Abstract
A multi-group spectral method is integrated into an interdisciplinary computational physics formulation for nonequilibrium hypersonic flows. The developed simulation capability has been successfully applied first to study the Stardust capsule earth reentry via an axisymmetric approximation. Then the three-dimensional calculations of radiative heating for the capsule duplicating the flight condition are performed at an angle of attack of 8 o on six stages of earth reentry trajectory. Radiative heat transfer is calculated by the radiation intensity equation including the most dominant radiative mechanisms of absorption and emission. The aerodynamic and radiative interaction is found to be accentuated at the initial reentry stage to alternate the thermodynamic condition and standoff distance of the shock layer over the Stardust capsule. The computational results agree very well with data in literature and bring new insights into the interdisciplinary fluid dynamics.
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