文章基本信息

标题：Research on transient dynamic characteristics of three-stage axial-flow multi-phase pumps influenced by gas volume fractions
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作者：Xiaobing Liu ; Quanyou Hu ; Guangtai Shi 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2017
卷号：9
期号：12
页码：1-10
DOI：10.1177/1687814017737669
语种：English
出版社：Sage Publications Ltd.
摘要：The flow inside axial-flow type multi-phase pumps is unstable at the conditions of high-speed and high gas volume fractions. The transient dynamic characteristics induced by the unstable flow will lead to pump vibration. Using the standard k–ε turbulence model, the standard wall equation, and the structured grid division technology, the transient dynamic characteristics of the pump at different gas volume fractions were computed by the SIMPLEC algorithm. The axial force and radial force on the pump were calculated by applying integral to the surface area of the computational domain. The results show that the pressurizing performance of the impeller degrades, the dynamic reaction on the blades decreases, while the force acting on the hub increases with the increasing of gas volume fractions. If the gas volume fraction reaches to a certain value, the direction of axial force on the multi-phase pump will change. The radial forces on the first- and last-stage impellers are non-uniformly distributed, and the p...
关键词：Axial-flow multi-phase pump; gas volume fraction; axial force; radial force; dynamic characteristics