| 基于数值模拟的轴对称矢量喷管内流特性研究 |
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| 引用本文： | 邵万仁.基于数值模拟的轴对称矢量喷管内流特性研究[J].航空动力学报,2008,23(5):822-829. |
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| 作者姓名： | 邵万仁 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100083;中国航空工业第一集团公司,沈阳发动机设计研究所,沈阳,110015 |
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| 摘 要： | 采用三维有粘定常程序计算了轴对称矢量喷管的内流特性,研究了尺寸缩比、冷热态的影响,并与冷态缩比模型矢量特性试验结果进行了对比;给出了设计工况的内流特性,讨论了几何矢量角、喷管落压比对内流特性的影响.研究结果表明,尺寸缩比、冷热态对内流特性的影响均很小,冷态缩比模型试验结果可以真实地反映设计工况的内流特性,轴对称矢量喷管在设计工况下具有良好的内流特性,并且几何矢量角、喷管落压比对内流特性均有影响.
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| 关 键 词： | 航空、航天推进系统 轴对称矢量喷管 内流特性 数值模拟 |
| 文章编号： | 1000-8055(2008)05-0822-08 |
| 收稿时间： | 2007/5/16 0:00:00 |
| 修稿时间： | 2007年5月16日 |
Study of internal performance for an axisymmetric vectoring exhaust nozzle using numerical simulation |
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| SHAO Wan-ren.Study of internal performance for an axisymmetric vectoring exhaust nozzle using numerical simulation[J].Journal of Aerospace Power,2008,23(5):822-829. |
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| Authors: | SHAO Wan-ren |
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| Abstract: | A numerical simulation of internal performance for an axisymmetric vectoring exhaust nozzle was conducted by applying a 3-D viscous flow program.The effects of model scale and flow temperature on the results of simulation were investigated and the results of the simulation were compared to those of scale model experiments.The internal performance of a real engine in design condition was obtained and the effects of different geometrical angles and nozzle pressure ratios(NPR) on it were discussed.The investigation shows that: model scale and flow temperature have little effect on the internal performance;the results of scale model experiments can truly represent the internal performance of a real engine in design condition;the axisymmetric vectoring exhaust nozzle has excellent internal performance in design condition;and both geometrical angle and NPR affect the internal performance. |
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| Keywords: | aerospace propulsion system axisymmetric vectoring exhaust nozzle internal performance numerical simulation |
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