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论文:2013,Vol:31,Issue(1):71-76 |
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引用本文： |
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孙恒超, 陈国定, 陈薄. 航空发动机涡轮前支承轴承腔油气两相物理场分析[J]. 西北工业大学 |
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Sun Hengchao, Chen Guoding, Chen Bo. Physical Fields of Oil/Air Two-Phase in Aeroengine Bearing Chamber in front of Turbine[J]. Northwestern polytechnical university |
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| 航空发动机涡轮前支承轴承腔油气两相物理场分析 |
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| 孙恒超, 陈国定, 陈薄 |
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| 西北工业大学 机电学院, 陕西 西安 710072 |
| 摘要: |
| 处在航空发动机热区的涡轮前支承轴承腔的油气两相物理场分析是进行二次流及润滑系统设计的重要基础工作。文章结合某型发动机涡轮前轴承腔的结构和工况参数,构建了适用于发动机全运行状态下的轴承腔油气两相物理场理论计算模型,求解获得了轴承腔内油气两相介质流动的物理场。探讨了轴承腔内油气两相流动的速度、压力、温度及壁面油膜厚度在腔内不同位置的分布情况;分析了发动机运行状态对上述物理场的影响规律;与试验数据的比较支持了文中理论分析方法的正确性。提出的轴承腔油气两相物理场分析方法对于航空发动机主轴支承轴承腔的润滑与换热设计具有应用价值。 |
| 关键词:
航空发动机
轴承腔
两相流
物理场
对流换热
油膜厚度
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| Physical Fields of Oil/Air Two-Phase in Aeroengine Bearing Chamber in front of Turbine |
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| Sun Hengchao, Chen Guoding, Chen Bo |
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| Department of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| The analysis of physical fields of oil/air two-phase flow of in bearing chamber in front of turbine and athot zone of aeroengine is an important and basic work in designing lubrication and secondary air systems.Accordingto the geometry and operating parameters of bearing chamber equipped on a certain turbofan engine, a theoreticalcalculation model for analyzing oil/air physical fields in bearing chamber for all operating states of aeroengine isbuilt, the oil/air two-phase flow physical fields are obtained.The velocity, pressure, temperature and oil filmthickness distributions of oil/air two-phase flow in bearing chamber are discussed.The effect of aeroengine operat-ing sates on physical fields is analyzed.The comparison of calculated values and experimental data supports the cor-rectness of the present theoretical methods.The theoretical methods for analyzing oil/air two-phase physical fieldsand the calculated results presented in this paper are, we believe, applicable to bearing chamber lubrication andheat transfer engineering design and academic research. |
| Key words:
aircraft engines
calculations
design
experiments
heat convection
heat transfer
mathematicalmodels
pressure distribution
temperature distribution
velocity distribution
two phase flow;bear-ing chamber
convection heat transfer
physical fields
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| 收稿日期: 2012-04-19
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(50975233、51275411);西北工业大学研究生创业种子基金(Z2012051)资助 |
| 通讯作者:
Email： |
| 作者简介: 孙恒超(1987-)，西北工业大学博士研究生，主要从事航空发动机润滑系统设计研究。
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| 作者相关文章 |
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| 孙恒超 在本刊中的所有文章 |
| 陈国定 在本刊中的所有文章 |
| 陈薄 在本刊中的所有文章 |
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参考文献: |
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相关文献: |
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1．陈国定, 王涛, 刘曼利, 孙恒超, 张永红.轴承腔两相流动流型特征参数及鲁棒性分析[J]. 西北工业大学, 2012,30(2): 155-159 |
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