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How to export Generic Bc in Pointwise(as in Gridgen) ? |
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April 23, 2015, 10:14 |
How to export Generic Bc in Pointwise(as in Gridgen) ?
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#1 |
New Member
XieQing
Join Date: Mar 2013
Location: Capital of Qin Dynasty
Posts: 22
Rep Power: 13 |
It seems Pointwise CAE solver doesn't support generic BCs as Gridgen ???
How to export "Analysis BCs" in Pointwise (as Gridgen does) ??? |
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April 24, 2015, 10:52 |
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#2 |
Senior Member
David Garlisch
Join Date: Jan 2013
Location: Fidelity Pointwise, Cadence Design Systems (Fort Worth, Texas Office)
Posts: 307
Rep Power: 14 |
XieQing,
As you discovered, Pointwise uses a different approach for BCs than Gridgen. However, the Pointwise approach is much more flexible. In Pointwise, you can create as many named BCs as you want. Basically, every BC you create in Pointwise is equivalent to a generic BC in Gridgen. The basic steps to using BCs in Pointwise are:
This CFDMeshing video may help. Bonus: The steps above also apply to using VCs in Pointwise! |
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April 25, 2015, 01:25 |
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#3 | |
New Member
XieQing
Join Date: Mar 2013
Location: Capital of Qin Dynasty
Posts: 22
Rep Power: 13 |
Quote:
In Gridgen the "Export Anlaysis BCs" button creats a generic BCs' information file( IF the Solver is Generic ) The file has such FORMAT as: write flow_solver_id write number_of_blocks do number_of_blocks write block_imax, block_jmax,(and block_kmax if 3D), block_name c........a region is a boundary condition or interblock connection write number_of_regions_on_block do number_of_regions_on_block write source_region_imin, source_region_imax,source_region_jmin, source_region_jmax,(and source_region_kmin, source_region_kmax if 3D),bc_number if region is a connection (bc_number<0) then c..............For an interblock connection, there are three c..............pairs of indices that must be matched (three on c..............the source face and three on the target face). c..............The index that's constant on both the source and c..............target faces is easy to determine simply by c..............comparing the min and max indices and finding the c..............pair in which min and max are the same. c..............On each of the source and target faces, Gridgen c..............writes one of the two remaining min-max index c..............combinations as negative numbers. The negative c..............min-max pair on each face correspond. Once you c..............determine the corresponding negative indices c..............just convert them to positive numbers. c..............That leaves one pair of indices that align. c..............Keep in mind that the max index may actually c..............be less than the min index. You can either use c..............a negative increment to step through the index c..............or you can swap the min and max indices on BOTH c..............source and the matching target indices. write target_region_imin, target_region_imax,target_region_jmin, target_region_jmax,(and target_region_kmin, target_region_kmax if 3D), target_block_number endif end do number_of_regions_on_block end do number_of_blocks My question is how can I directly output such file in Pointwise ? |
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April 25, 2015, 01:28 |
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#4 |
New Member
XieQing
Join Date: Mar 2013
Location: Capital of Qin Dynasty
Posts: 22
Rep Power: 13 |
It seems Pointwise doesn't support a SOLVER called "Generic" ???
which is actually PLOT3D formatted |
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April 27, 2015, 10:12 |
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#5 |
Senior Member
David Garlisch
Join Date: Jan 2013
Location: Fidelity Pointwise, Cadence Design Systems (Fort Worth, Texas Office)
Posts: 307
Rep Power: 14 |
XieQing is correct.
Pointwise does not support the generic exporter available in Gridgen. However, adding a generic CAE exporter is on our short list of enhancements. Barring any technical difficulties, we expect it to be finished this summer. In the meantime, you can probably just export as Plot3D. As XieQing said, the Gridgen generic format uses Plot3D for the grid data and also creates a BC file. If you want even more control, you should consider writing your own CAE exporter using the Pointwise CAE Plugin SDK. |
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analysis bcs, cae solver, generic |
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