 Technological University
More informationHot Runner Technology
Peter Unger Hot Runner Technology Sample Chapter : Basic Aspects of Heat Technology ISBNs 978--56990-395-7-56990-395-6 HANSER Hanser Publishers, Munich Hanser Publications, Cincinnati 9 Basic Aspects of
More informationChapter 10 Flow in Conduits
Chapter 10 Flow in Conduits 10.1 Classifying Flow Laminar Flow and Turbulent Flow Laminar flow Unpredictable Turbulent flow Near entrance: undeveloped developing flow In developing flow, the wall shear
More informationDESIGN AND ANALYSIS OF VIBRATION AND HARSHNESS CONTROL FOR AUTOMOTIVE STRUCTURES USING FINITE ELEMENT ANALYSIS
International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 10, October 2017, pp. 1364 1370, Article ID: IJCIET_08_10_139 Available online at http://http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=8&itype=10
More informationISSN Article
Entropy 23, 5, 28-299; doi:.339/e5628 OPEN ACCESS entropy ISSN 99-43 www.mdpi.com/journal/entropy Article Analysis of Entropy Generation Rate in an Unsteady Porous Channel Flow with Navier Slip and Convective
More informationEFFECTS OF SURFACE ROUGHNESS WITH MHD ON THE MICRO POLAR FLUID FLOW BETWEEN ROUGH ELLIPTIC PLATES
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9 Issue November 8 pp. 586 598 Article ID: IJMET_9 58 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=
More informationExperimental and CFD analysis for prediction of vortex and swirl angle in the pump sump station model
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Experimental and CFD analysis for prediction of vortex and swirl angle in the pump sump station model To cite this article: C G Kim
More information