Simulating flow in a Lid Driven Cavity - English
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Error on using blockMesh command
Hello, I am trying to replicate the cavity problem discussed in Tutorial 3 but have encountered the following error. FOAM FATAL ERROR: cannot find file "/home/openfoam/run/system/controlDict" From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 539.FOAM exitingHow should I proceed?
08-09M 0-10S entropy101
Answer last updated on: Sept. 27, 2021, 3:20 p.m.
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Regarding tranport values in lid driven cavity
Good morning sir,Recently i started using openfoam, i have watched lid driven cavity simulation problem, for the same problem i changed time step to 2000 and higher values, still it is not convergent. Also i changed the methods,schemes and increased my mesh up to 100 but it is not convergent!1) for which time step, the tutorial is convergent ?2) what is the fluid used in that problem ? How can it be 0.01? How to take the value of kinematic viscosity ? 3) your case is Re = 10, suppose for Re = 100, how to take d,V and viscosity for the fluid air i need ? i did like this , d=0.1m, v=1, accordingly viscosity =0.001? my doubt is viscosity cannot be constant in case of air, for different temperatures different viscosities? please tell me how to take viscosity? Is my approach is correct?4) Finally please tell me how to d,v and kinematic viscosity values ? For what time step and values it is convergent.Thank you.
10-11M 30-40S Nathan
Answer last updated on: Jan. 22, 2018, 12:11 p.m.
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dimensions of cavity
Q 1) for a square cavity blocks( hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1));Mesh size 20x20 then n= 20,suppose blocks( hex (0 1 2 3 4 5 6 7) (40 20 1) simpleGrading (1 1 1));mesh size = 40x 20, then how to take n = ? Q2)i want a parallel plate with length = 10 ft, breadth = 1 ft.convertToMeters 1;vertices( (0 0 0) (10 0 0) (10 1 0) (0 1 0) (0 0 0.01) (10 0 0.01) (10 1 0.01) (0 1 0.01));Is it write sir ?
08-09M 20-30S vnarayana.wgl
Answer last updated on: April 7, 2016, 7:45 p.m.
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How to calculate Nusselt number and Residual plots(convergence criteria)
I am using buoyantBoussinesqSimpleFoam solver for natural convection problem. i got few results please help me to draw residual plots(convergence criteria and How to calculate Nusselt number ?
08-09M 20-30S vnarayana.wgl
Answer last updated on: April 6, 2016, 8:57 a.m.
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1
Introduction to OpenFOAM -
2
Creating simple geometry in OpenFOAM -
3
Creating curved geometry in OpenFOAM -
Simulating flow in a Lid Driven Cavity -
5
Supersonic flow over a wedge -
6
2D Laminar Flow in a channel -
7
Basic Post Processing using ParaView -
8
Turbulent Flow in a Lid driven Cavity -
9
Flow over a flat plate -
10
Simulating Hagen Poiseuille flow -
11
Downloading and installing Salome -
12
Creating and meshing a curved pipe geometry in Salome for OpenFOAM -
13
Exporting geometry from Salome to OpenFOAM -
14
Introduction to SnappyHexMesh -
15
Generating Mesh using snappyHexMesh -
16
Importing mesh file in OpenFOAM -
17
Installing and running Gmsh -
18
Creating and Meshing aerofoil in Gmsh -
19
Creating a sphere in GMSH -
20
Unstructured mesh generation using Gmsh -
21
Installing and Running PyFoam -
22
Using Template files in PyFoam -
23
Using PyFoam Utilities
Questions posted on ST Forums:
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Outline:
Simulating flow in a Lid Driven Cavity using OpenFOAM Problem specification File structure of Lid Driven Cavity Boundary Conditions Meshing the Geometry Checking the geometry and viewing in paraview About the Solver Solving Paraview Streamline contour. Plot U and V velocity Validate result
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| Duration: | 00:10:58 | Size: | 7 MB |
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