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Mathematical Problems in Engineering
Volume 2011, Article ID 921095, 11 pages
http://dx.doi.org/10.1155/2011/921095
Research Article

Rotordynamic Analysis for a Turbo-Machine with Fluid-Solid Interaction and Rotation Effects

1Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
2Dynamics and Control, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, China

Received 31 August 2010; Accepted 12 April 2011

Academic Editor: Victoria Vampa

Copyright © 2011 Rui Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The rotordynamics and fluid dynamics of a turbo-machine considering the effect of fluid-solid interaction (FSI) are numerically investigated using finite element software ADINA. The iterative method is adopted in computation of coupled fields of displacement and fluid. What distinguishes the present study from previous ones is the use of ADINA's rotational meshes and the FSI interface that separates the rotor surface from its surrounding fluid. The rotor's center orbit and frequency response as well as the transient fluid dynamics are obtained with various axial flow speeds. By including real rotating motion of the rotor, this paper presents a better way to solve complicated rotordynamic problems of turbo-machines that are operated in FSI circumstances.