Propagation of strong and intensely-radiating shock waves in helium of normal density
Abstract
An attempt to theoretically predict the luminance temperature of radiating shock waves in He is presented. Attention is focused on the radiation gasdynamics of the structure and luminance of shock waves at temperatures less than 1,000,000 K. Account is taken of the photoelectric effect, ground and excited states of the He atom and ion, bremsstrahlung, and line emission and absorption. Numerical solutions are generated for the transport equation covering 500 spectral intervals and 24 directional rays, and temperature distributions were computed as a function of the distance between the piston and the shock wave. The temperature at the piston consistently stays below that at the shock adiabat. At 70 m/sec or greater the brightness temperature at visible wavelengths exceeds the temperature at great distances from the shock front due to absorption in the layer.
- Publication:
-
Heat Transfer Soviet Research
- Pub Date:
- October 1982
- Bibcode:
- 1982HTSR...14..107B
- Keywords:
-
- Gas Density;
- Helium;
- Propagation Velocity;
- Radiative Transfer;
- Shock Wave Propagation;
- Brightness Temperature;
- Gas Dynamics;
- Gas Spectroscopy;
- Luminance;
- Fluid Mechanics and Heat Transfer