Monte Carlo Simulation of Plumes Spectral Emission

Abstract

Abstract : Methods of spectral diagnostics of nonhomogeneous volumes of heated gases are the most challenging for investigation of exhaust plumes of the hydrogen and carbon-hydrogen fuels. Computing methods of calculation of spectral heat radiation emissivity are the components of the general problem. The numerical simulation of plumes radiation is a challenging problem because there is a large number of different factors which characterize the phenomena of the spectral radiation transfer in the multiphase flows. There have been many previous computational simulations of liquid and solid rocket motor plumes radiation signatures using a wide range of computational methods and models. There is a large practical need for new methods of calculation of selective radiation heat transfer, allowing to take into account rotary structure of a molecular spectrum. There is also a need to provide a capability of comparative analysis of different methods. This paper seeks to meet these needs through comparison of numerical simulations. This project has a basic research character, because computing models and codes may be used not only for aerospace applications but also for astrophysics, optics of atmosphere, physics and chemistry of the low-temperature plasma, etc.