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Found 3 results

  1. Hi all, I am using VWT to run a CFD analysis on a prototype vehicle. I have attached a picture below to show the model. I have the model meshed using HM. I have already ran CFD successfully before, however, this is the first time I add the wheels to simulate their rotation. The analysis works fine and takes around 20 mins to reach 80 percent, and then stays at 80 percent for hours. I have attached the text files in the run directory, I have checked them and couldn't find an error, however, I might be missing something. vwtAnalysis.1.Log vwtAnalysis.1.MeshSim.txt wheels_2nd_try.stmod
  2. I have a problem with the virtual wind tunnel. When I do the test it works perfectly but at 80% it does not progress and it closes the hw.exe. At that point you should open Acufieldview to make the captures that will be exported in the PDF. But the essay stays there and does not export the PDF. If I look in the folder Run Patch the test is finished but without the PDF. In the folder I can find all the results of the coefficients but not the PDF. Would anyone know how to solve this problem? I attach files to explain better. Thanks for your help. cilindro.nas
  3. Hello everyone. I am currently running external aerodynamics flow simulations for a truck model. I use HyperMesh to generate the surface mesh and then use Virtual Wind Tunnel to run the flow simulation. Once the simulation is complete, VWT generates the automatic PDF report with a drag coefficient value. However, after performing design modifications to the geometry of the model, the drag coefficient values seem to be off from expectations. Hence, I am wondering if there is a way to manually calculate the drag force generated by the model in AcuFieldView, AcuConsole or AcuProbe and then the drag coefficient using the frontal area?. I want to check the validity of the drag coefficient values that are automatically generated in the report. Also, I have noticed that the report calculates the drag for each and every part in the model and then sums it up to give the total drag value. I'm wondering if there is a way to select the entire model (all parts included) and display the drag force created by it rather than doing it for individual parts. Thanks for the help in advance! Yatish Chandra
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