Given specific free stream conditions (P, V, T), mppshock computes the Rankine-Hugoniot relations and the relaxed, equilibrium thermodynamic state and velocity. The Rankine-Hugoniot relations are an expression of the conservation of mass, momentum and energy and, since chemically reacting mixtures are treated the chemical composition is assumed to be frozen across the shock. In the post shock region the mixture relaxes and the local thermodynamic equilibrium is reached (Equilibrated). Two available numerical methods are available in mppshock for calculating this post shock state, the bisection and the Newton-Raphson method. The first one has increased robustness, but is significantly slower than the Newton-Raphson algorithm.
Usage: mppshock [OPTIONS] mixture
-h, --help prints this help message
-P Free stream pressure range in Pa (default: 1 atm)
-T Free stream temperature range in K (default: 300 K)
-V Free stream velocity range in m/s (default: 10000 m/s)
-m Solution algorithm; 0: Bisection - 1: Newton-Raphson (default)
Example: mppshock -P 1000 -V 10000 -T 300 -m 1 air_5 Pressure (Pa) Velocity (m/s) Temperature (K)
Free Stream: 1000.0 10000.0 300.0
Rankine-Hugoniot: 964161.6 1672.7 48382.6
Equilibrated: 1070709.9 751.5 12110.0