Running Propeller Analysis over Python API

Efe Egemen Şen

unread,

Oct 30, 2024, 5:48:45 AM10/30/24

to OpenVSP

Hello,

For the last couple days I have been struggling with running propeller analysis over the Python API to sweep an array of free-stream velocities.

However, the problem I am encountering is whenever some of the runs finish, ExecAnalysis just prints "Done" and gets stuck even though the results are exported to a xxxx.rotor.n file. This just stops the iteration and prevents the for loop from moving on to the next iteration.

Is there any way to work around this? I am okay with some of the cases to fail but at least I don't want them to stop the iteration all together.

Best regards,

Efe

apc_bem_10x10.vsp3

calc_prop_vlm.py

Rob McDonald

unread,

Nov 1, 2024, 9:05:49 PM11/1/24

to OpenVSP

After VSPAERO runs the flow solution, it is trying to take a velocity survey slice through the solution. It looks like this does not work for unsteady cases.

If you open up the *.vsp3 file, go to the VSPAERO GUI, then to the Advanced tab.

Delete the Y=0 slice.

Then save the *.vsp3 file -- your script should work better then.

Rob

Kun Drew

unread,

Jul 2, 2025, 7:38:33 AM7/2/25

to OpenVSP

Hi.

Which function should I use to cancel Cpslice when I use the Python API for analysis.

Follow the instructions of this post：OpenVSP does not work with python

I made the following attempt but it didn 't work：

vsp.SetIntAnalysisInput("VSPAEROSweep", "CpSliceFlag", [0])

What is the correct function How to set the parameters to cancel the Cpslicer.

Best regards,

Kang

Reply all

Reply to author

Forward