Programming Reference Manual

Version 1.0 DD-00008-110

These functions compute the thermodynamic properties across a normal shock wave, assuming a calorically perfect gas and an adiabatic and frictionless flow, as described in [naca1135]. It can compute the following set of properties given one of the properties in conjunction with a specific heat ratio of the gas medium.

The following equations govern normal shock waves as implemented in the function group:

Equation of Mass

Equation of Momentum

Equation of Energy

Normal Shock Waves are classified by the following properties, where the subscript refers to upstream and downstream, respectively.

The following properties are computed:

I | Property | Description |

1 | Upstream mach number | |

2 | Downstream mach number | |

3 | Pressure ratio | |

4 | Density ratio | |

5 | Temperature ratio | |

6 | Stagnation pressure ratio | |