Tutorial: Premixed Flow in a Conical Chamber using the Finite-Rate Chemistry Model
|
|
- Christopher Jonah Blake
- 5 years ago
- Views:
Transcription
1 Tutorial: Premixed Flow in a Conical Chamber using the Finite-Rate Chemistry Model Introduction The purpose of this tutorial is to provide guidelines and recommendations for setting up and solving the combustion of a lean, premixed gaseous fuel mixture of methane and air in a conical reactor. Combustion is modeled using the finite-rate chemistry model in ANSYS Fluent. This tutorial demonstrates how to do the following: Set up and solve the combustion problem of a premixed gaseous fuel mixture of methane and air in a conical reactor. Use the species transport model with finite-rate chemistry. Set up and solve the case with appropriate solver settings. Postprocess the resulting data. Prerequisites This tutorial is written with the assumption that you have completed Tutorial 1 from ANSYS Fluent 14.5 Tutorial Guide, and that you are familiar with the ANSYS Fluent navigation pane and menu structure. Some steps in the setup and solution procedure will not be shown explicitly. This tutorial uses the species transport model with finite-rate chemistry and volumetric reactions. A basic understanding of the combustion processes is desirable. For more information on species transport and finite-rate chemistry relating to volumetric reactions, see Section 15.1 Volumetric Reactions in the ANSYS Fluent 14.5 User s Guide. Problem Description The conical combustor considered is shown in Figure 1. A small nozzle at the center of the combustor introduces the lean methane-air mixture (equivalence ratio = 0.6) at 60 m/s and 650 K. Combustion involves several complex reactions between CH 4, O 2, CO 2, CO, H 2 O, and N 2. The high-speed flow reverses direction in the combustor and exits through the co-axial outlet. c Fluent Inc. January 28,
2 Figure 1: Schematic Figure Setup and Solution Preparation 1. Copy the file (conreac.msh) to your working folder. 2. Use FLUENT Launcher to start the 2D version of ANSYS Fluent. 3. Enable Double-Precision in the Options list. Step 1: Mesh 1. Read the mesh file (conreac.msh). File Read Mesh... As the mesh file is read, ANSYS Fluent will report the progress in the console. Step 2: General Settings 1. Define the solver settings. General Axisymmetric (a) Select Axisymmetric from the 2D Space list. 2 c ANSYS, Inc. January 28, 2013
3 2. Check the mesh (see Figure 2). General Check Figure 2: Mesh Display ANSYS Fluent will perform various checks on the mesh and will report the progress in the console. Make sure the minimum volume reported is a positive number. Step 3: Models 1. Enable the Energy Equation. Models Energy Edit Define the k-epsilon turbulence model. Models Viscous Edit... (a) Select k-epsilon in the Model list to open Viscous Model dialog box. (b) Retain the default settings and click OK to close Viscous Model dialog box. c ANSYS, Inc. January 28,
4 3. Define the species model. Models Species Edit... (a) Select Species Transport from the Model list to open Species Model dialog box. i. Enable Volumetric from the Reactions group box. ii. Select methane-air-2step from the Mixture Material drop-down list. iii. Select Finite-Rate/Eddy Dissipation from the Turbulence-Chemistry Interaction group box. iv. Click OK to close the Species Model dialog box. An Information dialog box will appear informing that the material properties are changed. Click OK. 4 c ANSYS, Inc. January 28, 2013
5 Step 4: Materials Materials Fluid Create/Edit Copy nitrogen-oxide (no) from the database. (a) Click the Fluent Database... to open the Fluent Database Materials dialog box. i. Select fluid from the Material Type drop-down list. ii. Select nitrogen-oxide (no) from the Fluent Fluid Materials list. iii. Click Copy and close the Fluent Database Materials dialog box. iv. Click Change/Create and close the Create/Edit Materials dialog box. 2. Modify the mixture material, methane-air-2step. Materials Mixture Create/Edit... (a) Enter for Thermal Conductivity in the Properties group box. (b) Click the Edit... to the right of the Mixture Species to open the Species dialog box. i. Add nitrogen-oxide (no) to the Selected Species list. ii. Reorder the species so that nitrogen (n2) appears last in the Selected Species selection list. c ANSYS, Inc. January 28,
6 iii. Click OK to close the Species dialog box. (c) Specify the reactions in the Reactions dialog box. i. Click the Edit... to the right of the Reaction to open the Reactions dialog box. A. Increase the Total Number of Reactions to 5. B. Define the reactions as shown in the following table: where, PEF = Pre-Exponential Factor AE = Activation Energy TE = Temperature Exponent 6 c ANSYS, Inc. January 28, 2013
7 Reaction ID Number of Reactants Species ch4, o2 co, o2 co2 n2, o2, co n2, o2 Stoich. ch4 = 1 co = 1 co2 = 1 n2 = 1 n2 = 1 Coefficient o2 = 1.5 o2 = 0.5 o2 = 1 o2 = 1 co = 0 Rate ch4 = 1.46 co = co2 = 1 n2 = 0 n2 = 1 Exponent o2 = o2 = 1.57 o2 = o2 = 0.5 co = Arrhenius PEF=1.6596e+15 PEF=7.9799e+14 PEF=2.2336e+14 PEF=8.8308e+23 PEF=9.2683e+14 Rate AE=1.72e+08 AE=9.654e+07 AE=5.1774e+08 AE=4.4366e+08 AE=5.7276e+08 TE = 0.5 Number of Products Species co, h2o co2 co, o2 no, co no Stoich. co = 1 co2 = 1 co = 1 no = 2 no = 2 Coefficient h2o = 2 o2 = 0.5 co = 0 Rate co = 0 co2 = 0 co = 0 no = 0 no = 0 Exponent h2o = 0 o2 = 0 co = 0 Mixing default default default A = 1e+11 A = 1e+11 Rate values values values B = 1e+11 B = 1e+11 ii. Click OK to close the Reactions dialog box. (d) Click the Edit... to the right of the Mechanism to open the Reaction Mechanisms dialog box. i. Select all the reactions from the Reactions list. ii. Click OK to close the Reaction Mechanisms dialog box. (e) Ensure that mixing law is selected from the Cp (Specific Heat) drop-down list for mixture. (f) Ensure that piecewise-polynomial is selected from the Cp (Specific Heat) dropdown list for all the species. 3. Click Change/Create and close the Create/Edit Materials dialog box. c ANSYS, Inc. January 28,
8 Step 5: Boundary Conditions Boundary Conditions 1. Set the boundary conditions for pressure-outlet-4. Boundary Conditions pressure-outlet-4 Edit... (a) Enter the values as shown in the following table: Parameters Values Specification Method Intensity and Length Scale Backflow Turbulent Intensity 10 % Backflow Turbulent Length Scale m Backflow Total Temperature 2500 K Species Mass Fractions o2 = 0.05, co2 = 0.1, and h2o = 0.1 (b) Click OK to close the Pressure Outlet dialog box. 2. Set the boundary conditions for velocity-inlet-5. Boundary Conditions velocity-inlet-5 Edit... (a) Enter the values as shown in the table: Parameters Values Velocity Magnitude 60 m/s Specification Method Intensity and Length Scale Turbulent Intensity 10 % Turbulent Length Scale m Temperature 650 K Species Mass Fractions ch4 = o2 = (b) Click OK to close the Velocity Inlet dialog box. 3. Retain the default boundary conditions for wall-1. 8 c ANSYS, Inc. January 28, 2013
9 Step 6: Solution 1. Modify the species model. Models Species Edit... (a) Disable Volumetric from the Reactions list. (b) Click OK to close the Species Model dialog box. This is a non-reacting simulation. It is good practice to solve for flow and mixing reactions (species transport) and then enable the reactions. 2. Set the under-relaxation factors. Solution Controls (a) Enter 0.95 for all the species and for Energy in the Under-Relaxation Factors group box. 3. Initialize the solution. Solution Initialization Hybrid Initialization is the default Initialization Method in ANSYS Fluent Refer to the section Hybrid Initialization, in the ANSYS Fluent 14.5 User s Guide. c ANSYS, Inc. January 28,
10 (a) Click More Settings... i. In the Species Settings tab enable Specify Species Parameters. ii. Enter 0.01 for all Species Fraction. iii. Click OK and close the Hybrid Initialization dialog box. (b) Click Initialize. 4. Save the case file (5step cold.cas.gz). File Write Case Solve for 200 iterations (see Figure 3). Run Calculation Calculate 10 c ANSYS, Inc. January 28, 2013
11 Figure 3: Scaled Residuals 6. Save the data file (5step cold.dat.gz). File Write Data... Step 7: Postprocessing 1. Display the velocity vectors in the domain (see Figure 4). Graphics and Animations Vectors Set Up... (a) Enter 10 for Scale and click Display. (b) Close the Vectors dialog box. Figure 4: Velocity Vectors c ANSYS, Inc. January 28,
12 2. Display contours of stream function (see Figure 5). Graphics and Animations Contours Set Up... (a) Select Velocity... and Stream Function from the Contours of drop-down lists and click Display. (b) Close the Contours dialog box. Figure 5: Contours of Stream Function Step 8: Reacting Flow Case Setup 1. Enable volumetric reactions. Models Species Edit... (a) Enable Volumetric from the Reactions list. (b) Click OK to close the Species Model dialog box. 2. Patch an initial temperature field to initiate the combustion process. Solution Initialization Patch... (a) Select Temperature from the Variable list. (b) Enter 1000 for Value. (c) Select fluid-6 from the Zones to Patch list. (d) Click Patch. (e) Close the Patch dialog box. 3. Save the case file (5step final.cas.gz). File Write Case c ANSYS, Inc. January 28, 2013
13 4. Solve for an additional 1000 iterations (see Figure 6). Run Calculation Calculate Figure 6: Scaled Residuals After 1000 Iterations 5. Save the data file (5step final.dat.gz). File Write Data Compute the gas phase mass fluxes through all the boundaries. Reports Fluxes Set Up... (a) Calculate the Mass Flow Rate with velocity-inlet-5 as boundary. i. Select velocity-inlet-5 from the Boundaries list. ii. Click Compute. (b) Calculate Mass Flow Rate with pressure-outlet-4 as boundary. i. Select Pressure-outlet-4 from the Boundaries list. ii. Click Compute. Both these figures should be equal and opposite in sign to each other. 7. Compute the gas phase energy fluxes through all the boundaries. Reports Fluxes Set Up... (a) Select Total Heat Transfer Rate from the Options list. (b) Select all the zones from the Boundaries list and click Compute. (c) Close the Flux Reports dialog box. c ANSYS, Inc. January 28,
14 Step 9: Postprocessing 1. Display velocity vectors in the domain with a scale factor of 10 (see Figure 7). Figure 7: Velocity Vectors 2. Display contours of stream function (see Figure 8). Figure 8: Contours of Stream Function 14 c ANSYS, Inc. January 28, 2013
15 3. Display filled contours of static temperature (see Figure 9). Figure 9: Contours of Static Temperature 4. Display contours of species mass fractions of ch4 (see Figure 10). Figure 10: Contours of Mass Fraction of CH 4 c ANSYS, Inc. January 28,
16 5. Display contours of species mass fractions of co2 (see Figure 11). Figure 11: Contours of Mass Fraction of CO 2 6. Display contours of species mass fractions of co (see Figure 12). Figure 12: Contours of Mass Fraction of CO 16 c ANSYS, Inc. January 28, 2013
17 7. Display contours of species mass fractions of h2o (see Figure 13). Figure 13: Contours of Mass Fraction of H 2 O 8. Display contours of species mass fractions of no (see Figure 14). Figure 14: Contours of Mass Fraction of NO c ANSYS, Inc. January 28,
18 9. Display contours of species mass fractions of o2 (see Figure 15). Figure 15: Contours of Mass Fraction of O 2 Results The finite-rate chemistry model in ANSYS Fluent can be used to predict the temperature field and species mass fractions. Summary Application of the finite-rate chemistry model using a 5-step global chemical reaction mechanism has been demonstrated. The 5-step global mechanism by Nicol [1] for methane oxidation and NO formation is tuned specifically for lean, premixed combustion applications. The mechanism is valid for a pressure of 1 Atm, inlet temperature of 650 K, and a fuel-air equivalence ratio range of 0.45 to Quantities presented below are in units of kmoles, cubic meters, seconds, and Kelvin. 1. CH O 2 CO + 2H 2 O R 1 = [CH 4 ] 1.46 [O 2 ] exp( 20643/T ) 2. CO + 0.5O 2 CO 2 R 2 = [CO] [O 2 ] 1.57 exp( 11613/T ) 18 c ANSYS, Inc. January 28, 2013
19 3. CO 2 CO + 0.5O 2 R 3 = [CO 2 v]exp( 62281/T ) 4. N 2 + O 2 2NO R 4 = [CO] [O 2 ] exp( 53369/T ) 5. N 2 + O 2 2NO R 5 = T 0.5 [N 2 ][O 2 ] 0.5 exp( 68899/T ) References [1] Nicol, D.G. A Chemical and Numerical Study of NO x and Pollutant Formation in Low-Emissions Combustion, Ph.D. Dissertation, University of Washington (1995). c ANSYS, Inc. January 28,
Tutorial 11. Use of User-Defined Scalars and User-Defined Memories for Modeling Ohmic Heating
Tutorial 11. Use of User-Defined Scalars and User-Defined Memories for Modeling Ohmic Heating Introduction The purpose of this tutorial is to illustrate the use of user-defined scalars (UDS) and user defined
More informationChapter 13. Modeling Species Transport and Finite-Rate Chemistry
Chapter 13. Modeling Species Transport and Finite-Rate Chemistry FLUENT can model the mixing and transport of chemical species by solving conservation equations describing convection, diffusion, and reaction
More informationSection 26.1: Reporting Conventions. Section 26.2: Fluxes Through Boundaries. Section 26.3: Forces on Boundaries
Chapter 26. Alphanumeric Reporting FLUENT provides tools for computing and reporting integral quantities at surfaces and boundaries. These tools enable you to find the mass flow rate and heat transfer
More informationAthena Visual Software, Inc. 1
Athena Visual Studio Visual Kinetics Tutorial VisualKinetics is an integrated tool within the Athena Visual Studio software environment, which allows scientists and engineers to simulate the dynamic behavior
More informationDimerization in a Tubular Reactor
Dimerization in a Tubular Reactor Tubular reactors are very common in large-scale continuous, for example in the petroleum industry. One key design and optimization parameter is the conversion, that is
More informationTaylor Dispersion Created by Robert P. Hesketh, Chemical Engineering, Rowan University Fall 2005
Taylor Dispersion Created by Robert P. Hesketh, Chemical Engineering, Rowan University Fall 005 In this problem you will simulate a tubular reactor with fluid flowing in laminar flow. The governing equations
More informationA NUMERICAL ANALYSIS OF COMBUSTION PROCESS IN AN AXISYMMETRIC COMBUSTION CHAMBER
SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE-AFASES 2016 A NUMERICAL ANALYSIS OF COMBUSTION PROCESS IN AN AXISYMMETRIC COMBUSTION CHAMBER Alexandru DUMITRACHE*, Florin FRUNZULICA ** *Institute of
More informationExpress Introductory Training in ANSYS Fluent Lecture 2 Boundary Conditions & Solver Settings
Express Introductory Training in ANSYS Fluent Lecture 2 Boundary Conditions & Solver Settings Dimitrios Sofialidis Technical Manager, SimTec Ltd. Mechanical Engineer, PhD PRACE Autumn School 2013 - Industry
More informationMultiphysics Modeling
11 Multiphysics Modeling This chapter covers the use of FEMLAB for multiphysics modeling and coupled-field analyses. It first describes the various ways of building multiphysics models. Then a step-by-step
More informationElectromagnetic Forces on Parallel Current-
Page 1 of 5 Tutorial Models : Electromagnetic Forces on Parallel Current-Carrying Wires Electromagnetic Forces on Parallel Current- Carrying Wires Introduction One ampere is defined as the constant current
More informationExample Resistive Heating
Example Resistive Heating SOLVED WITH COMSOL MULTIPHYSICS 3.5a COPYRIGHT 2008. All right reserved. No part of this documentation may be photocopied or reproduced in any form without prior written consent
More informationNO x Emissions Prediction from a Turbulent Diffusion Flame
NO x Emissions Prediction from a Turbulent Diffusion Flame Akpan, Patrick 1 and Njiofor, Tobenna 2 1 Department of Mechanical Engineering, University of Nigeria, Nsukka 2 Process Systems Engineering, Cranfield
More informationThe OptiSage module. Use the OptiSage module for the assessment of Gibbs energy data. Table of contents
The module Use the module for the assessment of Gibbs energy data. Various types of experimental data can be utilized in order to generate optimized parameters for the Gibbs energies of stoichiometric
More informationTOPICAL PROBLEMS OF FLUID MECHANICS 97
TOPICAL PROBLEMS OF FLUID MECHANICS 97 DOI: http://dx.doi.org/10.14311/tpfm.2016.014 DESIGN OF COMBUSTION CHAMBER FOR FLAME FRONT VISUALISATION AND FIRST NUMERICAL SIMULATION J. Kouba, J. Novotný, J. Nožička
More informationBest Practice Guidelines for Combustion Modeling. Raphael David A. Bacchi, ESSS
Best Practice Guidelines for Combustion Modeling Raphael David A. Bacchi, ESSS PRESENTATION TOPICS Introduction; Combustion Phenomenology; Combustion Modeling; Reaction Mechanism; Radiation; Case Studies;
More informationEsterification in a PFR with Aspen Plus V8.0
Esterification in a PFR with Aspen Plus V8.0 1. Lesson Objectives Use Aspen Plus to determine whether a given reaction is technically feasible using a plug flow reactor. 2. Prerequisites Aspen Plus V8.0
More informationHeat Transfer Modeling
Heat Transfer Modeling Introductory FLUENT Training 2006 ANSYS, Inc. All rights reserved. 2006 ANSYS, Inc. All rights reserved. 7-2 Outline Energy Equation Wall Boundary Conditions Conjugate Heat Transfer
More informationEsterification in CSTRs in Series with Aspen Plus V8.0
Esterification in CSTRs in Series with Aspen Plus V8.0 1. Lesson Objectives Use Aspen Plus to determine whether a given reaction is technically feasible using three continuous stirred tank reactors in
More informationVirtual Cell Membrane Potential Tutorial IV
Virtual Cell Membrane Potential Tutorial IV Creating the BioModel Creating the Application!" Application I -Studying voltage changes in a compartmental model!" Application II - Studying voltage, sodium,
More informationGetting started with BatchReactor Example : Simulation of the Chlorotoluene chlorination
Getting started with BatchReactor Example : Simulation of the Chlorotoluene chlorination 2011 ProSim S.A. All rights reserved. Introduction This document presents the different steps to follow in order
More informationOverview of Turbulent Reacting Flows
Overview of Turbulent Reacting Flows Outline Various Applications Overview of available reacting flow models LES Latest additions Example Cases Summary Reacting Flows Applications in STAR-CCM+ Ever-Expanding
More informationAutomatic Watershed Delineation using ArcSWAT/Arc GIS
Automatic Watershed Delineation using ArcSWAT/Arc GIS By: - Endager G. and Yalelet.F 1. Watershed Delineation This tool allows the user to delineate sub watersheds based on an automatic procedure using
More informationPreparations and Starting the program
Preparations and Starting the program https://oldwww.abo.fi/fakultet/ookforskning 1) Create a working directory on your computer for your Chemkin work, and 2) download kinetic mechanism files AAUmech.inp
More informationProject #1 Internal flow with thermal convection
Project #1 Internal flow with thermal convection MAE 494/598, Fall 2017, Project 1 (20 points) Hard copy of report is due at the start of class on the due date. The rules on collaboration will be released
More informationDEVELOPMENT OF CFD MODEL FOR A SWIRL STABILIZED SPRAY COMBUSTOR
DRAFT Proceedings of ASME IMECE: International Mechanical Engineering Conference & Exposition Chicago, Illinois Nov. 5-10, 2006 IMECE2006-14867 DEVELOPMENT OF CFD MODEL FOR A SWIRL STABILIZED SPRAY COMBUSTOR
More informationApplied CFD Project 1. Christopher Light MAE 598
Applied CFD Project 1 Christopher Light MAE 598 October 5, 2017 Task 1 The hot water tank shown in Fig 1 is used for analysis of cool water flow with the heat from a hot plate at the bottom. For all tasks,
More informationADVANCED DES SIMULATIONS OF OXY-GAS BURNER LOCATED INTO MODEL OF REAL MELTING CHAMBER
ADVANCED DES SIMULATIONS OF OXY-GAS BURNER LOCATED INTO MODEL OF REAL MELTING CHAMBER Ing. Vojtech Betak Ph.D. Aerospace Research and Test Establishment Department of Engines Prague, Czech Republic Abstract
More informationTutorial 12 Excess Pore Pressure (B-bar method) Undrained loading (B-bar method) Initial pore pressure Excess pore pressure
Tutorial 12 Excess Pore Pressure (B-bar method) Undrained loading (B-bar method) Initial pore pressure Excess pore pressure Introduction This tutorial will demonstrate the Excess Pore Pressure (Undrained
More informationHeat Transfer Modeling using ANSYS FLUENT
Lecture 2 - Conduction Heat Transfer 14.5 Release Heat Transfer Modeling using ANSYS FLUENT 2013 ANSYS, Inc. March 28, 2013 1 Release 14.5 Agenda Introduction Energy equation in solids Equation solved
More informationReactive Flows using TransAT. June 2013 Jan van Rickenbach, Daniel Rakotonirina ASCOMP
Reactive Flows using TransAT June 2013 Jan van Rickenbach, Daniel Rakotonirina ASCOMP www.ascomp.ch jan@ascomp.ch Model portfolio Reactive flows Infinitely Fast Chemistry (non-premixed) EDC EDC-SDT (Scalar
More informationInternational Journal of Scientific & Engineering Research, Volume 5, Issue 7, July-2014 ISSN
ISSN 2229-5518 815 Effectof Radiation on the Performance ofa SupersonicCombustor Goutham S M R Rajkumar Department M of Tech, Mechanical Mechanical Engineering Engineering Department Department of Mechanical
More informationStoichiometric Reactor Simulation Robert P. Hesketh and Concetta LaMarca Chemical Engineering, Rowan University (Revised 4/8/09)
Stoichiometric Reactor Simulation Robert P. Hesketh and Concetta LaMarca Chemical Engineering, Rowan University (Revised 4/8/09) In this session you will learn how to create a stoichiometric reactor model
More informationAmmonia Synthesis with Aspen Plus V8.0
Ammonia Synthesis with Aspen Plus V8.0 Part 1 Open Loop Simulation of Ammonia Synthesis 1. Lesson Objectives Become comfortable and familiar with the Aspen Plus graphical user interface Explore Aspen Plus
More informationTutorial for the supercritical pressure pipe with STAR-CCM+
Tutorial for the supercritical pressure pipe with STAR-CCM+ For performing this tutorial, it is necessary to have already studied the tutorial on the upward bend. In fact, after getting abilities with
More informationANSYS Advanced Solutions for Gas Turbine Combustion. Gilles Eggenspieler 2011 ANSYS, Inc.
ANSYS Advanced Solutions for Gas Turbine Combustion Gilles Eggenspieler ANSYS, Inc. 1 Agenda Steady State: New and Existing Capabilities Reduced Order Combustion Models Finite-Rate Chemistry Models Chemistry
More informationMass Transfer in a Stirred Batch Reactor
Mass Transfer in a Stirred Batch Reactor In many processes, efficient reactor usage goes hand in hand with efficient mixing. The ability to accurately examine the effects of impeller placement, speed,
More information1. Starting of a project and entering of basic initial data.
PROGRAM VISIMIX TURBULENT SV. Example 1. Contents. 1. Starting of a project and entering of basic initial data. 1.1. Opening a Project. 1.2. Entering dimensions of the tank. 1.3. Entering baffles. 1.4.
More informationWatershed Modeling Orange County Hydrology Using GIS Data
v. 10.0 WMS 10.0 Tutorial Watershed Modeling Orange County Hydrology Using GIS Data Learn how to delineate sub-basins and compute soil losses for Orange County (California) hydrologic modeling Objectives
More informationA comparison between two different Flamelet reduced order manifolds for non-premixed turbulent flames
8 th U. S. National Combustion Meeting Organized by the Western States Section of the Combustion Institute and hosted by the University of Utah May 19-22, 2013 A comparison between two different Flamelet
More informationCFD study of gas mixing efficiency and comparisons with experimental data
17 th European Symposium on Computer Aided Process Engineering ESCAPE17 V. Plesu and P.S. Agachi (Editors) 2007 Elsevier B.V. All rights reserved. 1 CFD study of gas mixing efficiency and comparisons with
More informationReduced Mechanism Approach of Modeling Premixed Propane-Air Mixture Using ANSYS Fluent
Reduced Mechanism Approach of Modeling Premixed Propane-Air Mixture Using ANSYS Fluent Lucky Anetor 1,*, Edward Osakue 2, and Christopher Odetunde 3 1 Department of Mechanical Engineering, Nigerian Defence
More informationNumerical Investigation of Ignition Delay in Methane-Air Mixtures using Conditional Moment Closure
21 st ICDERS July 23-27, 27 Poitiers, France Numerical Investigation of Ignition Delay in Methane-Air Mixtures using Conditional Moment Closure Ahmad S. El Sayed, Cécile B. Devaud Department of Mechanical
More informationCFD ANALYSIS OF CONVERGENT-DIVERGENT NOZZLE
1. G. SATYANARAYANA,. Ch. VARUN, 3. S.S. NAIDU CFD ANALYSIS OF CONVERGENT-DIVERGENT NOZZLE 1-3. DEPARTMENT OF MECHANICAL ENGINEERING, MVGRCE, VIZIANAGARAM, 535005, (A.P.), INDIA ABSTRACT: CFD is a branch
More informationBoat Reactor for Low Pressure Chemical Vapor Deposition
Boat Reactor for Low Pressure Chemical Vapor Deposition Introduction Chemical vapor deposition (CVD) is an important step in the process of manufacturing microchips. A common application is the deposition
More informationCoupling Physics. Tomasz Stelmach Senior Application Engineer
Coupling Physics Tomasz Stelmach Senior Application Engineer Agenda Brief look @ Multiphysics solution What is new in R18 Fluent Maxwell coupling wireless power transfer Brief look @ ANSYS Multiphysics
More informationMAE 598 Project #1 Jeremiah Dwight
MAE 598 Project #1 Jeremiah Dwight OVERVIEW A simple hot water tank, illustrated in Figures 1 through 3 below, consists of a main cylindrical tank and two small side pipes for the inlet and outlet. All
More informationVCell Tutorial. Building a Rule-Based Model
VCell Tutorial Building a Rule-Based Model We will demonstrate how to create a rule-based model of EGFR receptor interaction with two adapter proteins Grb2 and Shc. A Receptor-monomer reversibly binds
More informationMotor-CAD combined electromagnetic and thermal model (January 2015)
Motor-CAD combined electromagnetic and thermal model (January 2015) Description The Motor-CAD allows the machine performance, losses and temperatures to be calculated for a BPM machine. In this tutorial
More informationCombustion. Indian Institute of Science Bangalore
Combustion Indian Institute of Science Bangalore Combustion Applies to a large variety of natural and artificial processes Source of energy for most of the applications today Involves exothermic chemical
More informationExploring STAR-CCM+ Capabilities, Enhancements and Practices for Aerospace Combustion. Niveditha Krishnamoorthy CD-adapco
Exploring STAR-CCM+ Capabilities, Enhancements and Practices for Aerospace Combustion Niveditha Krishnamoorthy CD-adapco Outline Overview of modeling capability Applications, Practices and Enhancements
More informationWinmostar tutorial LAMMPS Melting point V X-Ability Co,. Ltd. 2017/8/17
Winmostar tutorial LAMMPS Melting point V7.025 X-Ability Co,. Ltd. question@winmostar.com Contents Configure I. Build solid phase II. Equilibration of solid phase III. Equilibration of liquid phase IV.
More informationTutorial Number 18: Heat transfer analysis of a teapot
Tutorial Number 18: Heat transfer analysis of a teapot Stefano Morlacchi September 2014 T. 01608 811777 F. 01608811770 E.info@ssanalysis.co.uk W. www.ssanalysis.co.uk 1. Introduction In this tutorial,
More informationChemical Kinetics: NOx Mechanisms
Mole Fraction Temperature (K) Chemical Kinetics: Nx Mechanisms Jerry Seitzman. 5.15.1.5 CH4 H HC x 1 Temperature Methane Flame.1..3 Distance (cm) 15 1 5 KineticsNx -1 Nx Formation Already pointed out that
More informationEXAMPLE 115 NON-ISOTHERMAL FLOW IN A SINGLE SCREW EXTRUDER DESCRIPTION KEYWORDS FILENAMES. Example 115
EXAMPLE 115 NON-ISOTHERMAL FLOW IN A SINGLE SCREW EXTRUDER DESCRIPTION In this example, we evaluate the flow in the last part of a single screw extruder, including the last few conveying screw elements,
More informationReactors. Reaction Classifications
Reactors Reactions are usually the heart of the chemical processes in which relatively cheap raw materials are converted to more economically favorable products. In other cases, reactions play essential
More informationShape Optimisation of Axisymmetric Scramjets
Shape Optimisation of Axisymmetric Scramjets Hideaki Ogawa 11 th International Workshop on Shock Tube Technology Australian Hypersonics Workshop 2011 University of Queensland, Brisbane 23 rd March 2011
More informationVirtual Cell Version 4.0 Membrane Potential
Virtual Cell Version 4.0 Membrane Potential Creating the BioModel Creating the Application Application I -Studying voltage changes in a compartmental model Application II - Studying voltage, sodium, and
More informationGenerator. Introduction. Modeling in COMSOL Multiphysics
Generator Introduction This example shows how the circular motion of a rotor with permanent magnets generates an induced EMF in a stator winding. The generated voltage is calculated as a function of time
More informationNUMERICAL ANALYSIS OF THE THREE-MATERIAL DOWNHOLE FLOW FIELD IN HYDROTHERMAL JET DRILLING
2017 WJTA-IMCA Conference and Expo October 25-27, 2017 New Orleans, Louisiana Paper NUMERICAL ANALYSIS OF THE THREE-MATERIAL DOWNHOLE FLOW FIELD IN HYDROTHERMAL JET DRILLING Xianzhi Song, Zehao Lyu, Haizhu
More informationCFD Simulation of Internal Flowfield of Dual-mode Scramjet
CFD Simulation of Internal Flowfield of Dual-mode Scramjet C. Butcher, K. Yu Department of Aerospace Engineering, University of Maryland, College Park, MD, USA Abstract: The internal flowfield of a hypersonic
More informationPeristaltic Pump. Introduction. Model Definition
Peristaltic Pump Introduction In a peristaltic pump, rotating rollers are squeezing a flexible tube. As the pushed down rollers move along the tube, the fluid in the tube follows the motion. The main advantage
More informationModeling and simulation of Convergent-Divergent Nozzle Using Computational Fluid Dynamics
Modeling and simulation of Convergent-Divergent Nozzle Using Computational Fluid Dynamics B.V.V. NAGA SUDHAKAR 1, B PURNA CHANDRA SEKHAR 2, P NARENDRA MOHAN 3, MD TOUSEEF AHMAD 4 1Department of Mechanical
More informationMUSCLES. Presented by: Frank Wetze University of Karlsruhe (TH) - EBI / VB month review, 21 September 2004, Karlsruhe
MUSCLES Modelling of UnSteady Combustion in Low Emission Systems G4RD-CT-2002-00644 R&T project within the 5 th Framework program of the European Union: 1 Numerical computations of reacting flow field
More informationFinite Element Modules for Enhancing Undergraduate Transport Courses: Application to Fuel Cell Fundamentals
Finite Element Modules for Enhancing Undergraduate Transport Courses: Application to Fuel Cell Fundamentals Originally published in 007 American Society for Engineering Education Conference Proceedings
More informationCarbon Science and Technology
ASI RESEARCH ARTICLE Carbon Science and Technology Received:10/03/2016, Accepted:15/04/2016 ------------------------------------------------------------------------------------------------------------------------------
More informationDEVELOPMENT OF A ONE DIMENSIONAL ANALYSIS PROGRAM FOR SCRAMJET AND RAMJET FLOWPATHS
DEVELOPMENT OF A ONE DIMENSIONAL ANALYSIS PROGRAM FOR SCRAMJET AND RAMJET FLOWPATHS Kathleen Tran and Walter F. O'Brien, Jr Center for Turbomachinery and Propulsion Research Virginia Polytechnic Institute
More informationOptimization of Divergent Angle of a Rocket Engine Nozzle Using Computational Fluid Dynamics
The International Journal Of Engineering And Science (Ijes) Volume 2 Issue 2 Pages 196-207 2013 Issn: 2319 1813 Isbn: 2319 1805 Optimization of Divergent Angle of a Rocket Engine Nozzle Using Computational
More informationTutorial Eleven Reaction
Reaction 4 th edition, Jan. 2018 This offering is not approved or endorsed by ESI Group, ESI-OpenCFD or the OpenFOAM Foundation, the producer of the OpenFOAM software and owner of the OpenFOAM trademark.
More informationMultiphase Flows. Mohammed Azhar Phil Stopford
Multiphase Flows Mohammed Azhar Phil Stopford 1 Outline VOF Model VOF Coupled Solver Free surface flow applications Eulerian Model DQMOM Boiling Model enhancements Multi-fluid flow applications Coupled
More informationNumerical Simulation of Entropy Generation in Hydrogen Enriched Swirl Stabilized Combustion
Saqr & Wahid CFD Letters Vol. 5(1) 13 www.cfdl.issres.net Vol. 5 (1) March 13 Numerical Simulation of Entropy Generation in Hydrogen Enriched Swirl Stabilized Combustion Khalid M. Saqr 1,* and Mazlan A.
More information15. Studio ScaleChem Getting Started
15. Studio ScaleChem Getting Started Terminology Analysis Brines Gases Oils Reconciliation Before we can discuss how to use Studio ScaleChem we must first discuss some terms. This will help us define some
More informationMULTIPHASE FLOW MODELLING
MULTIPHASE FLOW MODELLING 1 Introduction 2 Outline Multiphase Flow Modeling Discrete phase model Eulerian model Mixture model Volume-of-fluid model Reacting Flow Modeling Eddy dissipation model Non-premixed,
More informationThe data for this lab comes from McDonald Forest. We will be working with spatial data representing the forest boundary, streams, roads, and stands.
GIS LAB 6 Using the Projection Utility. Converting Data to Oregon s Approved Lambert Projection. Determining Stand Size, Stand Types, Road Length, and Stream Length. This lab will ask you to work with
More informationMnova Software for Analyzing Reaction Monitoring NMR Spectra
Mnova Software for Analyzing Reaction Monitoring NMR Spectra Version 10 Chen Peng, PhD, VP of Business Development, US & China Mestrelab Research SL San Diego, CA, USA chen.peng@mestrelab.com 858.736.4563
More informationAnalysis of Flow over a Convertible
69 Analysis of Flow over a Convertible Aniket A Kulkarni 1, S V Satish 2 and V Saravanan 3 1 PES Institute of Technology, India, aniket260919902@gmail.com 2 PES Institute of Technology, India, svsatish@pes.edu
More informationWMS 9.0 Tutorial GSSHA Modeling Basics Infiltration Learn how to add infiltration to your GSSHA model
v. 9.0 WMS 9.0 Tutorial GSSHA Modeling Basics Infiltration Learn how to add infiltration to your GSSHA model Objectives This workshop builds on the model developed in the previous workshop and shows you
More informationPressure Swing Distillation with Aspen Plus V8.0
Pressure Swing Distillation with Aspen Plus V8.0 1. Lesson Objectives Aspen Plus property analysis RadFrac distillation modeling Design Specs NQ Curves Tear streams Understand and overcome azeotrope Select
More informationHeat Transfer Modeling using ANSYS FLUENT
Lecture 1 - Introduction 14.5 Release Heat Transfer Modeling using ANSYS FLUENT 2013 ANSYS, Inc. March 28, 2013 1 Release 14.5 Outline Modes of Heat Transfer Basic Heat Transfer Phenomena Conduction Convection
More informationWinmostar tutorial LAMMPS Polymer modeling V X-Ability Co,. Ltd. 2017/7/6
Winmostar tutorial LAMMPS Polymer modeling V7.021 X-Ability Co,. Ltd. question@winmostar.com 2017/7/6 Contents Configure I. Register a monomer II. Define a polymer III. Build a simulation cell IV. Execute
More informationSimulating the combustion of gaseous fuels 6th OpenFoam Workshop Training Session. Dominik Christ
Simulating the combustion of gaseous fuels 6th OpenFoam Workshop Training Session Dominik Christ This presentation shows how to use OpenFoam to simulate gas phase combustion Overview Theory Tutorial case
More informationXXXVIII Meeting of the Italian Section of the Combustion Institute
Coupling a Helmholtz solver with a Distributed Flame Transfer Function (DFTF) to study combustion instability of a longitudinal combustor equipped with a full-scale burner D. Laera*, S.M. Camporeale* davide.laera@poliba.it
More informationCFD Simulation of Catalytic Combustion of Benzene
Iranian Journal of Chemical Engineering Vol. 6, No. 4 (Autumn), 9, IAChE CFD Simulation of Catalytic Combustion of Benzene A. Niaei 1, D. Salari, S. A. Hosseini 3 1- Associate Professor of Chemical Engineering,
More informationMAGNETITE OXIDATION EXAMPLE
HSC Chemistry 7.0 1 MAGNETITE OXIDATION EXAMPLE Pelletized magnetite (Fe 3 O 4 ) ore may be oxidized to hematite (Fe 2 O 3 ) in shaft furnace. Typical magnetite content in ore is some 95%. Oxidation is
More informationInitial and Boundary Conditions
Initial and Boundary Conditions Initial- and boundary conditions are needed For a steady problems correct initial conditions is important to reduce computational time and reach convergence Boundary conditions
More informationNumerical Simulation of Supersonic Expansion in Conical and Contour Nozzle
Numerical Simulation of Supersonic Expansion in Conical and Contour Nozzle Madhu B P (1), Vijaya Raghu B (2) 1 M.Tech Scholars, Mechanical Engineering, Maharaja Institute of Technology, Mysore 2 Professor,
More informationVISIMIX TURBULENT. TACKLING SAFETY PROBLEMS OF STIRRED REACTORS AT THE DESIGN STAGE.
VISIMIX TURBULENT. TACKLING SAFETY PROBLEMS OF STIRRED REACTORS AT THE DESIGN STAGE. This example demonstrates usage of the VisiMix software to provide an Inherently Safer Design of the process based on
More informationShape, Convection and Convergence
Presented at the COMSOL Conference 2008 Boston Shape, Convection and Convergence,VP Research, Inc. Who is? Who is? We are: A Technical Consultation firm in business since 1993 Who is? We are: A Technical
More informationInternational Journal of Engineering Trends and Technology (IJETT) Volume 49 Number 6 July 2017
Effect of Divergence Angle on the Performance and Flow Analysis of 3D Annular Diffuser of an Aircraft Engine using CFD Technique Sharan Padashetty 1, Pravin Honguntikar 2, K. Rajagopal 3 1 Ph.D Research
More informationNUMERICAL SIMULATION OF PLASMA ASSISTED TURBULENT COMBUSTION
NUMERICAL SIMULATION OF PLASMA ASSISTED TURBULENT COMBUSTION BY ANAND SRINIVAS ANKALA A THESIS PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR
More information85. Geo Processing Mineral Liberation Data
Research Center, Pori / Pertti Lamberg 15023-ORC-J 1 (23) 85. Geo Processing Mineral Liberation Data 85.1. Introduction The Mineral Liberation Analyzer, MLA, is an automated mineral analysis system that
More informationApplying MapCalc Map Analysis Software
Applying MapCalc Map Analysis Software Generating Surface Maps from Point Data: A farmer wants to generate a set of maps from soil samples he has been collecting for several years. Previously, he would
More informationIntroduction to SuperPro Designer for Batch Processing Modelling
Introduction to SuperPro Designer for Batch Processing Modelling Session outline Getting started SuperPro Designer (SPD) interface Flowsheet drawing and editing Unit procedures initialisation Simulation
More informationPacked Bed Reactor. Introduction. Model Definition
Packed Bed Reactor Introduction The packed bed reactor is one of the most common reactors in the chemical industry, for use in heterogeneous catalytic processes. In essence, the reactor consists of a container
More informationAppendix F. + 1 Ma 1. 2 Ma Ma Ma ln + K = 0 (4-173)
5:39p.m. Page:949 Trimsize:8.5in 11in Appendix F F.1 MICROSOFT EXCEL SOLVER FOR NON-LINEAR EQUATIONS The Solver is an optimization package that finds a maximum, minimum, or specified value of a target
More informationv Prerequisite Tutorials GSSHA WMS Basics Watershed Delineation using DEMs and 2D Grid Generation Time minutes
v. 10.1 WMS 10.1 Tutorial GSSHA WMS Basics Creating Feature Objects and Mapping Attributes to the 2D Grid Populate hydrologic parameters in a GSSHA model using land use and soil data Objectives This tutorial
More informationFlow Analysis and Optimization of Supersonic Rocket Engine Nozzle at Various Divergent Angle using Computational Fluid Dynamics (CFD)
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 11, Issue 6 Ver. IV (Nov- Dec. 2014), PP 01-10 Flow Analysis and Optimization of Supersonic Rocket
More informationv WMS Tutorials GIS Module Importing, displaying, and converting shapefiles Required Components Time minutes
v. 11.0 WMS 11.0 Tutorial Importing, displaying, and converting shapefiles Objectives This tutorial demonstrates how to import GIS data, visualize it, and convert it into WMS coverage data that could be
More informationPStress R Pulley Stress Analysis Software Users Manual*
PStress R Pulley Stress Analysis Software Users Manual* Issued: October 7, 2014 *For PStress V3.5 CONVEYOR DYNAMICS, INC. 1111 West Holly St. Bellingham, WA, 98225 (USA) Phone: +1 (360) 671-2200 Contents
More informationLeaf Spring (Material, Contact, geometric nonlinearity)
00 Summary Summary Nonlinear Static Analysis - Unit: N, mm - Geometric model: Leaf Spring.x_t Leaf Spring (Material, Contact, geometric nonlinearity) Nonlinear Material configuration - Stress - Strain
More informationMERGING (MERGE / MOSAIC) GEOSPATIAL DATA
This help guide describes how to merge two or more feature classes (vector) or rasters into one single feature class or raster dataset. The Merge Tool The Merge Tool combines input features from input
More information