Question

Which of these statements is correct about the Arbitrary Lagrangian-Eulerian method?

(a) It produces non-converging pressure or velocity fields

(b) It produces inconsistent pressure or velocity fields

(c) It produces erroneous pressure or velocity fields

(d) It produces oscillatory pressure or velocity fields

The question was asked in exam.

This interesting question is from Incompressible Flows topic in portion Incompressible Flows & Compressible Flows of Computational Fluid Dynamics

Answer 1

Correct choice is (d) It produces oscillatory pressure or velocity fields

To elaborate: One of the main disadvantages of the Arbitrary Lagrangian-Eulerian method is the possibility of producing oscillatory pressure or velocity fields. It is advantageous only in some special cases.