Question

In a two-dimensional flow, the algebraic equation of an element relates the element with ___________

(a) its face centres

(b) its vertices

(c) its faces

(d) its neighbours

Answer 1

The correct choice is (d) its neighbours

Easiest explanation: Each element in a mesh has its own algebraic equation. This algebraic equation has the coefficients of the neighbouring elements too. This way, the elements are connected to their neighbours by these algebraic equations.