Question

According to the Newtonian model for fluid flow, what is the coefficient of pressure at the rear of the surface while free stream flows horizontally towards it?

(a) One

(b) Zero

(c) Infinity

(d) 0.5

The question was posed to me in a job interview.

I'd like to ask this question from Time-Marching Technique topic in portion Time-Marching Technique of Aerodynamics

Answer 1

The correct choice is (b) Zero

To explain: The Newtonian model for fluid flow is only able to predict the coefficient of pressure in the frontal region of the surface where the free stream impacts the body. The portion which does not experience any impact from the incoming flow is known to be in the shadow which has zero coefficient of pressure.