Question

Substantial derivative = _____ + _____

(a) Partial derivative, convective derivative

(b) Local derivative, convective derivative

(c) Local derivative, partial derivative

(d) Total derivative, convective derivative

This question was addressed to me in homework.

I want to ask this question from Governing Equations topic in portion Governing Equations of Fluid Dynamics of Computational Fluid Dynamics

Answer 1

Right option is (b) Local derivative, convective derivative

Explanation: Substantial derivative is the addition of local derivative (based on fixed model) and convective derivative (based on motion of the model).