D315 中極超音速熱化学非平衡流における振動-解離連結モデルに関する研究

概要

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Thermochemical models that are suitable for intermediate hypersonic flows (2.5-4.5km/s) are needed for developing space launch systems using air-breathing engines. Our previous studies have revealed that, for vibrationally highly excited states in this flow regime, the accuracy of the existing two-temperature model is degraded considerably particularly when dissociation reactions are initiated. In this study, the vibration-dissociation coupling effect in the two-temperature model of Park is investigated through 1) changing the definition of the controlling temperature of the dissociation reactions, and 2) changing the amount of disposal of the energy in the preferential dissociation. The shock standoff distances for a sphere in the intermediate hypersonic regime are calculated and compared with the corresponding ballistic range data for validation. It is found that the shock standoff distance is insensitive to both of 1) and 2) in this flight regime.
日本流体力学会の論文
2000-07-25