Question

Dual cell or dual mesh method is used to __________

(a) create boundary elements

(b) create elements around a vertex

(c) create cell-centred arrangement

(d) create boundary faces

The question was asked at a job interview.

The query is from Variable Arrangement in FVM topic in chapter Finite Volume Methods of Computational Fluid Dynamics

Answer 1

Correct choice is (b) create elements around a vertex

The explanation is: In the vertex-centred arrangements, elements are created around the vertices by joining either their centroids or their centroids with the face-centroids. This method of forming the vertex-centred arrangement is called dual cell or dual mesh method.