Author Topic: TInFFoam cannot start with turbulentDFSEMInlet  (Read 1263 times)

stan_lw

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TInFFoam cannot start with turbulentDFSEMInlet
« on: April 29, 2021, 06:42:31 PM »
Hi, I tried to run the homogeneousTurbulence tutorial case with the turbulentDFSEMInlet boundary condition but the simulation cannot start with a missing keyword "delta". What is this delta? I cannot find it in the documentation. I will email the case file as it failed to upload here, thanks.

pmackenz

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Re: TInFFoam cannot start with turbulentDFSEMInlet
« Reply #1 on: May 18, 2021, 07:12:30 PM »
1.     The parameter with the keyword “delta” refers to a characteristic length of a particular fluid flow problem. Its value is mainly dependent on the problem itself. It is usually taken as the  characteristic length of the considered object model (for example, the cross-section width of a building) in the computational domain or one of the dimensions of the computational domain. From my experiences, the determination of this parameter is quite arbitrary.