low numerical precision in CP_H
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Joep de Boer
Apr 3, 2026, 6:30:41 AMApr 3
to OpenVSP
After Running some propeller pseudo-steady simulation I was suprised to see a step-wise CP_h and graph wile CP is perfectly smooth. As the only difference should be some constant. The problem is in the result files, the rotor.1 file CP_h values are written with 5 decimals. Is there an option to write result files in scientific notation?
If not would like to give it a try fixing it, is this possible without breaking OpenVSP?
Sincerely,
Joep
Rob McDonald
Apr 3, 2026, 11:02:44 AMApr 3
to OpenVSP
What version of OpenVSP are you running?
I believe this has been fixed in recent versions.
Rob
I believe this has been fixed in recent versions.
Rob
Joep de Boer
Apr 7, 2026, 12:09:47 PMApr 7
to OpenVSP
3.48.2 I haven't checked if it breaks anything but in VSP_Solver.C I changed to %e for writing result files
Op vrijdag 3 april 2026 om 17:02:44 UTC+2 schreef Rob McDonald:
Joep de Boer
Apr 7, 2026, 12:10:02 PMApr 7
to OpenVSP
3.48.2 , I think it is as simple as changing %10.5f to %14.6e in VSP_SOLVER.C in all fprintf calls however haven't checked it and especially not if something else will break due to it. For now I will change it locally and see if that works.
Op vrijdag 3 april 2026 om 17:02:44 UTC+2 schreef Rob McDonald:
What version of OpenVSP are you running?
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