ASPHALT WETTING DYNAMICS
|
|
- Jeffery Strickland
- 6 years ago
- Views:
Transcription
1 ASPHALT WETTING DYNAMICS Troy Pauli, Fran Miknis, Appy Beemer, Julie Miller, Mike Farrar, and Will Wiser 5 TH Annual Pavement Performance Prediction Symposium Adhesion & Cohesion of Asphalt Pavements Cheyenne, Wyoming June nd and 4 th, 005
2 Comments on Wetting Contact Angle Hysteresis Dynamic Wetting (Current Theories) Asphalt Adhesive Properties Lubrication Theory (Translational Dynamic Contact-line Wetting) Water Interactions (Rotational Dynamic Contact-line Wetting) Adhesion Hysteresis, Friction and Aggregate Surface Roughness A Look at Stripping OVERVIEW
3 Wetting Drop Experiment θ a θ r
4 Advancing Contact Angle, θ a γ s = γ sl + γ cosθ l a θ a θ r
5 Receding Contact Angle, θ r θa θ r γ s f = γ sl + γ cosθ l r
6 Film Pressure, π π = f γ s γ s π = γ ( cosθ cosθ ) l r a θ a θ r γ s = γ sl + γ cosθ l a γ s f = γ sl + γ cosθ l r
7 Dynamic Wetting Hydrodynamic Model Ranabothu, S. R., et al. (005) J. Colloid Inter. Sci., (ARTICLE IN PRESS) 3 3 9ηv [ θ ] [ ] ( ) a ( t) = θ (0) + ln L Ls γ 3 3 9ηv [ θ r ( t) ] = [ θ (0)] ln( L Ls ) γ l l Advancing DCA Receding DCA
8 Dynamic Wetting Hydrodynamic Model Ranabothu, S. R., et al. (005) J. Colloid Inter. Sci., (ARTICLE IN PRESS) 3 3 9ηv [ θ ] [ ] ( ) a ( t) = θ (0) + ln L Ls γ 3 3 9ηv [ θ r ( t) ] = [ θ (0)] ln( L Ls ) γ l l Advancing DCA Receding DCA L = γ l ρg Capillary length L s Slip length
9 Dynamic Wetting Hydrodynamic Model Ranabothu, S. R., et al. (005) J. Colloid Inter. Sci., (ARTICLE IN PRESS) 3 3 9ηv [ θ ] [ ] ( ) a ( t) = θ (0) + ln L Ls γ 3 3 9ηv [ θ r ( t) ] = [ θ (0)] ln( L Ls ) γ l l Advancing DCA Receding DCA L L s = γ l ρg Capillary length Slip length N Ca ηv = γ Capillary number l
10 Dynamic Wetting Molecular-kinetic Model Ranabothu, S. R., et al. (005) J. Colloid Inter. Sci., (ARTICLE IN PRESS) kbt cos[ θ ( t) ] = cos[ θ (0)] m arcsinh( v K λ) w λ γ l v: velocity λ: distance between adsorption/desorption sites K w : quasi-equilibrium rate constant
11 Lubrication Theory (Translational Dynamic Contact-line Wetting)
12 Roto-Film Solution Spin Casting Device Initial Solution Concentration-0.167g/mL Spin Rate-600 to 800 rpm Volume Deposited to slide-.0μl
13
14
15
16
17 Filmetrics Thin-film Measurement System
18
19 ω ẑ θˆ rˆ
20 ω ẑ θˆ rˆ
21 Transverse Wave Equation h( r, θ,t t ) = h n 3 h 3 r ω h = h( r, θ,t )
22 Lubrication Theory Translational Dynamic Wetting υ η = z ρω r Viscous Force/Centrifugal Force Balance (per unit Volume) d z υ = ρω r η dz υ z = ρω rz η + c c = υ ρω r( z = h ) = 0 + z η v dυ = z ρω rz η η 0 0 ρω rh + dz
23 Lubrication Theory (cont.) Translational Dynamic Wetting υ 1 1 ρω rhz ρω rz η = Radial Velocity of Film Q h 1 1 = υdz = ρω rhz ρω rz η 0 h 0 dz = ρω rh 3η 3 r h t = ( ) rq r Continuity Equation in terms of Radial Flow per unit Circumference, Q h t = 1 r r ρω r h 3η 3
24 ( ) h H r r r r r t H + + = κ γ ρω η ω υ h H
25 Neat AAD-1 at constant concentration Increasing angular velocity 666
26 Neat AAD-1 at constant concentration Film Thickness, h, nm Angular Velocity, ω, rpm
27 Neat AAD-1 at 4 concentrations Increasing angular velocity 666
28 AAM-1 AAK-1 AAD-1 AAF-1 AAG-1 Asphalt Designation AAC-1 AAB-1 AAA c3-600 c3-700 c3-800 Average Film Thickness (h), nm
29 AAG-1 AAK-1 AAM-1 AAD-1 AAF-1 Asphalt Designation AAC-1 AAB c4-600 c4-700 c4-800 AAA-1 Film Thickness, nm
30 Neat AAD-1 at constant concentration Increasing angular velocity 666
31 AAD-1 PAV-Aged at 60EC, 40-hr Increasing angular velocity 666
32 AAD-1 PAV-Aged at 60EC, 480-hr Increasing angular velocity 666
33 1600 Film Thickness, h (nm) Neat AAD-1 AAD-1, 60 C Aged, 40hr AAD-1, 60 C Aged, 480hr h = a ω + a 1 ω +a Angular Velocity, ω (RPM)
34 AAD-1(w/1.5%ppa) PAV Aged at 60EC, 96-hr Increasing angular velocity 666
35 AAD-1(w/1.5%ppa) PAV Aged at 60EC, 184-hr Increasing angular velocity 666
36 AAD-1(w/1.5%ppa) PAV Aged at 60EC, 60-hr Increasing angular velocity 666
37 Film Thickness, h (nm) Neat AAD-1 1.5%ppa AAD-1-60 C Aged, 96hr 1.5%ppa AAD-1-60 C Aged, 184hr 1.5%ppa AAD-1-60 C Aged, 60hr 1.5%ppa AAD-1-60 C Aged, 36hr h = a ω + a 1 ω + a Angular Velocity, ω (RPM)
38 Film Thickness, h (nm) % ppa-aad-1. 0hr 1.5% ppa AAD-1-60 C Aged, 96hr 1.5% ppa AAD-1-60 C Aged, 184hr 1.5% ppa AAD-1-60 C Aged, 60hr 1.5% ppa AAD-1-60 C Aged, 36hr h = a ω + a 1 ω + a Angular Velocity, ω (RPM)
39 Film Thickness, h (nm) % ppa-aad-1. 0hr 1.5% ppa AAD-1-60 C Aged, 96hr 1.5% ppa AAD-1-60 C Aged, 184hr 1.5% ppa AAD-1-60 C Aged, 60hr 1.5% ppa AAD-1-60 C Aged, 36hr h = a 1 ω + a Angular Velocity, ω (RPM)
40 Lubrication Theory (Rotational Dynamic Contact-line Wetting)
41 γ w θ = 0 α = 0 Water Drop γ a β ρ w γ aw Asphalt ρ > ρ a w
42 Buoyancy Force Balances Capillary Force γ w β ρ w θ α ρ > ρ a w γ a γ aw F b V g( ρ w ρ a ) = F Ca V ρas ρ z w
43 a aw a a z g S γ ρ = 1 aw w w w z g S γ γ ρ = 1 a w aw z z ρ ρ = ( ) a w a w z z ρ ρ ρ = z Derivation of Half-Space for Spreading Coefficient
44 S z g z g aw w a w a w a = γ γ γ ρ ρ ρ ρ 1 1 aw w a S γ γ γ = At pseudo-equilibrium, S w = S a Spreading Coefficient
45
46
47 F b = gk( ρ ρ w a) = + Fbk ( ),( ρ < ρ w a ) F = b gk( ρ ρ w a) = 0,( ρ = ρ w a) F b = gk( ρ ρ w a) = Fbk ( ),( ρ > ρ w a)
48 r Buoyancy Force Balances Viscous Force V F r g V F vis w a w a a a w b = + + ± = = η η η η η υ ρ ρ 3 3 ) ( k k
49 r
50 Terminal Velocity of falling Liquid Drop In a Second Liquid (ρ drop < ρ liquid ) υ = ρ ρ η r g( w a ) a 3 η η a + a + η w 3η w r
51 3 3 z r S w a w a w a a ρ ρ η η η η η υ = + + w a a w a w a a a, ' η η η η η η η η η >> + + = Viscous Force Balances Capillary Force For Water Drop Traversing the Asphalt-Air Interface ) 0,( ) ( a w a w b g ρ ρ ρ ρ = = k F
52 ' z r N S w a Ca a ρ ρ υη = = 3 z r S η a υ Hydrodynamic and Geometric Definitions of Capillary Number & Terminal Velocity For Water Drop Traversing an Interface z r = D /
53 α Angle-α AAA-1 AAB-1 AAC-1 AAD-1 AAF-1 AAG-1 AAK-1 AAM Time, Hours
54 β 90 Angle-β AAA-1 AAB-1 AAC-1 AAD-1 AAF-1 AAG-1 AAK-1 AAM Time, hours
55 Natural Log of Dynamic Viscosity, ln(η a ) AAG-1 AAF-1 AAM AAK AAB-1 AAC AAD-1 AAA Rate of Change in Angle-α, dα/dt, t = 0 to 4hr
56 1000 AAM-1 AAA AAG-1 Film Thickness, h (nm) AAK-1 AAF-1 AAB-1 AAC-1 AAD Spreading Coefficient, S aw (dyne/cm)
57 Lubrication Theory Friction and Aggregate Surface Roughness
58 Model of a Lateral-Action Cantilever Measurement (Frictional Force Microscopy) Bliznyuk, V.N., J.L. Hazel, J. Wu, and V. Tsukruk, Quantitative Probing in Atomic Force Microscopy of Polymer Surfaces (1998). Chapter 15 in Scanning Probe Microscopy of Polymers, Ratner, B.D. and V.V. Tskruk, editors, American Chemical Society Symposium Series 694, Oxford University Press, Oxford. Hookian Force F = k t Δ z Normal Force Constant k n = 3 Et w 3 4l Torsional/Normal Force Constant Ratio k k t n = 4 l 3 cos θ + (1 + ν )sin θ k t = Et 4l 3 w cos θ + l (1 + ν )sin θ
59 Digital Instruments, Inc.
60
61
62
63
64
65 Frictional traces of four SHRP asphalts measured at different cantilever scan rates. Friction Force Response, ξ (volts) AAF-1, k AAK-1, k AAC-1, k 0. AAG-1, k Scan Rate Frequency, ν c (Hz)
66 FRICTION IMAGE OF SHRP ASPHALT AAC-1 50 μm
67 Asphaltene Yield versus Frictional Force Asphaltene Mass Percent, (χ a X 100) Derived from iso-octane asphaltene precipitation Derived from n-heptane asphaltene precipitation Frictional Force Response ξ(@ ν c = 4.0 Hz)
68 1000 AAM-1 Decreasing asphalt friction AAA AAG-1 Film Thickness, h (nm) AAK-1 AAF-1 AAD-1 AAB-1 AAC Spreading Coefficient, S aw (dyne/cm)
69 Aggregate Sliding-Plates: 0-μm X 0-μm (length X width) X 4.0-μm 5% color-contrast scaling of image (AFM TappingMode TM ) Limestone Surface Granite Surface
70 AAB-1 on an RA Granite Plate
71 AAM-1 on an RD Limestone Plate Before and After Sonication in water bath Before After
72 AAD-1 on an RD Limestone Plate Before and After Sonication in water bath Before After
73 AAB-1 on an RA Granite Aggregate After Sonication
Nanotechnology. January 18, Principal Researchers: Troy Pauli, William Grimes, Julie Miller, James Beiswenger.
Nanotechnology Presented by Troy Pauli Prepared for Federal Highway Administration Project Review Contract No. DTFH61-07-D-00005 Fundamental Properties of Asphalts and Modified Asphalts, III Washington,
More informationWetting/Compatibility
Wetting/Compatibility NCHRP Project 9-43; Mix Design Practices for Warm Mix Asphalt Troy Pauli Julie Miller James Beiswenger Will Grimes Janet Wolf PAVEMENT PERFORMANCE PREDICTION SYMPOSIUM 2008 Warm Mix
More informationASPHALT SOLIDIFICATION THEORY
ASPHAL SOLIDIFICAION HEORY roy Pauli, Appy Beemer, and Julie Miller 43 rd Petersen Asphalt Research Conference Pavement Performance Prediction Symposium June 1-3, 005 Laramie, Wyoming Models Used to Predict
More informationExperimental and Theoretical Study of Motion of Drops on Horizontal Solid Surfaces with a Wettability Gradient Nadjoua Moumen
Experimental and Theoretical Study of Motion of Drops on Horizontal Solid Surfaces with a Wettability Gradient Nadjoua Moumen Department of Chemical and Biomolecular Engineering Clarkson University Outline
More informationNano-Rheology/Nano-Mechanics and Scanning Probe Microscope Imaging Based on Novel
Nano-Rheology/Nano-Mechanics and Scanning Probe Microscope Imaging Based on Novel Sample Preparation Techniques Will Grimes, Bill Tuminello, Ryan Boysen, James Beiswenger, Jerry Forney, Niki Ki Kringos,
More informationGeoffrey Rowe, Abatech. 51st Petersen Asphalt Research Conference July 14-16, 2014 Laramie, Wyoming
Geoffrey Rowe, Abatech 51st Petersen Asphalt Research Conference July 14-16, 2014 Laramie, Wyoming 1 Work collected data, BBR DSR Review of Interconversions analysis DSR, use of G* and δ instead of S and
More informationcontact line dynamics
contact line dynamics Jacco Snoeijer Physics of Fluids - University of Twente sliding drops flow near contact line static contact line Ingbrigtsen & Toxvaerd (2007) γ γ sv θ e γ sl molecular scales macroscopic
More informationDLVO interaction between the spheres
DLVO interaction between the spheres DL-interaction energy for two spheres: D w ( x) 64c π ktrϕ e λ DL 2 x λ 2 0 0 D DLVO interaction w ( x) 64πkTRϕ e λ DLVO AR /12x 2 x λd 2 0 D Lecture 11 Contact angle
More informationLecture 7 Contact angle phenomena and wetting
Lecture 7 Contact angle phenomena and Contact angle phenomena and wetting Young s equation Drop on the surface complete spreading Establishing finite contact angle γ cosθ = γ γ L S SL γ S γ > 0 partial
More informationISCST shall not be responsible for statements or opinions contained in papers or printed in its publications.
Modeling of Drop Motion on Solid Surfaces with Wettability Gradients J. B. McLaughlin, Sp. S. Saravanan, N. Moumen, and R. S. Subramanian Department of Chemical Engineering Clarkson University Potsdam,
More informationModelling and analysis for contact angle hysteresis on rough surfaces
Modelling and analysis for contact angle hysteresis on rough surfaces Xianmin Xu Institute of Computational Mathematics, Chinese Academy of Sciences Collaborators: Xiaoping Wang(HKUST) Workshop on Modeling
More informationUse of Polyphosphoric Acid in Asphalt Pavement Performance Prediction WRI/FHA Symposium Cheyenne, WY June 2005
Use of Polyphosphoric Acid in Asphalt Pavement Performance Prediction WRI/FHA Symposium Cheyenne, WY 22-24 June 2005 1 Crude Oil Distillation Cut Points Distillation Range at Atmospheric Pressure Light
More informationMethods of Asphalt Characterization for Understanding the link between Chemistry and Material Failure FHWA Project Review January 26, 2012
Methods of Asphalt Characterization for Understanding the link between Chemistry and Material Failure FHWA Project Review January 26, 2012 Ryan B. Boysen John F. Schabron Eric W. Kalberer Joseph F. Rovani
More informationChemomechanical Approaches to Predict Asphalt Pavement Behavior and Performance
Chemomechanical Approaches to Predict Asphalt Pavement Behavior and Performance Troy Pauli, Western Research Institute Linbing Wang and Wenjuan Sun, Virginia Polytechnic Institute ARC Deliverables/Products
More informationcontact line dynamics
contact line dynamics part 2: hydrodynamics dynamic contact angle? lubrication: Cox-Voinov theory maximum speed for instability corner shape? dimensional analysis: speed U position r viscosity η pressure
More informationContents. Preface XI Symbols and Abbreviations XIII. 1 Introduction 1
V Contents Preface XI Symbols and Abbreviations XIII 1 Introduction 1 2 Van der Waals Forces 5 2.1 Van der Waals Forces Between Molecules 5 2.1.1 Coulomb Interaction 5 2.1.2 Monopole Dipole Interaction
More informationUsing the Bitumen Bond Strength Test & Sessile Drop Method
2011 PAVEMENT PERFORMANCE PREDICTION SYMPOSIUM Selection of Materials for Moisture Resistance HMA Using the Bitumen Bond Strength Test & Sessile Drop Method Hussain Bahia, Raquel Moraes, Raul Velasquez
More informationComplete Wetting of Acrylic Solid Substrate with Silicone Oil at the Center of the Substrate
Complete Wetting of Acrylic Solid Substrate with Silicone Oil at the Center of the Substrate Derrick O. Njobuenwu * Department of Chemical Engineering, Loughborough University Leicestershire LE11 3TU,
More informationP = 1 3 (σ xx + σ yy + σ zz ) = F A. It is created by the bombardment of the surface by molecules of fluid.
CEE 3310 Thermodynamic Properties, Aug. 27, 2010 11 1.4 Review A fluid is a substance that can not support a shear stress. Liquids differ from gasses in that liquids that do not completely fill a container
More informationASSIGNMENT COVER SHEET omicron
ASSIGNMENT COVER SHEET omicron Name Question Done Backpack Ready for test Drill A differentiation Drill B sketches Drill C Partial fractions Drill D integration Drill E differentiation Section A integration
More informationPhysics and Chemistry of Interfaces
Hans Jürgen Butt, Karlheinz Graf, and Michael Kappl Physics and Chemistry of Interfaces Second, Revised and Enlarged Edition WILEY- VCH WILEY-VCH Verlag GmbH & Co. KGaA Contents Preface XI 1 Introduction
More informationFrictional Characteristics of Thrust Bearing in Scroll Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2004 Frictional Characteristics of Thrust Bearing in Scroll Compressor Hajime Sato Mitsubishi
More informationSupplementary table I. Table of contact angles of the different solutions on the surfaces used here. Supplementary Notes
1 Supplementary Figure 1. Sketch of the experimental setup (not to scale) : it consists of a thin mylar sheet (0, 02 4 3cm 3 ) held fixed vertically. The spacing y 0 between the glass plate and the upper
More informationemulsions, and foams March 21 22, 2009
Wetting and adhesion Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting March 21 22, 2009 Salt Lake City Ian Morrison 2009 Ian Morrison 2009 Lecure 2 - Wetting and adhesion
More informationSurface and Interfacial Tensions. Lecture 1
Surface and Interfacial Tensions Lecture 1 Surface tension is a pull Surfaces and Interfaces 1 Thermodynamics for Interfacial Systems Work must be done to increase surface area just as work must be done
More informationHomework of chapter (1) (Solution)
بسم اهلل الرمحن الرحيم The Islamic University of Gaza, Civil Engineering Department, Fluid mechanics-discussion, Instructor: Dr. Khalil M. Al Astal T.A: Eng. Mohammed H El Nazli Eng. Sarah R Rostom First
More informationMicrofluidics 2 Surface tension, contact angle, capillary flow
MT-0.6081 Microfluidics and BioMEMS Microfluidics 2 Surface tension, contact angle, capillary flow 28.1.2017 Ville Jokinen Surface tension & Surface energy Work required to create new surface = surface
More informationCompatibilities of Strategic Highway Research Program Asphalts
TRANSPORTATION RESEARCH RECORD 1 Compatibilities of Strategic Highway Research Program Asphalts J. F. BRANTHAVER, J. c. PETERSEN, J. J. DUVALL, AND P. M. HARNSBERGER The so-called colloidal model of asphalt
More informationChapter 10. Solids and Fluids
Chapter 10 Solids and Fluids Surface Tension Net force on molecule A is zero Pulled equally in all directions Net force on B is not zero No molecules above to act on it Pulled toward the center of the
More informationDerivation of continuum models for the moving contact line problem based on thermodynamic principles. Abstract
Derivation of continuum models for the moving contact line problem based on thermodynamic principles Weiqing Ren Courant Institute of Mathematical Sciences, New York University, New York, NY 002, USA Weinan
More informationResonant Oscillations of Liquid Marbles
Resonant Oscillations of Liquid Marbles Glen McHale*, Stephen J. Elliott*, Michael I. Newton*, Dale L. Herbertson* and Kadir Esmer $ *School of Science & Technology, Nottingham Trent University, UK $ Department
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 informationspreading of drops on soft surfaces
Supplementary Material on Electrically modulated dynamic spreading of drops on soft surfaces Ranabir Dey 1, Ashish Daga 1, Sunando DasGupta 2,3, Suman Chakraborty 1,3 1 Department of Mechanical Engineering,
More informationRole of Binders in Pavement Performance
Role of Binders in Pavement Performance Presented by H. Bahia Research conducted by The University of Wisconsin-Asphalt Group The Pavement Performance Prediction Symposium Western Research Institute, Laramie,
More informationFluid Dynamics for Ocean and Environmental Engineering Homework #2 Viscous Flow
OCEN 678-600 Fluid Dynamics for Ocean and Environmental Engineering Homework #2 Viscous Flow Date distributed : 9.18.2005 Date due : 9.29.2005 at 5:00 pm Return your solution either in class or in my mail
More informationHydrodynamics of wetting phenomena. Jacco Snoeijer PHYSICS OF FLUIDS
Hydrodynamics of wetting phenomena Jacco Snoeijer PHYSICS OF FLUIDS Outline 1. Creeping flow: hydrodynamics at low Reynolds numbers (2 hrs) 2. Thin films and lubrication flows (3 hrs + problem session
More informationOn the Use of Hot-Film Sensors in the Investigation of Fluid Dynamic Phenomena in the Near-Wall Region
UNIVERSITY of LIMERICK OLLSCOIL LUIMNIGH On the Use of Hot-Film Sensors in the Investigation of Fluid Dynamic Phenomena in the Near-Wall Region Philip C. Griffin & Mark R.D. Davies Stokes Research Institute
More informationOn the Landau-Levich Transition
10116 Langmuir 2007, 23, 10116-10122 On the Landau-Levich Transition Maniya Maleki Institute for AdVanced Studies in Basic Sciences (IASBS), Zanjan 45195, P.O. Box 45195-1159, Iran Etienne Reyssat and
More informationDynamic Self Assembly of Magnetic Colloids
Institute of Physics, University of Bayreuth Advanced Practical Course in Physics Dynamic Self Assembly of Magnetic Colloids A. Ray and Th. M. Fischer 3 2012 Contents 1. Abstract 3 2. Introduction 3 3.
More informationarxiv: v2 [physics.flu-dyn] 24 Oct 2013
Supporting Information: Short and long time drop dynamics on lubricated substrates Andreas Carlson1,3,4,, Pilnam Kim2,4, Gustav Amberg3, and Howard A. Stone4, arxiv:1309.6339v2 [physics.flu-dyn] 24 Oct
More informationASPHALT BINDER FLOW ACTIVATION ENERGY AND ITS SIGNIFICANCE FOR COMPACTION EFFORT
ASPHALT BINDER FLOW ACTIVATION ENERGY AND ITS SIGNIFICANCE FOR COMPACTION EFFORT DELMAR SALOMON, HUACHUN ZHAI Idaho Asphalt Supply, Inc. 2627 Brandt Ave., Nampa, ID 83687, USA TEL 208-442-7742, FAX 208-463-0679,
More informationDesign and Modeling of Fluid Power Systems ME 597/ABE Lecture 7
Systems ME 597/ABE 591 - Lecture 7 Dr. Monika Ivantysynova MAHA Professor Fluid Power Systems MAHA Fluid Power Research Center Purdue University Content of 6th lecture The lubricating gap as a basic design
More informationWe may have a general idea that a solid is hard and a fluid is soft. This is not satisfactory from
Chapter 1. Introduction 1.1 Some Characteristics of Fluids We may have a general idea that a solid is hard and a fluid is soft. This is not satisfactory from scientific or engineering point of view. In
More informationEngineering science. Dmitrichenko N. F. D.Sc. in engineering, Prof. National Transport University, Kyiv, Ukraine,
Evaluation technique of oils tribotechnical characteristics on the basis of their rheological and antifriction properties determination under the conditions of rolling motion and rolling with slipping
More informationAN EXPERIMENTAL INVESTIGATION OF FRICTION REDUCTION IN TUBES CAUSED BY HYDROPHOBIC MAGNETITE NANO PARTICLES (HMNP) COATING
ISSN : 0976-2876 (Print) ISSN : 2250-0138 (Online) AN EXPERIMENTAL INVESTIGATION OF FRICTION REDUCTION IN TUBES CAUSED BY HYDROPHOBIC MAGNETITE NANO PARTICLES (HMNP) COATING AMIR JAVAD AHRAR a1 AND MARYAM
More informationGeneral concept and defining characteristics of AFM. Dina Kudasheva Advisor: Prof. Mary K. Cowman
General concept and defining characteristics of AFM Dina Kudasheva Advisor: Prof. Mary K. Cowman Overview Introduction History of the SPM invention Technical Capabilities Principles of operation Examples
More informationHydrodynamic Lubrication
ME 383S Bryant February 15, 2005 1 Hydrodynamic Lubrication Fluid Lubricant: liquid or gas (gas bearing) Mechanism: Pressures separate surfaces o Normal loads on bodies o Convergent profile between surfaces
More informationSliding Bearings. Fig.(1) (a) Full-journal bearing and (b) partial-journal bearing
Sliding Bearings The goal of a bearing is to provide relative positioning and rotational freedom while transmitting a load between two parts, commonly a shaft and its housing. The object of lubrication
More informationMEASUREMENT; SIMPLE HARMONIC MOTION; MOMENT OF INERTIA, SURFACE TENSION; KINETIC THEORY OF GASES AND ACOUSTICS
CHAPTER MEASUREMENT; SIMPLE HARMONIC MOTION; MOMENT OF INERTIA, SURFACE TENSION; KINETIC THEORY OF GASES AND ACOUSTICS. MEASUREMENT. If the wavelength of the green line of the visible spectrum is 546 nm,
More informationBasic Laboratory. Materials Science and Engineering. Atomic Force Microscopy (AFM)
Basic Laboratory Materials Science and Engineering Atomic Force Microscopy (AFM) M108 Stand: 20.10.2015 Aim: Presentation of an application of the AFM for studying surface morphology. Inhalt 1.Introduction...
More informationOn supercooled water drops impacting on superhydrophobic textures
of On supercooled water drops impacting on superhydrophobic textures Tanmoy Maitra, Carlo Antonini, Manish K. Tiwari a, Adrian Mularczyk, Zulkufli Imeri, Philippe Schoch and imos Poulikakos * Laboratory
More informationCHAPTER 1 Fluids and their Properties
FLUID MECHANICS Gaza CHAPTER 1 Fluids and their Properties Dr. Khalil Mahmoud ALASTAL Objectives of this Chapter: Define the nature of a fluid. Show where fluid mechanics concepts are common with those
More information9. Pumps (compressors & turbines) Partly based on Chapter 10 of the De Nevers textbook.
Lecture Notes CHE 31 Fluid Mechanics (Fall 010) 9. Pumps (compressors & turbines) Partly based on Chapter 10 of the De Nevers textbook. Basics (pressure head, efficiency, working point, stability) Pumps
More informationPoly(3-hexylthiophene-2,5-diyl) as a Hole Transport. Layer for Colloidal Quantum Dot Solar Cells
Supporting Information Poly(3-hexylthiophene-2,5-diyl) as a Hole Transport Layer for Colloidal Quantum Dot Solar Cells Darren C. J. Neo 1, Nanlin Zhang 1, Yujiro Tazawa 1, Haibo Jiang 1,2, Gareth M. Hughes
More informationThe lattice Boltzmann method for contact line dynamics
The lattice Boltzmann method for contact line dynamics Sudhir Srivastava, J.H.M. ten Thije Boonkkamp, Federico Toschi April 13, 2011 Overview 1 Problem description 2 Huh and Scriven model 3 Lattice Boltzmann
More informationMoisture Damage Study of Plastomeric Polymer Modified Asphalt Binder Using Functionalized AFM Tips
Moisture Damage Study of Plastomeric Polymer Modified Asphalt Binder Using Functionalized AFM Tips Rafiqul TAREFDER Assistant Professor Department of Civil Engineering, University of New Mexico, Albuquerque,
More informationShell Balances in Fluid Mechanics
Shell Balances in Fluid Mechanics R. Shankar Subramanian Department of Chemical and Biomolecular Engineering Clarkson University When fluid flow occurs in a single direction everywhere in a system, shell
More informationChapter 17. Fundamentals of Atmospheric Modeling
Overhead Slides for Chapter 17 of Fundamentals of Atmospheric Modeling by Mark Z. Jacobson Department of Civil & Environmental Engineering Stanford University Stanford, CA 94305-4020 August 21, 1998 Mass
More informationSupplementary Information. In colloidal drop drying processes, multi-ring depositions are formed due to the stick-slip
Electronic Supplementary Material (ESI for Soft Matter. This journal is The Royal Society of Chemistry 14 Supplementary Information A1. Contact line receding velocity of an evaporating drop In colloidal
More informationThe Mechanics of CMP and Post-CMP Cleaning
The Mechanics of CMP and Post-CMP Cleaning Sinan Müftü Ahmed Busnaina George Adams Department of Mechanical, Industrial and Manuf. Engineering Northeastern University Boston, MA 02115 Introduction Objective
More informationSlurry Seal and Micro Surfacing Systems
Slurry Seal and Micro Surfacing Systems Definition of an emulsion An emulsion is a homogeneous mixture of two immiscible liquids. Immiscible liquids: Liquids that normally don t mix Oil (or, in our case,
More informationStructural and Mechanical Properties of Nanostructures
Master s in nanoscience Nanostructural properties Mechanical properties Structural and Mechanical Properties of Nanostructures Prof. Angel Rubio Dr. Letizia Chiodo Dpto. Fisica de Materiales, Facultad
More informationAdhesive Force due to a Thin Liquid Film between Two Smooth Surfaces (Wringing Mechanism of Gage Blocks)
Journal of JSEM, Vol.14, Special Issue (014) s36-s41 Copyright C 014 JSEM Adhesive Force due to a Thin Liquid Film between Two Smooth Surfaces (Wringing Mechanism of Gage Blocks) Kenji KATOH 1 and Tatsuro
More informationLecture 4. Donnan Potential
Lecture 4 Langmuir-Blodgett films II Langmuir Blodgett films. II. Donnan Potential Floating monolayers Generally, amphiphilic molecules adsorb on the liquid-air interface Insoluble amphiphiles can create
More informationJ. Bico, C. Tordeux and D. Quéré Laboratoire de Physique de la Matière Condensée, URA 792 du CNRS Collège de France Paris Cedex 05, France
EUROPHYSICS LETTERS 15 July 2001 Europhys. Lett., 55 (2), pp. 214 220 (2001) Rough wetting J. Bico, C. Tordeux and D. Quéré Laboratoire de Physique de la Matière Condensée, URA 792 du CNRS Collège de France
More informationA novel fluid-structure interaction model for lubricating gaps of piston machines
Fluid Structure Interaction V 13 A novel fluid-structure interaction model for lubricating gaps of piston machines M. Pelosi & M. Ivantysynova Department of Agricultural and Biological Engineering and
More informationTransport Properties: Momentum Transport, Viscosity
Transport Properties: Momentum Transport, Viscosity 13th February 2011 1 Introduction Much as mass(material) is transported within luids (gases and liquids), linear momentum is also associated with transport,
More informationFRICTION FORCES ON THE LUBRICATED SURFACES IN MICRO AND NANO SCALE
Journal of KONES Powertrain and Transport, Vol. 15, No. 4 28 RICTION ORCES ON THE LUBRICATED SURACES IN MICRO AND NANO SCALE Krzysztof Wierzcholski Maritime University Gdynia Morska Street 81-87, 81-225
More informationdrops in motion Frieder Mugele the physics of electrowetting and its applications Physics of Complex Fluids University of Twente
drops in motion the physics of electrowetting and its applications Frieder Mugele Physics of Complex Fluids niversity of Twente 1 electrowetting: the switch on the wettability voltage outline q q q q q
More informationInterfacial dynamics
Interfacial dynamics Interfacial dynamics = dynamic processes at fluid interfaces upon their deformation Interfacial rheological properties: elasticity, viscosity, yield stress, Relation between macroscopic
More informationMA3D1 Fluid Dynamics Support Class 5 - Shear Flows and Blunt Bodies
MA3D1 Fluid Dynamics Support Class 5 - Shear Flows and Blunt Bodies 13th February 2015 Jorge Lindley email: J.V.M.Lindley@warwick.ac.uk 1 2D Flows - Shear flows Example 1. Flow over an inclined plane A
More informationHEAT TRANSFER BY CONVECTION. Dr. Şaziye Balku 1
HEAT TRANSFER BY CONVECTION Dr. Şaziye Balku 1 CONDUCTION Mechanism of heat transfer through a solid or fluid in the absence any fluid motion. CONVECTION Mechanism of heat transfer through a fluid in the
More informationTitle. Author(s)Nonomura, Makiko; Kobayashi, Ryo; Nishiura, Yasumasa. CitationJournal of the Physics Society Japan, 72(10): Issue Date
Title Periodic Precipitation during Droplet Evaporation on AuthorsNonomura, Makiko; Kobayashi, Ryo; Nishiura, Yasumasa CitationJournal of the Physics Society Japan, 721: 268-2 Issue Date 23-1 Doc URL http://hdl.handle.net/2115/6
More informationSRI LANKAN PHYSICS OLYMPIAD COMPETITION 2008
SRI LANKAN PHYSICS OLYMPIAD COMPETITION 008 Time Allocated : 0 Hours Calculators are not allowed to use. Date of Examination : 1 07 008 Index No. :. Time : 9.30 a.m. - 11.30 a.m. INSTRUCTIONS Answer all
More informationROLLING FRICTION TORQUE IN MICROSYSTEMS
Proceedings of VAREHD 15, Suceava, May 6-8, 010 170 ROLLING FRICTION TORQUE IN MICROSYSTEMS D. N. Olaru, C. Stamate, A. Dumitrascu, Gh. Prisacaru Department of Machine Elements and Mechatronics,Technical
More informationA SHORT INTRODUCTION TO TWO-PHASE FLOWS Two-phase flows balance equations
A SHORT INTRODUCTION TO TWO-PHASE FLOWS Two-phase flows balance equations Hervé Lemonnier DM2S/STMF/LIEFT, CEA/Grenoble, 38054 Grenoble Cedex 9 Ph. +33(0)4 38 78 45 40 herve.lemonnier@cea.fr, herve.lemonnier.sci.free.fr/tpf/tpf.htm
More informationCOMPARISON OF WETTABILITY AND CAPILLARY EFFECT EVALUATED BY DIFFERENT CHARACTERIZING METHODS
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS COMPARISON OF WETTABILITY AND CAPILLARY EFFECT EVALUATED BY DIFFERENT CHARACTERIZING METHODS S.K. Wang*, M. Li*, Y.Z. Gu, Y.X. Li and Z.G. Zhang Key
More informationCapillarity and Wetting Phenomena
? Pierre-Gilles de Gennes Frangoise Brochard-Wyart David Quere Capillarity and Wetting Phenomena Drops, Bubbles, Pearls, Waves Translated by Axel Reisinger With 177 Figures Springer Springer New York Berlin
More informationImpact of Healing. Self healing in bituminous materials. Lab. Field. log N ,845
Impact of Healing Self healing in bituminous materials N 18.3 C E* f 3.291 0,845 t 0? Lab. Field log N Healing Mechanism Step 1: Interfacial Wetting Step 2: Intrinsic healing d t, X dt a b = fn (healing
More informationInvestigation of energy dissipation due to contact angle hysteresis in capillary effect
Journal of Physics: Conference Series PAPER OPEN ACCESS Investigation of energy dissipation due to contact angle hysteresis in capillary effect To cite this article: Bhagya Athukorallage and Ram Iyer 216
More informationSimulation of T-junction using LBM and VOF ENERGY 224 Final Project Yifan Wang,
Simulation of T-junction using LBM and VOF ENERGY 224 Final Project Yifan Wang, yfwang09@stanford.edu 1. Problem setting In this project, we present a benchmark simulation for segmented flows, which contain
More informationChemical and Mechanical Mechanisms of Moisture Damage in Hot Mix Asphalt Pavements
Chemical and Mechanical Mechanisms of Moisture Damage in Hot Mix Asphalt Pavements Dallas N. Little Texas A&M University David R. Jones Owens Corning Moisture Damage Loss of strength and durability due
More informationSupplementary information
1 2 Supplementary information 3 4 5 6 Supplementary Figure 1 7 8 Supplementary Figure 1 ǀ Characterization of the lysozyme fibrils by atomic force microscopy 9 (AFM) and scanning electron microscopy (SEM).
More informationScanning Probe Microscopy (SPM)
Scanning Probe Microscopy (SPM) Scanning Tunneling Microscopy (STM) --- G. Binnig, H. Rohrer et al, (1982) Near-Field Scanning Optical Microscopy (NSOM) --- D. W. Pohl (1982) Atomic Force Microscopy (AFM)
More informationand in each case give the range of values of x for which the expansion is valid.
α β γ δ ε ζ η θ ι κ λ µ ν ξ ο π ρ σ τ υ ϕ χ ψ ω Mathematics is indeed dangerous in that it absorbs students to such a degree that it dulls their senses to everything else P Kraft Further Maths A (MFPD)
More informationSound Pressure Generated by a Bubble
Sound Pressure Generated by a Bubble Adrian Secord Dept. of Computer Science University of British Columbia ajsecord@cs.ubc.ca October 22, 2001 This report summarises the analytical expression for the
More informationSurface Tension and its measurements
Surface Tension and its measurements Surface Tension Surface tension is a fundamental property by which the gas liquid interfaces are characterized. The zone between a gaseous phase and a liquid phase
More informationFrieder Mugele. Physics of Complex Fluids. University of Twente. Jacco Snoeier Physics of Fluids / UT
coorganizers: Frieder Mugele Physics of Comple Fluids Jacco Snoeier Physics of Fluids / UT University of Twente Anton Darhuber Mesoscopic Transport Phenomena / Tu/e speakers: José Bico (ESPCI Paris) Daniel
More informationMEGASONIC CLEANING OF WAFERS IN ELECTROLYTE SOLUTIONS: POSSIBLE ROLE OF ELECTRO-ACOUSTIC AND CAVITATION EFFECTS. The University of Arizona, Tucson
MEGASONIC CLEANING OF WAFERS IN ELECTROLYTE SOLUTIONS: POSSIBLE ROLE OF ELECTRO-ACOUSTIC AND CAVITATION EFFECTS Manish Keswani 1, Srini Raghavan 1, Pierre Deymier 1 and Steven Verhaverbeke 2 1 The University
More informationCandidates must show on each answer book the type of calculator used. Log Tables, Statistical Tables and Graph Paper are available on request.
UNIVERSITY OF EAST ANGLIA School of Mathematics Spring Semester Examination 2004 FLUID DYNAMICS Time allowed: 3 hours Attempt Question 1 and FOUR other questions. Candidates must show on each answer book
More informationthermo-viscoelasticity using
thermo-viscoelasticity Chair of Computational Mechanics University of Siegen Chair of Applied Mechanics and Dynamics Chemnitz University of Technology ECCOMAS, 13.9.1 1 Thermoviscoelastic continuum framework
More informationGeneration of magnetic fields by large-scale vortices in rotating convection
Generation of magnetic fields by large-scale vortices in rotating convection Céline Guervilly, David Hughes & Chris Jones School of Mathematics, University of Leeds, UK Generation of the geomagnetic field
More informationChapter 12. Nanometrology. Oxford University Press All rights reserved.
Chapter 12 Nanometrology Introduction Nanometrology is the science of measurement at the nanoscale level. Figure illustrates where nanoscale stands in relation to a meter and sub divisions of meter. Nanometrology
More informationMiddle East Technical University Department of Mechanical Engineering ME 305 Fluid Mechanics I Fall 2018 Section 4 (Dr.
Reading Assignments Middle East Technical University Department of Mechanical Engineering ME 305 Fluid Mechanics I Fall 2018 Section 4 (Dr. Sert) Study Set 1 You can find the answers of some of the following
More informationChapter 10. Nanometrology. Oxford University Press All rights reserved.
Chapter 10 Nanometrology Oxford University Press 2013. All rights reserved. 1 Introduction Nanometrology is the science of measurement at the nanoscale level. Figure illustrates where nanoscale stands
More informationGeometrical optimization of half toroidal continuously variable transmission using particle swarm optimization
Scientia Iranica B (2011) 18 (5), 1126 1132 Sharif University of Technology Scientia Iranica Transactions B: Mechanical Engineering www.sciencedirect.com Geometrical optimization of half toroidal continuously
More informationConvective Mass Transfer
Convective Mass Transfer Definition of convective mass transfer: The transport of material between a boundary surface and a moving fluid or between two immiscible moving fluids separated by a mobile interface
More information. α β γ δ ε ζ η θ ι κ λ μ Aμ ν(x) ξ ο π ρ ς σ τ υ φ χ ψ ω. Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω. Friday April 1 ± ǁ
. α β γ δ ε ζ η θ ι κ λ μ Aμ ν(x) ξ ο π ρ ς σ τ υ φ χ ψ ω. Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω Friday April 1 ± ǁ 1 Chapter 5. Photons: Covariant Theory 5.1. The classical fields 5.2. Covariant
More informationWetting contact angle
Wetting contact angle Minh Do-Quang www.flow.kth.se Outline Statics; capillarity and wetting Dynamics; models describing dynamic wetting Hydrodynamics (Tanner-Cox-Voinov law) Molecular kinetics theory
More informationdewetting driving forces dewetting mechanism? dewetting dynamics? final equilibrium state: drops with θ = θ Y
dewetting initial state: continuous film of partially wetting liquid final equilibrium state: drops wit θ = θ Y driving forces dewetting mecanism? dewetting dynamics? 1 free energy vs. film tickness water
More information