1715 大型アーク加熱風洞の気流予測における乱流モデルの影響に関する一考察(OS17-3 超音速流と衝撃波,オーガナイズドセッション)

概要

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Turbulent plasma flow in a large-scale arc heater was numerically investigated and the distributions of the arc-heated flow-field properties were successfully obtained. The turbulent flow field was described by the Navier-Stokes equations with a multi-temperature model, tightly coupled with the electric-field and radiation-field calculations. As for radiation and turbulence models, an accurate and low-cost radiation model and a low-Reynolds number two-equation turbulence model were introduced into the flow-field simulation. It was confirmed that the plasma flow inside the arc-heating facilities was in a state of high nonequilibrium in the expansion section and the arc discharge plays a critical role in the heating section. It was quantitatively clarified that the radiation and turbulence phenomena were very important mechanisms to transfer heat and momentum from high-temperature flow near the core to cold gas region near the facility wall.
一般社団法人日本機械学会の論文
2010-10-29