Question

In the momentum equation for the correction field, which of these terms are neglected?

(a) Neighbouring correction terms

(b) All the coefficients

(c) The source terms

(d) The velocity terms

I have been asked this question in semester exam.

The origin of the question is Incompressible Flows topic in portion Incompressible Flows & Compressible Flows of Computational Fluid Dynamics

Answer 1

Right choice is (a) Neighbouring correction terms

Easy explanation: The discretized momentum equation is rewritten for the initial guesses. Now, the correction is introduced into this equation and the correction equations are formed. In these correction equations, the corrections for the neighbouring terms are omitted. This is applicable as it does not make any changes globally.