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Hello, I am trying to run a CFD on a model in VWT in order to eventually extract the pressure on the surfaces to place them as node pressures on the same model in optistruct.

 

 

Currently I am having problems getting VWT to run successfully.

I have been through the troubleshooting webpage (http://forum.altairhyperworks.com/index.php?/topic/13776-workflow-for-virtual-wind-tunnel/&tab=comments#comment-20229).

 

The Run parameters I am using are:

5a09c47bd34ad_RunParameters.png.5a238b0147634690c0cd142dee42a3bb.png

 

The vwtAnalysis VOUT file is as follows:

5a09c459845b2_vwtAnalysisVOUTfile.png.28a5cd85f4538e707f45dfa7ea8843b4.png

 

The vwtAnalysis MeshSim file is as follows:

This suggests there is an error in line 65 but i do not know what this means.

5a09c52f98cc3_vwtAnalysisMeshSimfile.thumb.png.c7de0fc9fb784e7704ce263a78c9c21d.png

 

I am not getting a mesh intersection file if I intersect the model with the wind tunnel boundary.

However, I obtain a CAD.DIR but not a MESHSIM.DIR the output folder.

 

The link to the Nastran file:

 

 

I hope you can help.

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I could not make much sense from the file you uploaded. I imported it in HM and see four components. Not very typical for VWT, I would say. 

Could you describe what you are trying to simulate with VWT ? 

 

image.png

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Hello, I am trying to run a CFD on a model in VWT in order to eventually extract the pressure on the surfaces to place them as node pressures on the same model in optistruct.

 

This is what I was trying to achieve. Unfortunately the deadline for which it was to be done by has passed now. However, I am still interested in why there was an error.

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Hi all that may come across this post.

 

The problem has been resolved since.

The issue was that the model was intersecting/too close to the boundary of the wind tunnel within VWT.

 

By moving the model into the centre of the (virtual) wind tunnel the problem was resolved.

 

Hope this helps.

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