Question

The total temperature across the normal shock wave is constant. Which statement gives the wrong reason for this?

(a) Adiabatic flow across normal shock wave

(b) Normal shock wave has an isentropic flow

(c) Calorifically perfect gas

(d) Thermal dissipation there

I got this question in quiz.

I want to ask this question from Flow Compressible topic in chapter Normal Shock Waves of Aerodynamics

Answer 1

The correct option is (d) Thermal dissipation there

The best explanation: The flow across the normal shock wave is isentropic i.e. it is adiabatic also. Since, we are concerned with calorically perfect gases in an adiabatic, inviscid, steady flow the total temperature remains constant. Thermal dissipation is not a reason for total temperature being constant.