Generating Mesh using snappyHexMesh - English
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snappyHexMesh
1.How to set thickness from zero to maximum.....2.How we will decide Free stream velocity and Raynolds number for different type of flow..For example compressible flow ,incompressible flow,subsonic flow supersonic flow..3.How we will decide boundary condition for flat plate in case of open channel.Questions 2 and 3 are for video 10 ,9
08-09M 40-50S pvkapure@aissmspoly.org.in
Answer last updated on: May 3, 2020, 10:19 p.m.
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Number of cells in mesh does not equal size of cellLevel
Hello every one, using this tutorial with my OF 2.1 i've got the following issue once i executed the "snappyHexMesh -overwrite"if you know how to solve it, please help me.// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //Create timeCreate mesh for time = 0Read mesh in = 1.234 sOverall mesh bounding box : (-0.03 -0.03 -0.03) (0.03 0.03 0.01)Relative tolerance : 1e-006Absolute matching distance : 9.38083e-008Reading refinement surfaces.Read refinement surfaces in = 0.204 sReading refinement shells.Refinement level 3 for all cells inside refineHoleRead refinement shells in = 0 sSetting refinement level of surface to be consistent with shells.Checked shell refinement in = 0.125 sReading features.Refinement level 0 for all cells crossed by feature "flange.eMesh" (767 points,776 edges).Detected 18 featurePoints out of 767 on feature flange.eMeshRead features in = 0.031 sDetermining initial surface intersections-------------------------------------------> FOAM FATAL ERROR:Number of cells in mesh:8000 does not equal size of cellLevel:35656This might be because of a restart with inconsistent cellLevel. From function hexRef8::getLevel0EdgeLength() const in file polyTopoChange/polyTopoChange/hexRef8.C at line 357.FOAM aborting
09-10M 0-10S manuelffonseca
Answer last updated on: April 10, 2017, 1:12 a.m.
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Generating Mesh using snappyHexMesh
hello every one, i ask you for a problem with the zip files downloaded, my command blockMesh work correctly, but it dont work, and show me this messageUsage: surfaceFeatureExtract [OPTIONS] <surface> <output set>options: -case <dir> specify alternate case directory, default i -closeness <scalar> span to look for surface closeness -deleteBox <((x0 y0 z0)(x1 y1 z1))> remove edges within specified bounding box -featureProximity <scalar> distance to look for close features -includedAngle <degrees> construct feature set from included angle [ -manifoldEdgesOnly remove any non-manifold (open or more than faces) edges -minElem <int> remove features with fewer than the specifi edges -minLen <scalar> remove features shorter than the specified -noFunctionObjects do not execute functionObjects -set <name> use existing feature set from file -subsetBox <((x0 y0 z0)(x1 y1 z1))> remove edges outside specified bounding box -writeObj write extendedFeatureEdgeMesh obj files -writeVTK write extendedFeatureEdgeMesh vtk files -srcDoc display source code in browser -doc display application documentation in browse -help print the usageextract and write surface features to fileUsing: OpenFOAM-2.1 (see www.OpenFOAM.org)Build: 2.1-88b2f2ae3a0b--> FOAM FATAL ERROR:Wrong number of arguments, expected 2 found 0FOAM exitingThen the command "snappyHexMesh -overwrite" will not work as i hopePlease help me.
07-08M 50-60S manuelffonseca
Answer last updated on: April 8, 2017, 2:54 a.m.
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Error while running SnappyHexMesh command
I am trying to use snappyHexMesh utility to generate hex meshes. I have generated base mesh using blockMesh command and surfaceFeatureExtract command is also executed correctly on the generated .stl file. However, when I try to execute 'snappyHexMesh -overwrite' command I get the following error"Point (x y z) is not inside the mesh or on a face or edge." According to my geometry definition, the mentioned point (x y z) should lie inside the region. What is the cause of this error and how to rectify this problem?
07-08M 10-20S AashayT
Answer last updated on: April 4, 2017, 5:14 p.m.
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1
Introduction to OpenFOAM -
2
Creating simple geometry in OpenFOAM -
3
Creating curved geometry in OpenFOAM -
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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 -
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Exporting geometry from Salome to OpenFOAM -
14
Introduction to SnappyHexMesh -
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
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Outline:
Generating mesh using snappyHexMesh utility Problem specification About the solver File structure of flange Meshing the geometry by snappyHexMesh Solving Paraview visualization Result
| Width: | 928 | Height: | 704 |
|---|---|---|---|
| Duration: | 00:11:34 | Size: | 8.7 MB |
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