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Title:
Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits
Author: Long XP(龙新平); Yao H; Zhao JF(赵建福)
Source: International Journal of Heat and Mass Transfer
Issued Date: 2009
Volume: 52, Issue:9-10, Pages:2415-2420
Abstract: The critical cavitating flow in liquid jet pumps under operating limits is investigated in this paper. Measurements on the axial pressure distribution along the wall of jet pumps indicate that two-phase critical flow occurs in the throat pipe under operating limits. The entrained flow rate and the distribution of the wall pressure upstream lowest pressure section does not change when the outlet pressure is lower than a critical value. A liquid-vapor mixing shockwave is also observed under operating limits. The wave front moves back and forth in low frequency around the position of the lowest pressure. With the measured axial wall pressures, the Mach number of the two-phase cavitating flow is calculated. It's found that the maximum Mach number is very close to I under operating limits. Further analysis infers a cross-section where Mach number approaches to I near the wave front. Thus, the liquid-vapor mixture velocity should reach the local sound velocity and resulting in the occurrence of operating limits.
Keyword: Jet Pump ; Cavitation ; Liquid-Vapor Two-Phase Flow ; Critical Flow ; Operating Limit
Language: 英语
Indexed Type: SCI
Corresponding Author: 龙新平
Correspondent Email: xplong@whu.edu.cn
DOI: 10.1016/j.ijheatmasstransfer.2008.11.018
DOC Type: Article
WOS Subject: Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS Subject Extended: Thermodynamics ; Engineering ; Mechanics
WOS ID: WOS:000264350900024
ISSN: 0017-9310
Subject: 流体力学
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/28763
Appears in Collections:国家微重力实验室_期刊论文

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Recommended Citation:
Long XP,Yao H,Zhao JF. Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits[J]. International Journal of Heat and Mass Transfer,2009-01-01,52(9-10):2415-2420.
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