Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits | |
Long XP(龙新平); Yao H; Zhao JF(赵建福); Long XP(龙新平) | |
Source Publication | International Journal of Heat and Mass Transfer |
2009 | |
Volume | 52Issue:9-10Pages:2415-2420 |
ISSN | 0017-9310 |
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 |
Subject Area | 流体力学 |
DOI | 10.1016/j.ijheatmasstransfer.2008.11.018 |
Indexed By | SCI |
Language | 英语 |
WOS ID | WOS:000264350900024 |
WOS Research Area | Thermodynamics ; Engineering ; Mechanics |
WOS Subject | Thermodynamics ; Engineering, Mechanical ; Mechanics |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/28763 |
Collection | 微重力重点实验室 |
Corresponding Author | Long XP(龙新平) |
Recommended Citation GB/T 7714 | Long XP,Yao H,Zhao JF,et al. Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits[J]. International Journal of Heat and Mass Transfer,2009,52,9-10,:2415-2420. |
APA | Long XP,Yao H,赵建福,&龙新平.(2009).Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits.International Journal of Heat and Mass Transfer,52(9-10),2415-2420. |
MLA | Long XP,et al."Investigation on mechanism of critical cavitating flow in liquid jet pumps under operating limits".International Journal of Heat and Mass Transfer 52.9-10(2009):2415-2420. |
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