hybrid RANS/LES

What is it about?

The paper focuses on numerical simulation of round impinging jets. Two methods are used for simulation of impinging jets: RANS and hybrid method. We show that the hybrid method which combines the advantages of two modelling strategies gives far more reliable results than the classical technique (RANS). Some insight into the flow physics in the stagnation flow region is given.

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Why is it important?

With the hybrid RANS/LES models, improved fluid flow and heat transfer results are obtained compared to RANS, in the impact region of the impinging jets. This is of importance in many engineering applications: enhancement of cooling efficiency of some technical devices. We show that the hybrid technique is well suited for application in industry since it is able to capture the relevant flow physics at moderate cost and increases the reliability of the modelling techniques.