Abstract
This chapter presents a parallel finite-difference method for the numerical analysis of influence of radiation on gasdynamics flows. The objective is to develop a stable and converging method for calculating a strongly radiating axisymmetric flowfield over a blunt body. An algorithm is presented for radiative transfer calculations coupled with hypersonic flow computations. The high-performance parallel computer systems were used to reproduce a flow structure in a reasonable computation time. The radiative transport problem is considered for air. Spectrum is divided into ten frequency groups. The diffusion approach is used to describe the radiation field. Parallel code is constructed using the domain decomposition technique. To estimate the radiation heating rate for hypersonic vehicles entering the earth atmosphere, a numerical code was developed. The numerical method was realized as a parallel program. The geometrical parallelism, the parallel conjugate gradient method, and explicit scheme were applied for realization of the code. Numerical results show that it is necessary to take into account the influence of radiation to the gas dynamical surroundings.
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