Question

What is the expansion of FANS method?

(a) Favre Averaged Navier-Stokes equations

(b) Fully Averaged Navier-Stokes equations

(c) Favre Averaged Numerical Simulation

(d) Fully Averaged Numerical Simulation

I have been asked this question in examination.

My question is taken from Turbulence Modelling in division Turbulence Modelling of Computational Fluid Dynamics

Answer 1

The correct answer is:

(a) Favre Averaged Navier-Stokes equations

FANS stands for Favre Averaged Navier-Stokes equations. It is a method used in turbulence modeling, where the governing equations are averaged with respect to a specific filter function (Favre averaging). This approach is particularly useful in compressible flow simulations, where the Favre averaging provides a better representation of the fluctuating quantities, especially when the flow involves high-density variations.