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Which of these models is a hybrid of LES and RANS?(a) DNS model(b) DES model(c) WALE model(d) RNG – LES modelI had been asked this question during an online exam.This interesting question is from Turbulence Modelling topic in chapter Boundary Layers, Laminar & Turbulent Boundary Layers, Navier Stokes Solutions of Aerodynamics

Answer»

The CORRECT choice is (b) DES model

The best I can EXPLAIN: DES model is a hybrid of LES and RANS model and makes use of advantages of both. For treating near –wall REGIONS, DES works like the RANS model and for rest of the region, it works as the LES model.



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