|Table of Contents|

Study on cavitation performance of gap inducer under multi-operating conditions(PDF)

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

Issue:
2019年01期
Page:
8-13
Research Field:
研究与设计
Publishing date:

Info

Title:
Study on cavitation performance of gap inducer under multi-operating conditions
Author(s):
WANG Wenting;  XU Kaifu;  LI Yongpeng;  YAN Junfeng
(Xi'an Aerospace Propulsion Institute,Xi'an 710100,China)
Keywords:
gap inducer;  multi-operating conditions;  cavitation performance
PACS:
V434.21
DOI:
-
Abstract:
To improve the anti-cavitation performance of a high speed centrifugal pump with a variable flow ratio of 20, a gap inducer was designed.The cavitaion simulation calculation and hydrodynamic performance test of pumps with conventional variable-pitch inducer and gap inducer were carried out, respectively, respectively.The head cavitation collapse characteristics of the pump under multi-operating conditions and the flow fields characteristics, such as the cavitation bubble distribution of the inducer blade channels were analyzed.The cavitation performance and external characteristics of two centrifugal inducer pump under multi-operating conditions were obtained.The results show that the gap inducer increase the operating range of the high speed centrifugal pump, compared with conventional inducer.Besides, the anti-cavitation performance of the pump with low flow rate is improved significantly.Meanwhile, the cavitation performance under design condition is nearly the same.On the other hand, the efficiency of the gap inducer with the small flow rate is slightly improved, while the efficiency and head of the pump with the large flow rate are both reduced.

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Last Update: 2019-02-20