Thank you very much for answering. It will be nice for future reference since I plan to use kOmegaSSTIDDES also, but I forgot to mention that its was for SpalartAlamarasIDDES....sorry my bad....but I figured out how to find it for SAIDDES from your link...thanks again! I guess I'll need to use the same approach in order to know how the different section (e.i. IDDESdelta, IDDESDeltaCoeffs, smoothCoeffs, etc.) work all together. And about the

smoothCoeffs

subdictionary, does someone has reference to suggest about the topic? Thank again for the help!