1. Transportation Equipments and Ocean Engineeing College, Dalian Maritime University, Dalian 116026，China；
2. School of Machinery and Electricity, Zhongyuan University of Technology, Zhengzhou 450007，China；
3. School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024，China
Abstract：This paper is focused on the aerostatic bearing-rotor system based on ship turbocharger. One quasi-dynamic interaction method between flow field and rotor dynamics is proposed. CFD software is used to calculate the flow field with the varying of eccentricity and rotor speed. Based on the calculation results, one nonlinear fitting function of the bearing load capacity related to eccentricity and rotor speed is deprived. The finite element method and coupled method are used respectively to build the kinetic model of the rotor system and to calculate the kinetic response of it under the influence of the gravity, the unbalanced force and the gas film force. The critical speed and the response characteristics are followed obtained. The computed numerical results are certified by the experiments which show that the coupled method based on the calculation results of CFD calculation can describe the kinetic characteristics of the system with a good accuracy.
于贺春;马文琦;赵广;王祖温;陈龙兴;刘海艳. 船舶增压器静压气体轴承-转子系统动力学特性研究[J]. , 2011, 30(12): 1-6,27.
Yu Hechun;Ma Wenqi;Zhao Guang;Wang Zuwen;Chen Longxing;Liu Haiyan . Research on kinetic characteristics of aerostatic bearing-rotor system based on ship turbocharger. , 2011, 30(12): 1-6,27.
2011, Vol. 30 
