Question

These are essential for solving partial differential equations.

(a) Boundary conditions

(b) Physical principle

(c) Mathematical model

(d) Algebraic equations

This question was posed to me during a job interview.

Question is taken from Partial Differential Equation in division Mathematical Behaviour of Partial Differential Equations of Computational Fluid Dynamics

Answer 1

Right answer is (a) Boundary conditions

The best explanation: The analytical solutions of partial differential equations depend upon boundary conditions and this is employed in CFD to some extent. Though the same PDE is solved, the solutions may differ based on the boundary conditions.