Smoothing of IDDES delta
Dear OpenFOAM users,
I am trying to test IDDES models for snappyHexMesh grids including 2:1 jumps in cell size in OpenFOAM-2.2.0. For this reason, I'd like to test the smoothing option for the delta used by the IDDES model. For DES97 and DDES, this works just fine, where delta is defined in LESProperties, e.g.: #---- delta smooth; smoothCoeffs { delta maxDeltaxyz; maxDeltaxyzCoeffs { deltaCoeff 2; } maxDeltaRatio 1.2; } #---- I tried to convert the syntax for the IDDES delta as follows: #---- IDDESmodelCoeffs { delta smooth; smoothCoeffs { delta IDDESDelta; IDDESDeltaCoeffs { cw 0.15; deltaCoeff 1; } maxDeltaRatio 1.2; } cdt1 8; } delta maxDeltaxyz; maxDeltaxyzCoeffs { deltaCoeff 2; } #---- Unfortunately, this leads to an infinite loop when I start my computation. Here is an excerpt of my log file: // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 80 Reading field p Reading field U Reading/calculating face flux field phi Selecting incompressible transport model Newtonian Selecting turbulence model type LESModel Selecting LES turbulence model IDDESmodel Selecting LES delta type smooth Selecting LES delta type maxDeltaxyz IDDESmodelCoeffs { delta smooth; smoothCoeffs { delta IDDESDelta; IDDESDeltaCoeffs { cw 0.15; deltaCoeff 1; } maxDeltaRatio 1.2; } } Selecting LES delta type smooth Selecting LES delta type maxDeltaxyz Selecting LES delta type smooth Selecting LES delta type IDDESDelta Selecting LES delta type smooth Selecting LES delta type IDDESDelta Selecting LES delta type smooth Selecting LES delta type IDDESDelta Selecting LES delta type smooth Maybe someone of you has already stumbled about this problem and can share his experience/the correct delta smoothing settings in this thread. Thanks in advance, Marian |
Hi, Did you solve this problem?
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Still an issue
Hey, did anyone solve this? I'm also getting the same issue with both kOmegaSSTDES and SpalartAllmarasDES with all the different delta types.
Running Openfoam-dev/200402 Edit: Got it to work properly with the full set of coefficents. |
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