| 火箭喷管内三维非对称流场的数值模拟研究 |
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| 引用本文： | 武晓松,王政时,季宗德.火箭喷管内三维非对称流场的数值模拟研究[J].推进技术,1997,18(2):6-10. |
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| 作者姓名： | 武晓松 王政时 季宗德 |
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| 作者单位： | 南京理工大学机械学院!南京，210094 |
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| 摘 要： | 利用特征线方法数值模拟了双圆弧和抛物线两种特型喷管中的三维非对称定常等熵的超时速流场。计算出的喷侧向力数据与实验结果吻合。沿喷管轴线方向，侧向力曲线具有明显的摆动特性，且在轴线上存在着零点。
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| 关 键 词： | 火箭发动机 喷管 流动分布 特征线法 数值模拟 |
NUMERICAL SIMULATION OF THREE-DIMENSIONAL NON-SYMMETRICAL FLOW IN ROCKET NOZZLES |
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| Wu Xiaosong,Wang Zhengshi and Ji Zongde.NUMERICAL SIMULATION OF THREE-DIMENSIONAL NON-SYMMETRICAL FLOW IN ROCKET NOZZLES[J].Journal of Propulsion Technology,1997,18(2):6-10. |
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| Authors: | Wu Xiaosong Wang Zhengshi and Ji Zongde |
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| Institution: | School of Mechanics, Nanjing Univ. of Science and Technology, Nanjing, 210094;School of Mechanics, Nanjing Univ. of Science and Technology, Nanjing, 210094;School of Mechanics, Nanjing Univ. of Science and Technology, Nanjing, 210094 |
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| Abstract: | Numerical simulation of three-dimensional, steady, isentropic, non-symmetrical flow in rocket nozzles is completed using a bicharacteristic method. Side forces of two nozzles are obtained,the nozzle contours are double-cicular and parabolic respectively with same rate of expansion. The oscillatory nature of the side forces is evident, and zero points at which the magnitude of the side force is zero exist along the axis of nozzle. The analysis shows that the side force of the double-circular nozzle oscillates more rapidly and has a shorter distance between two zero Points than that of the parabolic nozzle. |
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| Keywords: | Rocket engine nozzle Unconventional nozzle Flow distribution Method of characteristic curve Numerical simulation |
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