| 塞式喷管流场变化对性能的影响 |
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| 引用本文： | 戴梧叶,刘宇,张正科,覃粒子,王一白.塞式喷管流场变化对性能的影响[J].宇航学报,2001,22(4):20-26. |
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| 作者姓名： | 戴梧叶 刘宇 张正科 覃粒子 王一白 |
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| 作者单位： | 北京航空航天大学宇航学院, |
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| 基金项目： | 国家863-2高技术航天领域[863-2-3-4-10]和国家自然科学基金资助项目[59786001];获奖情况:国防科学技术二等奖(编号:2000GFJ2203) |
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| 摘 要： | 为了更清楚塞式喷管的注以动机理以便合理的设计塞式喷管，本文从N－S方程出发，采用NND格式对塞式喷管的流场进行了数值模拟。重点研究了塞式喷管在高低空注以场的发展和外流对塞锥流场及其性能的影响。研究表明，在设计高度以下，塞式喷管的高度补偿作用很在,并且外流对塞式喷管影响很大，而在设计高度以上，塞式喷管的补偿作用消失，而外流的影响同样可以忽视。
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| 关 键 词： | 火箭发动机 数值模拟 塞式喷管 外流干扰 流场变化 性能 |
| 文章编号： | 0253-4177(2001)08-0020-07 |
| 修稿时间： | 2001年1月8日 |
THE EFFECT OF FLOW FIELD CHANGING ON LINEAR PLUG NOZZLE |
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| Dai Wuye,Liu Yu,Zhang Zhengke,Qin Lizi,Wang Yibai.THE EFFECT OF FLOW FIELD CHANGING ON LINEAR PLUG NOZZLE[J].Journal of Astronautics,2001,22(4):20-26. |
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| Authors: | Dai Wuye Liu Yu Zhang Zhengke Qin Lizi Wang Yibai |
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| Abstract: | To understand the flow field structure around plug nozzle and to develop appropriate methodology for designing plug nozzle contour,numerical simulations of the flow field around linear plug nozzle were performed.The numerical simulations were completed based on N S equations with NND scheme.It indicates that the altitude compensation for plug nozzle is very strong and that the free stream changes the flow field very much when aerospike nozzle is under some altitude.However,when the flight altitude is higher than the design altitude,the altitude compensation disappears and the effect of free stream on aerospike nozzle can be ignored. |
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| Keywords: | Rocket engine Numerical simulation Plug nozzle Free stream |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
