|Table of Contents|

Influence of key clearance on pump performance(PDF)

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

Issue:
2015年02期
Page:
56-62
Research Field:
研究与设计
Publishing date:

Info

Title:
Influence of key clearance on pump performance
Author(s):
LIU Zhan-yi;  ZHANG Wei-jing;  YANG Jian-wen;  SHI Xiao-bo
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
clearance;  pump;  hydraulic performance;  anti-cavitation performance
PACS:
V434.2-34
DOI:
-
Abstract:
Size control of the clearance is always a complex problem for pump design. For the influence of key clearance on pump performance, ANSYS CFX software, fine hexahedral grid, SST turbulent model and Rayleigh-Plesset air-cavitation model were adopted to carry out the flow field numerical simulation of certain oxidizer pump with different clearance sizes, by which an influence rule of clearance on pump hydraulic and anti-cavitation performance was obtained. In addition, the reasons of generating these influences are analyzed in the aspects of pressure distribution, gaseous phase quotient distribution and velocity field. The result indicates that smaller the float ring clearance is, the higher the efficiency should be; the smaller the blade tip clearance of inducer, the higher the anti cavitation performance of pump becomes. The reason is that smaller clearance leads to weaker regurgitant intensity, then energy loss decreases and static pressure at the inlet of centrifugal wheel increases.

References:

[1]陈晖, 张恩昭, 黄智勇, 等. 高速诱导轮三维空化内流场计算[J]. 水泵技术, 2006 (5): 14-18,25.
[2]陈晖, 李斌, 张恩昭, 等. 液体火箭发动机高转速诱导轮旋转空化[J]. 推进技术, 2009, 30(4): 390-395.
[3]唐飞, 李家文. 诱导轮平面叶栅汽蚀不稳定现象的数值分析[J]. 火箭推进, 2011, 37(1): 34-39.
[4]崔宝玲. 高速诱导轮离心泵的理论分析与数值模拟[D]. 杭州：浙江大学, 2006.

[5]赵瑞. 高速诱导轮离心泵的数值模拟与试验研究[D]. 浙杭州：江理工大学, 2009.

[6]郭晓梅，李昳，崔宝玲, 等. 前置不同诱导轮高速离心泵旋转空化特性研究[J]. 航空学报, 2013, 34(7): 1572- 1581.
[7]李强, 楚武利, 吴艳辉, 等. 叶顶间隙对离心泵性能影响的数值模拟研究[J]. 计算机仿真, 2008, 25(12): 230-234.
[8]梁开洪, 张克危, 许丽. 轴流泵叶顶间隙流动的计算流体动力分析[J]. 华中科技大学学报, 2004, 32(9): 36-38.
[9]牛凯斌. 离心泵诱导轮入口回流空化的数值研究[D]. 西安: 西安理工大学, 2010.
[10]奥夫相尼科夫, 博罗夫斯基. 液体火箭发动机涡轮泵装置原理与计算[M]. 任汉芬, 夏德新, 译. 北京: 中国航天工业总公司第十一研究所(京), 1999.

Memo

Memo:
-
Last Update: 1900-01-01