# New LESProperties in version 1.6

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 November 8, 2009, 13:16 New LESProperties in version 1.6 #1 Senior Member     Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 12 Hello world. Taking a look into the LESProperties in the channel395-case I have recognized a change to the LESProperties dictionary from version 1.5 to 1.6. I'm not familiar with the new dictionary. Is there some documentation anywhere? Lets be specific: The tutorial case uses a oneEqnEddy-model with vanDriest-damping. In the vanDriestCoeffs-entry I can find the following: Code: ```vanDriestCoeffs { delta cubeRootVol; cubeRootVolCoeffs { deltaCoeff 1; } smoothCoeffs { delta cubeRootVol; cubeRootVolCoeffs { deltaCoeff 1; } maxDeltaRatio 1.1; } Aplus 26; Cdelta 0.158; }``` First of all: What happend to the old ce and ck coefficients? And why is there an entry with delta cubeRootVol inside the vanDriestCoeffs entry? I thought is either vanDriest or cubeRootVol? Why are these two linked by now? I have made some basic experience with LES, but I would not say I'm an expert. Maybe I'm just too confused by the new look of the dictionary and miss the link to the old coefficients... Have a nice day. S. __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

 January 12, 2010, 05:24 #2 Member   Join Date: Sep 2009 Posts: 45 Rep Power: 9 I think this is because you use the cubeRootVol method for delta. Thus, you ask for using the vanDriestCoeffs for this particular one. This explains the entry inside the vanDriestCoeffs.

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