Question

The governing equations of CFD are ____________ partial differential equations.

(a) Linear

(b) Quasi-linear

(c) Non-linear

(d) Non-homogeneous

This question was addressed to me during an interview for a job.

I'm obligated to ask this question of Partial Differential Equation topic in portion Mathematical Behaviour of Partial Differential Equations of Computational Fluid Dynamics

Answer 1

The correct choice is (b) Quasi-linear

To elaborate: The governing equations of CFD are quasi-linear partial differential equations. They have their highest order terms linearly and the coefficients are functions of the dependent variables itself.