Basic Relationships¶

 import minuteman.cpg.base

Base compressible flow relations.

Low-level API¶

mach_number(velocity: ArraylikeFloat, speed_of_sound: ArraylikeFloat) -> NDArrayFloat

Compute Mach number, \(M\)

Parameters:

Returns:

speed_of_sound_by_pressure(
    pressure: ArraylikeFloat, density: ArraylikeFloat, specific_heat_ratio: ArraylikeFloat
) -> NDArrayFloat

Compute the speed of sound \(a\) from the pressure \(p\) and density \(\rho\)

Parameters:

pressure (ArraylikeFloat) –

pressure, \(p\)
density (ArraylikeFloat) –

density, \(\rho\)
specific_heat_ratio (ArraylikeFloat) –

ratio of specific heats, \(\gamma\)

Returns:

speed_of_sound_by_temperature(
    gas_constant: ArraylikeFloat, temperature: ArraylikeFloat, specific_heat_ratio: ArraylikeFloat
) -> NDArrayFloat

Compute the speed of sound from the specific gas constant \(R\) and temperature \(T\)

Parameters:

gas_constant (ArraylikeFloat) –

specific gas constant, \(R\)
temperature (ArraylikeFloat) –

temperature \(T\)
specific_heat_ratio (ArraylikeFloat) –

ratio of specific heats, \(\gamma\)

Returns:

Arraylike of FlowSpeedRegime objects

Bases: Enum

Is flowfield subsonic or supersonic

Subsonic flow, \(M < 1\)

Supersonic flow, \(M > 1\)