环境压强对气动塞式喷管底部压强的影响

李军伟; 刘宇

环境压强对气动塞式喷管底部压强的影响

李军伟,
刘宇

北京航空航天大学宇航学院, 北京 100083

基金项目: 国家863高技术航天领域资助项目(863-2-3-4-10);高等学校博士学科点专项科研基金资助项目(2000000619)

详细信息

作者简介:
李军伟(1978-),男,河南漯河人,博士生, david78lee@sina.com.

中图分类号: V 430
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- 被引次数: 0
出版历程
- 收稿日期: 2002-06-28
- 网络出版日期: 2003-08-31

Influence of ambient pressure on aerospike nozzle base pressure

Li Junwei,
Liu Yu

School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 为了了解环境压强对塞式喷管底部压强的影响,利用隐式NND格式(Non-oscillation, No free coefficients Dissipative scheme)求解二维层流N-S方程,计算了在没有底部二次流和二次流质量流率为1.4%的情况下,不同环境压强时的底部压强.结果表明,随着环境压强的升高,底部压强也在增加,但在闭尾迹时增加缓慢,在开尾迹时,增加迅速,并可能出现波动.
- 火箭发动机 /
- 塞式喷管 /
- 底部压强 /
- 数值计算
Abstract: In order to understand the influence of ambient pressure on aerospike nozzle base pressure, the implicit NND(non-oscillation, no free coefficients dissipative) scheme was employed to solve 2-D laminar N-S equations. Aerospike nozzle flow fields under different C_NPR (i.e. nozzle pressure ratio) without base secondary flow and with secondary flow of 1.4% mass flux rate were obtained. The result shows that with the increase of ambient pressure, base pressure also increases. But under closed wake, the increase is slow; under open wake, the increase is rapid and even the pressure fluctuates.
- rocket engines /
- plug nozzles /
- base pressure /
- numerical computation

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参考文献(1)

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