Numerical model for non-equilibrium shock tube flow
An efficient method is developed for calculating the non-equilibrium properties of the test gas in a shock tube. The method is based on the parabolised Navier-Stokes equations, resulting in a form similar to a stagnation line problem but with appropriate consideration of the mass loss to the boundar...
| Main Authors: | , , , |
|---|---|
| Format: | Conference item |
| Language: | English |
| Published: |
2022
|
| Summary: | An efficient method is developed for calculating the non-equilibrium properties of the test gas in a shock tube. The method
is based on the parabolised Navier-Stokes equations, resulting in a form similar to a stagnation line problem but with appropriate
consideration of the mass loss to the boundary layer present in a shock tube. Gas properties are determined using Park’s two
temperature model. Transport properties are evaluated using second order Chapman-Enskog theory. The centreline solution
is coupled to an artificial radial pressure profile which mimics the effect of a boundary layer. The effect of shock structure
for a non-equilibrium flow within a shock tunnel is shown to substantially impact the test gas properties and non-equilibrium
radiance profiles in the UV/Vis and Vis/IR regions. |
|---|