Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air

Most of the research on the cavitation with entrained air has focused on the military direction, but it ,about centrifugal pumps, which is relevant to people's livelihood, is still relatively lacking. In order to study the basic law of the development of cavitation inside centrifugal pumps unde...

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Autores principales:	Deng Fanjie, Yuan Jianping, Liao Minquan, Chen Mengfei, Zhu Han, Si Qiaorui
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	centrifugal pump cavitation with entrained air experiment aeration Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/21a87ec992af4436a1c3882e8b1fd6d3
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id	oai:doaj.org-article:21a87ec992af4436a1c3882e8b1fd6d3
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spelling	oai:doaj.org-article:21a87ec992af4436a1c3882e8b1fd6d32021-11-12T11:44:34ZVariations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air2267-124210.1051/e3sconf/202132104017https://doaj.org/article/21a87ec992af4436a1c3882e8b1fd6d32021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_04017.pdfhttps://doaj.org/toc/2267-1242Most of the research on the cavitation with entrained air has focused on the military direction, but it ,about centrifugal pumps, which is relevant to people's livelihood, is still relatively lacking. In order to study the basic law of the development of cavitation inside centrifugal pumps under aeration conditions, a test bench suitable for cavitation experiments with incoming flow containing gas was obtained. Furthermore, a single-stage single-suction 6-blade centrifugal pump was used as the research object to conduct pressure pulsation experiments under cavitation condition when the incoming flow was 1.0% air viod fraction at 2900r/min-50m3/h. The results showed that: After cavitation happened, the greater aeration content will deteriorate the pump's anti-cavitation performance, but the head curve is more gentle in falling down compared to natural cavitation. Hence aeration has a beneficial effect on the performance degradation of the pump under the cavitation condition. At the same time, before the cavitation number drops to the fracture cavitation number of the pump, aeration has improvement in the efficiency of the pump in different degrees , especially in the situation with the ventilated rate of 1.0%. The main frequency of pressure pulsation at the inlet and outlet of the test pump after aeration is dominated by the blade frequency. The shaft frequency signal at the outlet gradually decreases with the cavitation number lessened. Moreover the amplitude of the blade frequency grows slightly with the reduction of the cavitation number. But it tends to soar when the cavitation number is less than the fracture cavitation number.Deng FanjieYuan JianpingLiao MinquanChen MengfeiZhu HanSi QiaoruiEDP Sciencesarticlecentrifugal pump cavitation with entrained air experiment aerationEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 04017 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	centrifugal pump cavitation with entrained air experiment aeration Environmental sciences GE1-350
spellingShingle	centrifugal pump cavitation with entrained air experiment aeration Environmental sciences GE1-350 Deng Fanjie Yuan Jianping Liao Minquan Chen Mengfei Zhu Han Si Qiaorui Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
description	Most of the research on the cavitation with entrained air has focused on the military direction, but it ,about centrifugal pumps, which is relevant to people's livelihood, is still relatively lacking. In order to study the basic law of the development of cavitation inside centrifugal pumps under aeration conditions, a test bench suitable for cavitation experiments with incoming flow containing gas was obtained. Furthermore, a single-stage single-suction 6-blade centrifugal pump was used as the research object to conduct pressure pulsation experiments under cavitation condition when the incoming flow was 1.0% air viod fraction at 2900r/min-50m3/h. The results showed that: After cavitation happened, the greater aeration content will deteriorate the pump's anti-cavitation performance, but the head curve is more gentle in falling down compared to natural cavitation. Hence aeration has a beneficial effect on the performance degradation of the pump under the cavitation condition. At the same time, before the cavitation number drops to the fracture cavitation number of the pump, aeration has improvement in the efficiency of the pump in different degrees , especially in the situation with the ventilated rate of 1.0%. The main frequency of pressure pulsation at the inlet and outlet of the test pump after aeration is dominated by the blade frequency. The shaft frequency signal at the outlet gradually decreases with the cavitation number lessened. Moreover the amplitude of the blade frequency grows slightly with the reduction of the cavitation number. But it tends to soar when the cavitation number is less than the fracture cavitation number.
format	article
author	Deng Fanjie Yuan Jianping Liao Minquan Chen Mengfei Zhu Han Si Qiaorui
author_facet	Deng Fanjie Yuan Jianping Liao Minquan Chen Mengfei Zhu Han Si Qiaorui
author_sort	Deng Fanjie
title	Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
title_short	Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
title_full	Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
title_fullStr	Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
title_full_unstemmed	Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air
title_sort	variations of performance and pressure pulsation during cavitation in centrifugal pumps with entrained air
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/21a87ec992af4436a1c3882e8b1fd6d3
work_keys_str_mv	AT dengfanjie variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair AT yuanjianping variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair AT liaominquan variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair AT chenmengfei variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair AT zhuhan variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair AT siqiaorui variationsofperformanceandpressurepulsationduringcavitationincentrifugalpumpswithentrainedair
_version_	1718430542167277568

Variations of Performance and Pressure Pulsation During Cavitation in Centrifugal Pumps with Entrained Air

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