现代密封转子动力学研究综述

A REVIEW OF MODERN ROTOR/SEAL DYNAMICS

对转子密封动力学的发展给出了比较全面的综述,特别是针对现代高参数密封转子的存在问题、研究内容及主要成果进行了介绍。将密封转子动力学的研究分为4个方面:1)对密封力模型及其计算方法的研究;2)对密封力集总参数(8个动力系数)的识别;3)不同形式密封(含减阻结构和预旋等)对转子失稳的影响;4)转子/密封动力学模型的建立和分析。对取得的主要成果概括为:1)以Muszynska模型为代表的集总参数模型;2)密封力线性动力系数的识别方法;3)简单转子/密封系统的分岔与混沌等复杂行为;4)近年正在开展的CFD(Computational Fluid Dynamics)与密封/转子相结合的研究取得的进展。最后附有包含经典成果与最新成果的100余篇参考文献。该文可供从事密封转子动力学方面的研究人员参考。

A review of rotor/seal dynamics is given, focusing on the problems, contents, and main results achieved in modem rotor/seal dynamics. Researches of modem rotor/seal dynamics are divided into four parts： 1） modeling and calculation methods of the seal force; 2） identification of the eight lumped parameters of the seal force （the eight dynamic coefficients of the seal）; 3） effect of different structure of seals （including damp-reduced structure and pre-swirl） on rotor stability; and 4） modeling and analysis of rotor/seal dynamic, especially the nonlinear dynamics of the rotor/seal model. The achieved main results are summarized as follows： 1） proposing the lumped parameter seal force model by Muszynska and Bently; 2） obtaining some techniques to identify the lumped parameters of the seal force; 3） studying some complex behaviors including bifurcation and chaos on some simple rotor/seal models; and 4） applying CFD （Computational Fluid Dynamics） to seal force calculation and rotor/seal dynamic analysis. Over one hundred of references are listed at the end of the paper. This review will be helpful for researchers of rotor/seal dynamics.