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Numerical simulations of rotating cavitation in inducer(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2014年04期
Page:
43-49
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical simulations of rotating cavitation in inducer
Author(s):
YE Han-yu;  LI Jia-wen;  LI Xin
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
Keywords:
-
PACS:
V434-34
DOI:
-
Abstract:
Among various cavitation instabilities in inducers, rotating cavitation is the most common one, which can lead to cyclic loading of the inducer blades and severe shaft vibrations, which in turn can degrade the reliability of turbopumps. In this paper, steady and unsteady simulations are performed for a three-blade inducer. In unsteady simulations within a certain range of cavitation numbers, the rotating cavitation was found. Then, according to a typical calculation result, the variation of cavity sizes of the blades and attack angles with time when rotating cavitation occurred were analyzed. The results indicate that cavity size on each blade has similar changing trend with the attack angle of the nearest downstream blade, but the changing trend is opposite at the point near maximum value of the cavity size. In addition, within one evolution period of cavity size, the changing rate of cavity size on each blade and changing trend of its attack angle are not

References:

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