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	VIBRATION ANALYSIS OF TURBINE BASED ON FLUID-STRUCTURE COUPLING
	Liu Demin ; Liu Xiaobing
	2010-10-12 ; 2010-10-12
关键词	Fluid-structure coupling Additional quality matrix Vibration Mode Engineering, Mechanical
中文摘要	The vibration of a Francis turbine is analyzed with the additional quality matrix method based on fluid-structure coupling (FSC). Firstly, the vibration frequency and mode of blade and runner in air and water are calculated. Secondly, the influences to runner frequency domain by large flow, small flow and design flow working conditions are compared. Finally the influences to runner modes by centrifugal forces under three rotating speeds of 400 r/min, 500 r/min and 600 r/min are compared. The centrifugal force and small flow working condition have greatly influence on the vibration of small runner. With the increase of centrifugal force, the vibration frequency of the runner is sharply increased. Some order frequencies are even close to the runner natural frequency in the air. Because the low frequency vibration will severely damage the stability of the turbine, low frequency vibration of units should be avoided as soon as possible.
语种	英语 ; 英语
出版者	EDITORIAL OFFICE CHINESE JOURNAL MECHANICAL ENGINEERING ; BEIJING ; 22 BAIWANZHUANG DAJIE, BEIJING, 100037, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79931]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Demin,Liu Xiaobing. VIBRATION ANALYSIS OF TURBINE BASED ON FLUID-STRUCTURE COUPLING[J],2010, 2010.
APA	Liu Demin,&Liu Xiaobing.(2010).VIBRATION ANALYSIS OF TURBINE BASED ON FLUID-STRUCTURE COUPLING..
MLA	Liu Demin,et al."VIBRATION ANALYSIS OF TURBINE BASED ON FLUID-STRUCTURE COUPLING".(2010).

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