Question

What are the independent variables in the Navier-Stokes equations?

(a) x, y, z, ρ

(b) x, y, z, τ

(c) x, y, z, t, ρ

(d) x, y, z, t

The question was asked in homework.

I need to ask this question from Navier Stokes Equation topic in section Governing Equations of Fluid Dynamics of Computational Fluid Dynamics

Answer 1

Correct choice is (d) x, y, z, t

To explain I would say: There are four independent variables in Navier-Stokes equations. Three spatial variables (x, y, z) and one time variable (t).