| 多机并联火箭羽流流场及其底部热环境分析 |
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| 引用本文： | 杨岩,田原,丁兆波,杨进慧.多机并联火箭羽流流场及其底部热环境分析[J].宇航学报,2021,42(11):1446-1452. |
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| 作者姓名： | 杨岩 田原 丁兆波 杨进慧 |
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| 作者单位： | 北京航天动力研究所, 北京 100076 |
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| 摘 要： |
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| 关 键 词： | 多机并联 火箭 羽流 流场 热环境 |
| 收稿时间： | 2020-12-18 |
Analysis of Plume Flow Field and Base Heating Environment of Multi engine Cluster Rocket |
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| YANG Yan,TIAN Yuan,DING Zhao bo,YANG Jin hui.Analysis of Plume Flow Field and Base Heating Environment of Multi engine Cluster Rocket[J].Journal of Astronautics,2021,42(11):1446-1452. |
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| Authors: | YANG Yan TIAN Yuan DING Zhao bo YANG Jin hui |
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| Affiliation: | Beijing Aerospace Propulsion Institute, Beijing 100076, China |
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| Abstract: | For the problem that the plume flow field structure of a multi engine parallel rocket is complicated and the bottom thermal environment is extremely harsh, which may cause the failure of the engine structural components, the plume flow field and thermal environment at different altitudes are studied through numerical simulation. The result is compared with the measured results in flight which shows that when the rocket is flying at a low altitude, the plume of the engines do not interfere with each other. As the flight altitude increases, the plumes gradually expand and begin to interfere with each other, and finally there is an obvious backflow at the bottom of the rocket. The maximum heat flux at the moment of take off is basically the same as the measured value in flight. Before the backflow occurs, the heat flux mainly consists of radiant heat, the convective heat flow increases as the flight altitude grows, but it is also much smaller than the peak heat flow at takeoff. The result has certain guiding significance for the optimal design of engine structure thermal protection. |
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| Keywords: | Multi engine Rocket Plume Flow field Heating environment |
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