Paper
Nonequilibrium Radiation of Shock-Heated CH4-N2 Gas Mixture
- Authors:
- A.S. Dikalyuk; S.T. Surzhikov
- Abstract
- The computational model of nonequilibrium radiation of shock-heated gases is presented in this paper. In the model the flow in the relaxation zone behind the shock front is considered. The hydrodynamic description of the relaxation zone is performed in the framework of Euler system of equations. In the model equations of chemical kinetics and vibrational relaxation are solved. Also the energy balance equation for the temperature of electron gas calculation is included in the model. For the determination of the population of excited states of molecules the approach that we refer to as “hybrid collisional-radiative” is used. The “just-overlapping” line model is used for the calculation of radiative characteristics of shock-heated gases. The model is validated against the results of measurements of radiation in shock tube experiments performed on X2 facility.
- Keywords
- Nonequilibrium Radiation; Shock-Heated Gas Mixtures; Chemical Kinetics; Vibrational Relaxation
- StartPage
- 243
- EndPage
- 252
- Doi