Question

The mathematical model is based on ____________

(a) physical principles and assumptions

(b) physical principles

(c) flow model

(d) flow model and assumptions

The question was posed to me in unit test.

My question comes from Numerical Methods topic in portion Numerical Methods of Computational Fluid Dynamics

Answer 1

The correct option is (a) physical principles and assumptions

To explain I would say: For generating the mathematical model, first of all, the physical principles which are applicable to the given flow should be taken. Along with these some assumptions also must be made to make the model suit the mathematical solution. These assumptions result in modelling errors.