| 双组元姿控发动机反流特性的DSMC模拟 |
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| 引用本文： | 王平阳,鹿洪芳,程惠尔. 双组元姿控发动机反流特性的DSMC模拟[J]. 工程热物理学报, 2004, 25(4): 640-642 |
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| 作者姓名： | 王平阳 鹿洪芳 程惠尔 |
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| 作者单位： | 1. 上海交通大学机械与动力工程学院,上海,200030
2. 上海航天汽车机电股份有限公司,上海,201206 |
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| 基金项目： | 国家自然科学基金项目资助(No.50306013)，高校博士学科点专项基金资助项目(No.20010248024) |
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| 摘 要： | 为准确获得双组元姿控发动机的羽流及其反流特性,采用直接模拟蒙特卡罗(DSMC)方法结合可变软球(VSS)模型数值模拟以N2O4/MMH为推进剂的真空羽流。喷口参数由喷管流动的DSMC法计算得到。与文献比较表明本文计算程序可信。模拟结果表明,分子质量越小的气体越容易进入反流区;本文的计算条件下,在偏离X轴正向116°~140°范围内,组分数密度和质量流率以及温度均出现了最大值。
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| 关 键 词： | 姿控发动机 DSMC方法 数值模拟 真空羽流 反流 |
| 文章编号： | 0253-231X(2004)04-0640-03 |
| 修稿时间： | 2004-01-07 |
DSMC SIMULATION OF PLUME BACKFLOW FROM BIPROPELLANT ATTITUDE CONTROL ENGINE |
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| WANG Ping-Yang LU Hong-Fang CHENG Hui-Er. DSMC SIMULATION OF PLUME BACKFLOW FROM BIPROPELLANT ATTITUDE CONTROL ENGINE[J]. Journal of Engineering Thermophysics, 2004, 25(4): 640-642 |
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| Authors: | WANG Ping-Yang LU Hong-Fang CHENG Hui-Er |
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| Abstract: | Direct simulation Monte Carlo (DSMC) method in combination with the variable soft sphere (VSS) model was used to simulate vacuum plume backflow of N2O4/MMH. The parameters of the nozzle exit were gained from nozzle flow simulated by DSMC method. Comparison with those of previous work by others shows that the results of this paper are believable. The present results show light gases are more possible to enter the backflow zone. |
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| Keywords: | attitude control engine DSMC method numerical simulation vacuum plume backflow |
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