Question

The hybrid differencing scheme is a combination of ____________ and ___________

(a) upwind and downwind schemes

(b) downwind and central difference schemes

(c) central difference and upwind schemes

(d) two types of central difference schemes

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

The query is from Convection-Diffusion Problems topic in chapter Convection-Diffusion Problems of Computational Fluid Dynamics

Answer 1

Right answer is (c) central difference and upwind schemes

Easiest explanation: Hybrid differencing scheme was introduced by Spalding in 1970s. It is the hybrid between upwind and central differencing schemes so that the advantages of both of these schemes is utilized.