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| Improvement and application of two-control-volume model on labyrinth seal |
| Received:December 21, 2007 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20092015 |
| KeyWord:labyrinth seal two-control-volume model rotordynamic coefficients |
| Author | Institution |
| 薛自华 |
复旦大学力学与工程科学系,上海 |
| 肖忠会 |
沈阳鼓风机集团有限公司,沈阳 |
| 郑铁生 |
复旦大学力学与工程科学系,上海 |
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| Abstract: |
| As for the analysis of labyrinth seal rotordynamics, the two-control-volume model is an efficient approach that is applied well. This paper starts with three relative governing equations, which aretransformed into two dimensionless equations through a nondimensionalized process. It contains a zeroth-order equation, through which a steady fluid distribution is determined, and a first-order equation, through which the seal’s rotordynamic coefficients can be acquired. Since the first-order equation is formulated with matrix form, the relevant operation becomes very simple. The improved approach in this paper has a clearer model and a more concise algorithm than the previous one. Finally compared with results from traditional model, the results of current model are accurate and effective. And then a series of investigations, analysing the influence of some seal parameters upon the rotordynamic coefficients, reveal some useful and practical rules. |
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