Question

The flows in which all the flow parameters are the function of ‘x’ is called as _________

(a) 3D flow

(b) 2D flow

(c) Quasi 1D flow

(d) Quasi 2D flow

The question was posed to me by my college director while I was bunking the class.

This intriguing question comes from Incompressible Flow in Duct topic in chapter Inviscid & Incompressible Flow of Aerodynamics

Answer 1

Correct answer is (c) Quasi 1D flow

The explanation: Generally, the flow field properties are uniform across any cross section and hence, they vary only in x-direction. All the flow parameters are assumed to be the function of x. A=A(x), V=V(x), p=p(x) and since they vary only in one direction they are called quasi 1D flow.