Question

The Second Order Upwind (SOU) scheme uses ____________

(a) asymmetric linear profile

(b) symmetric linear profile

(c) asymmetric quadratic profile

(d) symmetric quadratic profile

I have been asked this question by my school teacher while I was bunking the class.

I'm obligated to ask this question of Convection-Diffusion Problems topic in chapter Convection-Diffusion Problems of Computational Fluid Dynamics

Answer 1

The correct choice is (a) asymmetric linear profile

To explain: The second order upwind scheme, like the central difference scheme, uses a linear profile. But, unlike the central differencing scheme, it uses an asymmetric linear profile. This is why it got the name upwind scheme.