Question

Which of these statements holds true regarding the Shear Stress Transport model?

(a) In the near-wall region, the k-ε model is transformed into k-ω model

(b) In the near-wall region, the standard k-ε model is used

(c) In regions far from the wall, the k-ε model is transformed into k-ω model

(d) In regions far from the wall, the k-ω model is used

I have been asked this question in an interview for job.

This intriguing question originated from Turbulence Modelling topic in portion Turbulence Modelling of Computational Fluid Dynamics

Answer 1

Correct option is (a) In the near-wall region, the k-ε model is transformed into k-ω model

The explanation is: The Shear Stress Transport model uses a transformation of the k-ε model into a k-ω model in the near-wall region. In the region far from the wall, it uses the standard k-ε model as it gives satisfactory results there.