48 lines
1.8 KiB
Plaintext
48 lines
1.8 KiB
Plaintext
Overview
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========
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+ This is a template case with single inlet and outlet
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+ Setup to run the compressible rhoSimpleFoam solver
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+ The case is designed to be meshed with snappyHexMesh
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+ snappyHexMesh is setup to use a single trisurface file named CAD.obj
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+ Copy the CAD.obj file to the constant/triSurface directory
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+ The CAD.obj should contain an inlet and outlet region to create the relevant
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patches in the mesh
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Background Mesh
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===============
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+ The user should establish the bounds of their CAD.obj file
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+ The blockMeshDict file contains a backgroundMesh subditionary
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+ For internal flows, where CAD.obj describes the external boundary, set xMin,
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xMax, etc to be beyond the CAD.obj bounds
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+ For external flows, the background mesh can define the external boundary by
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uncommenting entries, e.g. left, in the boundary section of blockMeshDict
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+ Set background mesh density with xCells, yCells, zCells
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+ Run blockMesh
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Castellated Mesh
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================
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+ In the snappyHexMeshDict file, replace <inletPatch> with the name of the inlet
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region in the CAD.obj file
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+ Replace <outletPatch> with the name of the outlet region
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+ run snappyHexMesh to obtain a castellatedMesh
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+ Review the mesh; modify refinement levels and regenerate the mesh as required
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(levels are set in refinementSurfaces and refinementRegions)
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Snapped Mesh
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============
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+ In snappyHexMeshDict, set castellatedMesh off; snap on;
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+ Run the snapping phase of snappyHexMesh
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+ Review the mesh
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Layers
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======
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+ To add layers to the mesh along wall boundary patches...
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+ Switch on addLayers; switch snap off;
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+ Run snappyHexMesh
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+ The number of layers can be changed by modifying nSurfaceLayers
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Initialisation
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==============
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+ In the field files in the 0 directory, set inlet values
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+ For example, in 0/U, set the inlet velocity Uinlet
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+ Set the viscosity in constant/transportProperties |