Question

Which of these represent the discretization indexing?

(a) Φi,j+1, Φi,j-1

(b) Φe, Φw

(c) Φn+1, Φn-1

(d) Φi+1,j, Φi-1,j

I had been asked this question during an online interview.

I'd like to ask this question from FVM in section Finite Volume Methods of Computational Fluid Dynamics

Answer 1

The correct option is (b) Φe, Φw

The best I can explain: Discretization indexing is the type of indexing which is used locally while mentioning the neighbours of an element. Here, Φe is the eastern node; Φw is the western node; Φn is the northern node; Φs is the southern node.