Numerical Study of the Effect of Non-condensable Gases(NCG) on Gas-liquid Two-phase Flow Characteristics in the Journal Bearing

摘要：

　　Journal bearing is an important component of heavy rotary machinery,such as gas turbine.steam turbine and compressor,supporting the heavy load.The micro-flow nature directly determined the static and dynamic characteristics and influence the equipment performance.A micro-channel film model of double oil grooved round slid bearing has been developed in this paper.The effect of dissolved non-condensable gases (mainly air) on pressure distribution of oil film and cavitation zone has also been analysed based on CFD methods which combined the mixture model and cavitation model(include the effect of non-condensable gases).We found that there existed an critical value.when exceed,the oil vapor volume fraction will increase rapidly,causing the deterioration of supported characteristics.and bearing capacity will drop sharply.

关键词： Journal bearing Two-phase flow Non-condensable Gases

作者: Guoyao Zhao Rui Guo Xiaodong Zhu

作者单位: National Engineering Research Center of Turbogenerator Vibration,Southeast University,Nanjing Jiangsu 210096

会议类型: 国际会议

会议名称: The 9Th International Conference on Vibration Engineering and Technology of Machinery(第九届振动工程及机械科学技术国际会议)(VETOMAC-IX)

会议地点: 南京

会议语种:英文

页码: 1-6

在线出版日期: 2013-08-20（万方平台首次上网日期，不代表论文的发表时间）