Studies on Control of Shock-Induced Separation Using Nonequilibrium Condensation

非平衡凝聚控制激波分离的研究

• 批准号: 08650214
• 负责人: SETOGUCHI Toshiaki
• 金额: $ 1.41万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650214/
• 关键词: Nonequilibrium condensation; Condensation shock; Compressible flow; Shock wave; Boundary layr; Separation; Pressure fluctuation; Flow control; 湿り空気; 超音速流れ; 液滴

The effects of condensation produced by the expansion of moist air in a supersonic nozzle and in transonic nozzle with circular bump model on the flow fields with shock wave were investigated experimentally and numerically. As a result, it is found that in case with condensation, the turbulence and boundary layr thickness behind shock waves become small in comparison with without condensation. Furthermore, condensation influences strongly the position of the shock wave relative to the shock wave relative to the condensation zone and there are three patterns for the relation between the location of the nonequilibrium condensation zone and shock waves for different initial degrees of supersaturation. These facts means that the nonequibrium condensation is an effective method to suppress the shock-induced separation.

研究了湿空气在超声速喷管和圆形凹凸模型跨声速喷管内膨胀产生的凝结对激波流场的影响。结果发现，在有凝结的情况下，激波后湍流和边界层厚度比没有凝结时变小。此外，冷凝对激波相对于激波相对于冷凝区的位置有强烈的影响，对于不同的初始过饱和程度，非平衡冷凝区的位置与激波的关系有三种模式。这说明非平衡冷凝是抑制激波分离的有效方法。

项目成果

Shigeru Matsuo: "Effect of Nonequilibrium Condensation of Moist Air on the Boundary Layer in a Supersonic Nozzle" Journal of Thermal Science. 6. 260-272 (1997)

Shigeru Matsuo：“湿空气非平衡冷凝对超音速喷嘴边界层的影响”热科学杂志。

S.Matsuo: "Effect of Nonequilibrium Condensation on the Flow Fields in a Supersonic Nozzle" Proceedings of Japanese Society of Mechanical Engineers. No.988-1. 249-251 (1998)

S.Matsuo：“非平衡冷凝对超音速喷嘴流场的影响”日本机械工程师学会会议录。

瀬戸口 俊明: "非平衡凝縮が超音速流れ場に及ぼす影響" 平成8年度衝撃波シンポジウム講演論文集. 61-64 (1997)

Toshiaki Setoguchi：“非平衡凝结对超音速流场的影响”1996 年冲击波研讨会论文集 61-64 (1997)。

Shigeru Matsuo: "Effect of Nonequilibrium Condensation of Moist Air on the Boundary Layer in a Supersonic Nozzle" Journal of Thermal Science. Vol.6,No.4. 260-272 (1997)

Shigeru Matsuo：“湿空气非平衡冷凝对超音速喷嘴边界层的影响”热科学杂志。

Toshiro Nakano: "Effect of Condensation on Flow Fieldes in a Supersonic Nozzle" Proceedings of the 5th Asian Symposium on Visualization(to be presented in Indonesia). (1998)

Toshiro Nakano：“Effect of Condensation on Flow Fieldes in a Supersonic Nozzle”第五届亚洲可视化研讨会论文集（将在印度尼西亚发表）。