| 凝胶推进剂锥形管道流动特性数值分析 |
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| 引用本文： | 刘国庆,蔡体敏,夏学礼,强洪夫.凝胶推进剂锥形管道流动特性数值分析[J].固体火箭技术,2009,32(2). |
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| 作者姓名： | 刘国庆 蔡体敏 夏学礼 强洪夫 |
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| 作者单位： | 1. 西北工业大学航天学院,西安,710072
2. 第二炮兵工程学院201室,西安,710025 |
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| 摘 要： | 对凝胶推进剂在锥形圆管中的流动过程进行了数值计算,研究了锥形圆管收敛角对轴向速度、平均表观粘性、压降的影响关系,得到了凝胶推进荆在锥形圆管中的轴向速度与平均表观粘性分布.计算结果表明,随着收敛角的增大,出、入口截面平均表观粘性降低幅度不断增大,出口截面平均表观粘性不断减小至近牛顿粘性水平ηoo;并且,粘性的减小是以增大压降需求为前提的,当角度改变达某定值之后,角度的改变引起粘性的变化将不再显著.结果表明,圆管收敛角是影响粘性变化的一个重要参数,粘性变化与压降需求之间存在最佳结合点.
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| 关 键 词： | 凝胶推进剂 锥形管道 流动特性 数值分析 |
Numerical analysis on flow property of gel propellants in tapered round pipes |
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| LIU Guo-qing,CAI Ti-min,XIA Xue-li,QIANG Hong-fu.Numerical analysis on flow property of gel propellants in tapered round pipes[J].Journal of Solid Rocket Technology,2009,32(2). |
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| Authors: | LIU Guo-qing CAI Ti-min XIA Xue-li QIANG Hong-fu |
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| Institution: | LIU Guo-qing~1,CAI Ti-min~1,XJA Xue-li~2,QIANG Hong-fu~2 (1.College of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China,2.The Second Artillery Engineering Academy No.201 Faculty,Xian 710025,China) |
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| Abstract: | The flow process of gel propellants in tapered round pipes was numerically simulated.The effect of the tapered round pipe convergence angle on the axis velocity,mean apparent viscosity and pressure drop was studied.The axis velocity and mean apparent viscosity fields of gel propellants in tapered round pipes were obtained.The results show that the decrementof the mean apparent viscosity in the outlet and the inlet increases with the increasing of convergence angle.The mean apparent viscosity of the outlet d... |
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| Keywords: | gel propellants tapered round pipes flow property numerical analysis |
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