OpenFoam 9: Cannot use postProcess to calculate MachNo -- CFD Online Discussion Forums

November 25, 2022, 01:54	OpenFoam 9: Cannot use postProcess to calculate MachNo	#1
manle0312 New Member Man Le Join Date: Dec 2014 Posts: 13 Rep Power: 11	Hi all. I am following WolfDynamics course to solve flow past a cylinder, using a compressible solver: rhoPimpleFoam case 24. The instructions are as follow: https://imgur.com/a/e65aP0i Everything except step 8 works. Step 8 involves; Code: rhoPimpleFoam -postProcess -func MachNo The error tells me to use foamRun, so I did: Code: foamRun -postProcess -func MachNo and got the same error. Te error I got (for both case) is: https://imgur.com/a/YrAkz2V So I tried: Code: postProcess -func "MachNo(U)" and got error such as "functionObjects::MachNo MachNo(U) failed to execute" Any help is appreciated to compute the Mach number.

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