Question

If a finite element model involves the natural and direct formulation of momentum and continuity equations, then it is known as the velocity-pressure formulation or mixed formulation.

(a) True

(b) False

This question was posed to me by my college director while I was bunking the class.

This intriguing question originated from Governing Equations in portion Flows of Viscous Incompressible Fluids of Finite Element Method

Answer 1

The correct option is (a) True

Easiest explanation: There are two different finite element models of momentum and continuity equations. The first one is a natural and direct formulation of momentum and continuity equations. It is known as the velocity-pressure formulation or mixed formulation. The second model is based on the interpretation that the continuity equation is an additional relation among the velocity components.