| 调压阀内流场数值模拟及动态特性分析 |
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| 引用本文： | 李哲,魏志军,张平. 调压阀内流场数值模拟及动态特性分析[J]. 北京理工大学学报, 2007, 27(5): 390-394 |
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| 作者姓名： | 李哲 魏志军 张平 |
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| 作者单位： | 北京理工大学,宇航科学技术学院,北京,100081;北京理工大学,宇航科学技术学院,北京,100081;北京理工大学,宇航科学技术学院,北京,100081 |
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| 摘 要： | 以研究调压阀内流场和动态特性为目的,建立了固体燃气发生器调压阀内流场三维模型,用动态网格技术对流场进行模拟并采用子程序计算阀芯的运动,以相关的冷气试验进行验证.分析了燃气阀内部收敛-扩张外型下的瞬态流动特性和波系变化情况,并分析了不同条件下阀芯运动的动态特性.阀芯的周期性振动导致流场以相同频率变化,较高入口压力和较小弹性系数使阀门能够较快稳定,但导致流量、阀芯位移等物理量峰值增大.
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| 关 键 词： | 燃气阀 内流场 动态网格 动态特性 |
| 文章编号： | 1001-0645(2007)05-0390-05 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2006-09-14 |
Internal Flow Field Numerical Calculation and Dynamic Characteristic Study of Pressure-Regulating Valve |
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| LI Zhe,WEI Zhi-jun and ZHANG Ping. Internal Flow Field Numerical Calculation and Dynamic Characteristic Study of Pressure-Regulating Valve[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2007, 27(5): 390-394 |
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| Authors: | LI Zhe WEI Zhi-jun ZHANG Ping |
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| Affiliation: | School of Aerospace Science and Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | For studying the internal flow field and dynamic characteristics of pressure-regulating valve,its 3-D model is established.Adopting dynamic mesh and subroutine were calculated the internal flow field and movement of the pintle and the result was tested by cold gas experiment.The characteristics of unsteady flow field and shock wave was analysed.Dynamic characteristics of the pintle in some different instances were analysed.The flow field periodically changes because of the vibration of pintle.High inlet-pressure or low pring coefficient can make the flow field to have vehemently motorial pintle steady faster but higher peak value in some quantities,such as the flow rate or displacement of the pintle. |
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| Keywords: | hot gas valve internal flow field dynamic mesh dynamic characteristics |
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