EngineFoam OpenFoam v2.2.1
Hi everyone,
I am trying to use engineFoam (OpenFoam v2.2.1)solver which is basically a RANS solver, for LES modeling. But once i specify the turbulence model as LES, provide LES properties file, and try and run the solver i get the following error : --> FOAM FATAL ERROR: request for volScalarField mut from objectRegistry region0 failed available objects of type volScalarField are 20 ( thermo:mu thermo:psi b hau rho sqr(((-(0.666667*tr(symm(grad(U))))+sqrt((sqr((0.666667*t r(symm(grad(U)))))+((4*(ce|delta))*(((2*ck)*delta) *(dev(symm(grad(U)))&&symm(grad(U))))))))|(2*(ce|d elta)))) (((2*ck)*delta)*(dev(symm(grad(U)))&&symm(grad(U)) )) delta (0.666667*tr(symm(grad(U)))) ha thermo:psi_0 p T Tu alphaSgs geometricDelta (ce|delta) muSgs thermo:alpha ft ) From function objectRegistry::lookupObject<Type>(const word&) const in file /usr/apps1/openfoam-2.2.1/OpenFOAM-2.2.1/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 164. Since "mut" is defined for RANS modeling i am confused.Do I need to modify the turbulenceModel.C file in this case? I tried adding a volScalarfield "mut" to the createFields.H file , just to get things going but i still get the same error. Please note that I had been switching to LES in version 2.1.1 of the same solver , in the same way without any errors. Any help will be appreciated. Thanks in Advance. |
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I think your 0 files has some question, Maybe you should check it. good luck |
hi I've got same problem did you solve the problem
Did you try changing nuSgs to muSgs in source files code? |
Try this
I know it's too late to reply but just for future users.
This problem happens due to the misuse of wall functions, try using suitable ones for your model. |
I have just run engineFoam for LES turbulence model without errors in openFoam 2.2.1.
Remember that openFoam 2.1.1 is bugged. 1. Copy LESProperties to your constant folder. 2. Change in turbulenceProperties to LESModel. 3. Copy files muSgs and alphaSgs to -180 folder. 3. Change names of boundaryField to piston, liner and cylinderHead (as You call the group of outer faces) in Your files muSgs and alphaSgs. I haven't done analyse of results yet. |
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I'm working on similar application of LES turbulence model in my engineFoam solver in openFoam version 2.4. I'm curious if the above steps lead to correct solution or you made further changes in the solver. Please advise. Thanks |
Hello.
I just run it. I haven't validate results. Here is comparison of RANS and LES but no changes for LES settings were made: https://www.youtube.com/watch?v=HLiJbf95QG4 https://www.youtube.com/watch?v=KA--7CpiCTA |
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