论文:2012,Vol:30,Issue(2):155-159
引用本文:
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
Chen Guoding, Wang Tao, Liu Manli, Sun Hengchao, Zhang Yonghong. Exploring How to Realize Accurate and Efficient Lubrication Design and Heat Transfer Analysis for Oil/Air Two-Phase Flow in Bearing Chamber[J]. Northwestern polytechnical university

轴承腔两相流动流型特征参数及鲁棒性分析
陈国定1, 王涛1, 刘曼利2, 孙恒超1, 张永红1
1. 西北工业大学 机电学院,陕西 西安 710072;
2. 中航工业第一飞机设计研究院,陕西 西安 710089
摘要:
航空发动机轴承腔的润滑设计和换热分析依赖于对轴承腔中润滑介质两相流动特性的理解,依据流型进行轴承腔油气两相介质流动研究是获取流动特性的有效途径。针对通过试验判断油气两相介质流动形式的需要,结合数值分析和试验数据,在辨识能力和试验获取等方面的考虑前提下,提出了辨识航空发动机轴承腔中均相流动与含油滴气/液分层流动两种主要油气两相流型的特征参数——体积含油率和无量纲速度,探讨了两个特征参数在较宽工况范围内保持流型辨识能力的鲁棒性。研究工作对于借助于试验判断油气两相流型,从而可以在严谨理论指导下基于流型进行航空发动机轴承腔润滑介质两相流动特性分析,实现准确高效的润滑设计和换热分析的设计路线实施是很有意义的工作。
关键词:    轴承腔    航空发动机    两相流    流型辨识   
Exploring How to Realize Accurate and Efficient Lubrication Design and Heat Transfer Analysis for Oil/Air Two-Phase Flow in Bearing Chamber
Chen Guoding1, Wang Tao1, Liu Manli2, Sun Hengchao1, Zhang Yonghong1
1. Department of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China;
2. AVIC First Aircraft Institute,Xi'an 710089,China
Abstract:
Sections 1 through 4 of the full paper explain our exploration which we believe can lead to obtaining lu-brication design and heat transfer analysis that are more accurate and effective than previous ones. Their core con-sists of: "The lubrication design and the heat transfer analysis in the bearing chamber of an aero-engine depend onour understanding of its lubricant two-phase flow characteristics. Researching on the oil/air two-phase flow based onflow pattern is an effective approach to obtaining the flow characteristics. According to the need of determining theoil/air two-phase flow form by experiments, considering the identification ability and experiment accessibility, theflow pattern characteristic parameters are proposed with numerical analysis and experimental results, and their ro-bustness about the identification ability in broader operating conditions are discussed; the flow pattern characteristicparameters refer to volume oil content and dimensionless velocity, which are used to identify the homogeneous flowand oil/air(oil drops) stratified flow(the two primary oil/air two-phase flow in bearing chamber). "The results ofour exploration, presented in Figs. 2, 3 and 4, and their analysis show preliminarily that our exploration is indeed asignificant work for realizing accurate and efficient lubrication design and heat transfer analysis.
Key words:    aircraft engines    analysis    bearings(machine parts)    boundary conditions    calculations    design    effi-ciency    geometry    heat transfer    models    numerical methods    pattern recognition    schematic dia-grams    simulation    two phase flow;bearing chamber   
收稿日期: 2011-05-06     修回日期:
DOI:
基金项目: 国家自然科学基金(50975233);航空科学基金(20100453004)资助
通讯作者:     Email:
作者简介: 陈国定(1956-),西北工业大学教授、博士生导师,主要从事航空发动机轴承腔油气两相流、润滑与密封技术、机电系统热分析和现代机械设计理论与方法研究。
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1.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, 2013,31(1): 71-76