Question

Which of these is an advantage of the k-ω model over the k-ε model?

(a) Does not depend on the ε value

(b) Easier to integrate

(c) Can be applied for turbulent boundary layers

(d) Has only two extra equations

This question was addressed to me in my homework.

Enquiry is from Turbulence Modelling in chapter Turbulence Modelling of Computational Fluid Dynamics

Answer 1

The correct answer is (b) Easier to integrate

Easiest explanation: The greatest advantage of replacing the ε value with the ω value is that this ω value is easier to integrate. It does not need additional damping functions to integrate. The k-ω model also depends on the ε value for the ω value. Both can be applied for turbulent boundary layers. Both has two extra equations.