离心泵正停和反停瞬态特性的比较

IF 1.1 Q4 THERMODYNAMICS Frontiers in Heat and Mass Transfer Pub Date : 2022-08-11 DOI:10.5098/hmt.18.47

Sanping Li, Yu‐Liang Zhang, H. Lin, Jun-Jian Xiao, Li Zhang

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引用次数: 0

摘要

离心泵在关闭阀门的情况下需要停止，有时由于某些特定的应用要求。本文对低比转速离心泵在闭阀正向和反向停止过程中的非定常流动进行了数值模拟。研究结果表明，在停车期间，平均内压逐渐减小。在相同的叶片半径下，工作面上的压力明显高于吸力面。从叶轮入口到出口，压力逐渐增加。仿真结果充分显示了离心泵在正停和反停期间的瞬态流动特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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COMPARISON OF TRANSIENT CHARACTERISTICS OF A CENTRIFUGAL PUMP DURING FORWARD AND REVERSE STOPPING PERIODS

Centrifugal pumps need to be stopped in the case of closing valve sometimes due to some specific application requirements. This paper presents a numerical simulation of the unsteady flow inside a low specific speed centrifugal pump during closed-valve forward and reverse stopping process. The study results show that the average internal pressure gradually decreases during stopping periods. At the same blade radius, the pressure on working surface is significantly higher than the suction surface. The pressure gradually increases from the impeller inlet to the outlet. The simulation fully shows the transient flow characteristics inside the centrifugal pump during forward and reverse stopping period.

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来源期刊

Frontiers in Heat and Mass Transfer THERMODYNAMICS-

CiteScore

2.50

自引率

61.10%

发文量

审稿时长

10 weeks

期刊介绍： Frontiers in Heat and Mass Transfer is a free-access and peer-reviewed online journal that provides a central vehicle for the exchange of basic ideas in heat and mass transfer between researchers and engineers around the globe. It disseminates information of permanent interest in the area of heat and mass transfer. Theory and fundamental research in heat and mass transfer, numerical simulations and algorithms, experimental techniques and measurements as applied to all kinds of current and emerging problems are welcome. Contributions to the journal consist of original research on heat and mass transfer in equipment, thermal systems, thermodynamic processes, nanotechnology, biotechnology, information technology, energy and power applications, as well as security and related topics.