Compressible Flow Subroutine Library
Programming Reference Manual
Version 1.0 DD-00008-010E

3.11.1 Introduction

This function group computes the thermodynamic properties of an oblique shock wave given either a mach number and the surface deflection or wave angle or based upon both the wave and deflection surface angles, using algorithms as described in [usafv1], [naca1135] and [NASA187173].

Oblique Shock Waves are classified by the following properties, where the subscript 1,2  refers to upstream and downstream, respectively. The normal mach numbers M1n and M2n represent the mach numbers through the shock front as by the normal shock wave equations.

The following properties will be available:

Table 9: Oblique shock properties



I Property Description



1 M1   Upstream mach number
2 M2   Downstream mach number
3 M1n Normal upstream mach number
4 M
 2n Normal downstream mach number
5 θ Deflection surface angle (◦ )
6 δ Wave angle (◦ )
7 p2/p1   Pressure ratio
8 ρ2/ρ1   Density ratio
9 T2/T1   Temperature ratio
10 p02/p01   Stagnation pressure ratio