| 空间润滑装置高压雾化喷嘴的喷雾特性 |
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| 引用本文： | 盛明伟,陈维山,刘军考.空间润滑装置高压雾化喷嘴的喷雾特性[J].西南交通大学学报,2011,46(4):671-675. |
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| 作者姓名： | 盛明伟 陈维山 刘军考 |
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| 作者单位： | 哈尔滨工业大学机器人技术与系统国家重点实验室,黑龙江哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金资助项目(50875057) |
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| 摘 要： | 为解决航天器在空间轨道运行时润滑失效的问题,将高压直射式雾化喷嘴应用到空间润滑领域,利用流体动力学软件CFD-ACE+2009,建立了直射式雾化喷嘴气液两相流模型,在此基础上,对润滑油喷雾流的生成过程进行数值模拟,并考察了喷嘴处液体流动速度及压力的分布情况.通过2种高粘度液体NYE 2001、Krytox 143AB与柴油的对比,分析了液体物理参数对液体内部压力传递及流速变化的影响.数值模拟结果表明:航空润滑油NYE 2001的高粘度严重阻碍入口压力的传递,当入口压力为15 MPa时,1 mm长的喷嘴末端压力下降到0.42 MPa,降幅达到97.2%;过高的液体粘度和过长的喷嘴,对液体喷雾流的形成产生不利影响.
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| 关 键 词： | 高压雾化喷嘴 空间润滑 CFD-ACE+2009 气液两相流 高粘度 |
Spray Characteristics of High-Pressure Mist Nozzle of Lubrication Device for Space Mechanisms |
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| SHENG Mingwei,CHEN Weishan,LIU Junkao.Spray Characteristics of High-Pressure Mist Nozzle of Lubrication Device for Space Mechanisms[J].Journal of Southwest Jiaotong University,2011,46(4):671-675. |
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| Authors: | SHENG Mingwei CHEN Weishan LIU Junkao |
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| Institution: | SHENG Mingwei,CHEN Weishan,LIU Junkao(State Key Laboratory of Robotics and System,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | To solve the lubricating failure of spacecrafts in orbit for lack of lubrication,a high-pressure mist nozzle was applied to the spatial lubrication field.A gas-liquid two-phase flow model for direct mist nozzles was established,and the mist flow generating process was simulated using the software of computational fluid dynamic technology CFD-ACE+2009.On this basis,both the lubricant flow velocity and pressure distribution near the nozzle were investigated.By comparison of two high-viscosity fluids,NYE 2001 ... |
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| Keywords: | high-pressure mist nozzle spatial lubrication CFD-ACE 2009 gas-liquid two-phase flow high viscosity |
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