Engineering Mechanics ›› 2009, Vol. 26 ›› Issue (增刊Ⅱ): 68-079.

• 综述 • Previous Articles     Next Articles

A REVIEW OF MODERN ROTOR/SEAL DYNAMICS

*CAO Shu-qian1,2,3 , CHEN Yu-shu1,2,3   

  1. (1. School of Mechanical Engineering, Tianjin University, Tianjin 300072, China; 2. Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin 300072, China; 3. State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-25 Published:2009-12-25

Abstract: A review of rotor/seal dynamics is given, focusing on the problems, contents, and main results achieved in modern rotor/seal dynamics. Researches of modern 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.

Key words: rotor, seal, dynamics, stability, review

CLC Number: 

  • O347.6
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