Question

The pressure correction equation is used to ensure _________

(a) energy conservation

(b) velocity conservation

(c) momentum conservation

(d) mass conservation

The question was asked in an interview.

My query is from Incompressible Flows topic in section Incompressible Flows & Compressible Flows of Computational Fluid Dynamics

Answer 1

The correct answer is (d) mass conservation

Best explanation: The pressure correction uses a pressure equation to make sure that mass is conserved at each time step. This is to get the correct solution from the assumed initial values at that time step.