Numerical and experimental research on multistage pump as turbine system
Numerical and experimental research on multistage pump as turbine system
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多级泵涡轮系统数值与试验研究
DOI：
10.1080/15435075.2017.1350961
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发表时间：
2017
影响因子：
3.3
通讯作者：
Zhigang Li
中科院分区：
文献类型：
--
作者：
宿向辉;Si Huang;李昳;朱祖超;Zhigang Li
近年来，泵即涡轮（PAT）的研究已成为流体机械领域的热点问题之一。在这些水轮机中，多级PAT广泛应用于工业领域。然而，人们最关注的是单级 PAT 和涡轮机本身的性能。本文对一种潜在的带有负载泵的多级 PAT 系统进行了数值和实验研究。从理论上探讨了PAT与负载泵的匹配关系，并提出了预测PAT系统性能的分析方法。采用计算流体动力学方法（CFD）研究PAT在恒定旋转或一定扬程下的性能特性。对多级PAT系统在恒速和变速下的运行规律进行了分析，证实了系统性能的预测。研究结果可以指导选择合适的负载泵并提高PAT系统的效率。
Recently, researches on pump as turbine (PAT) have been one of the hot issues in fluid machineries. Of these hydraulic turbines, multi-stage PATs are widely used in industrial fields. However, most attentions have been paid on performance of the single-stage PATs and the turbines themselves. In this paper, a potential multi-stage PAT system with load pump was investigated numerically and experimentally. The match relations between PAT and load pump were explored by theory, and an analytical method to predict performance of PAT system was proposed in addition. Computational fluid dynamics method (CFD) was adopted to study the performance characteristics of PAT under a constant rotation or certain head. The operational rules of multi-stage PAT system were analyzed in both constant and variable speed that confirmed the prediction of system performance. The results could give guidance to choose a proper load pump and promote efficiency of PAT system.