|Table of Contents|

Numerical analysis of instable cavitation phenomenon in 2D blade cascade of inducer(PDF)

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

Issue:
2011年01期
Page:
34-39
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical analysis of instable cavitation phenomenon in 2D blade cascade of inducer
Author(s):
TANG Fei;  LI Jia-wen
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
Keywords:
turbopump;  inducer;  cavitation instable phenomenon;  numerical analy
PACS:
V432-34
DOI:
-
Abstract:
A numerical analysis of cavitation instability phenomenon in a 2D blade cascade in inducer is performed with a mixture model based on Rayleigh-Plesset equation. The results indicate that the instability phenomena is easy to happen in the range of cavitation number. Three instable cavitation phenomena (super-synchronous rotating cavitation which propagates faster than the axis rotation, alternate blade cavitation and sub-synchronous rotating cavitation) appear in the inducer with the decrease of the cavitaion number. The analysis shows that the periodic change frequency of cavity length is related to the axial pressure gradient in the flow field. Higher pressure gradient leads to higher variation frequency of cavity length.

References:

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