Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet
To find the influence of the suction chamber and throat inlet profiles on the cavitation performance of an annular jet pump (AJP), a numerical method using a combination of the realizable k–ϵ turbulence model and the Schnerr–Sauer cavitation model was applied. This paper comprehensively studied the...
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Online Access: | http://dx.doi.org/10.1080/19942060.2020.1824875 |
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doaj-81d755090ee3488989d282a4c914a22d2020-12-07T17:17:45ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2020-01-011411416142810.1080/19942060.2020.18248751824875Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inletXiaodong Wang0Yunliang Chen1Mengqiu Li2Yong Xu3Bo Wang4Xiaoqiang Dang5State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan UniversityTo find the influence of the suction chamber and throat inlet profiles on the cavitation performance of an annular jet pump (AJP), a numerical method using a combination of the realizable k–ϵ turbulence model and the Schnerr–Sauer cavitation model was applied. This paper comprehensively studied the cavitation performance of AJPs with a polygonal line profile (POL) and a streamlined profile (STR). The results showed that the pump efficiency (η) can be increasedby using the STR and the largest increase was 1.4%. Since the throat is smoothly connected with the suction chamber in the AJP with STR, flow separation and local low pressure did not appear. The critical flow rate ratio (qc) of the AJP with STR was higher than that of the AJP with POL, implying that the former had a wider normal working range. During critical working, the cavitation region in the AJP with STR was narrower than that of the AJP with POL. Importantly, the region of cavitation inception and development in the AJP with STR was closer to the downstream. Hence, it was concluded that the cavitation in the AJP with STR had less influence on the inner flow field.http://dx.doi.org/10.1080/19942060.2020.1824875annular jet pumpsuction chamberthroatcavitation performancecritical flow rate ratio |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaodong Wang Yunliang Chen Mengqiu Li Yong Xu Bo Wang Xiaoqiang Dang |
spellingShingle |
Xiaodong Wang Yunliang Chen Mengqiu Li Yong Xu Bo Wang Xiaoqiang Dang Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet Engineering Applications of Computational Fluid Mechanics annular jet pump suction chamber throat cavitation performance critical flow rate ratio |
author_facet |
Xiaodong Wang Yunliang Chen Mengqiu Li Yong Xu Bo Wang Xiaoqiang Dang |
author_sort |
Xiaodong Wang |
title |
Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
title_short |
Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
title_full |
Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
title_fullStr |
Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
title_full_unstemmed |
Numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
title_sort |
numerical investigation of the cavitation performance of annular jet pumps with different profiles of suction chamber and throat inlet |
publisher |
Taylor & Francis Group |
series |
Engineering Applications of Computational Fluid Mechanics |
issn |
1994-2060 1997-003X |
publishDate |
2020-01-01 |
description |
To find the influence of the suction chamber and throat inlet profiles on the cavitation performance of an annular jet pump (AJP), a numerical method using a combination of the realizable k–ϵ turbulence model and the Schnerr–Sauer cavitation model was applied. This paper comprehensively studied the cavitation performance of AJPs with a polygonal line profile (POL) and a streamlined profile (STR). The results showed that the pump efficiency (η) can be increasedby using the STR and the largest increase was 1.4%. Since the throat is smoothly connected with the suction chamber in the AJP with STR, flow separation and local low pressure did not appear. The critical flow rate ratio (qc) of the AJP with STR was higher than that of the AJP with POL, implying that the former had a wider normal working range. During critical working, the cavitation region in the AJP with STR was narrower than that of the AJP with POL. Importantly, the region of cavitation inception and development in the AJP with STR was closer to the downstream. Hence, it was concluded that the cavitation in the AJP with STR had less influence on the inner flow field. |
topic |
annular jet pump suction chamber throat cavitation performance critical flow rate ratio |
url |
http://dx.doi.org/10.1080/19942060.2020.1824875 |
work_keys_str_mv |
AT xiaodongwang numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet AT yunliangchen numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet AT mengqiuli numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet AT yongxu numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet AT bowang numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet AT xiaoqiangdang numericalinvestigationofthecavitationperformanceofannularjetpumpswithdifferentprofilesofsuctionchamberandthroatinlet |
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1724397429474721792 |