【摘要】：用計(jì)算流體力學(xué)(CFD)數(shù)值模擬和理論方法對高超聲速可壓縮湍流中粗糙壁面熱增量進(jìn)行研究.著重考慮粗糙單元密度和粗糙單元形狀對粗糙表面熱流的影響.結(jié)果表明:1粗糙單元密度變化時(shí),CFD數(shù)值方法計(jì)算所得的粗糙單元等效熱流隨著粗糙單元密度的降低而增加,理論方法預(yù)測結(jié)果的規(guī)律隨方法不同而不同;2在相同粗糙單元密度和高度時(shí),如果粗糙單元形狀改變,CFD計(jì)算結(jié)果也隨之發(fā)生改變.理論預(yù)測方法所得結(jié)果不發(fā)生變化.
[Abstract]:The thermal increment of rough wall in hypersonic compressible turbulence is studied by computational fluid dynamics (CFD) numerical simulation and theoretical method. The effects of rough element density and rough element shape on heat flow on rough surface are considered. The results show that: (1) when the density of rough element changes, the equivalent heat flow of rough element calculated by CFD numerical method increases with the decrease of rough element density, and the prediction results of theoretical method vary with different methods. (2) when the density and height of rough element change, the CFD calculation results also change if the shape of rough element changes. The results obtained by the theoretical prediction method do not change.
【作者單位】： 中國航天空氣動(dòng)力技術(shù)研究院;
【分類號(hào)】：O354.4
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本文編號(hào)：2522702