This created a problem in modelling supersonic blunt nose.(a) Change of flow equations from elliptic to hyperbolic(b) High speed with high temperature(c) Supersonic Mach number(d) High temperaturesI had been asked this question in class test.Origin of the question is Applications in chapter Philosophy of Computational Fluid Dynamics of Computational Fluid Dynamics

This created a problem in modelling supersonic blunt nose.(a) Change o

1.	This created a problem in modelling supersonic blunt nose.(a) Change of flow equations from elliptic to hyperbolic(b) High speed with high temperature(c) Supersonic Mach number(d) High temperaturesI had been asked this question in class test.Origin of the question is Applications in chapter Philosophy of Computational Fluid Dynamics of Computational Fluid Dynamics
Answer» Correct option is (a) Change of flow equations from elliptic to hyperbolic The explanation is: STRAIGHT to the nose of the vehicle, the shock is normal. This results in a subsonic region and elliptic flow equations. But, downstream the shock is oblique which creates a supersonic region resulting in the elliptic EQUATION. This was the PROBLEM in modelling supersonic blunt nose. In LATER years this was overcome by a better model.

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