Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump

Many systems with liquid ejectors and centrifugal pump are known. Often, jet pumps are used to provide a self-priming mode, as well as an acceptable pressure level for cavitation-free operation. The main disadvantage of such systems is the relatively low efficiency associated with the peculiarities...

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Autores principales:	Lyamasov A. A., Orahelashvili B. M., Gribkov A. M.
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/72b7c70460e74af7b58a0aa0753e5880
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spelling	oai:doaj.org-article:72b7c70460e74af7b58a0aa0753e58802021-11-12T11:44:23ZNumerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump2267-124210.1051/e3sconf/202132004003https://doaj.org/article/72b7c70460e74af7b58a0aa0753e58802021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/96/e3sconf_esei2021_04003.pdfhttps://doaj.org/toc/2267-1242Many systems with liquid ejectors and centrifugal pump are known. Often, jet pumps are used to provide a self-priming mode, as well as an acceptable pressure level for cavitation-free operation. The main disadvantage of such systems is the relatively low efficiency associated with the peculiarities of energy transfer in ejector. To increase efficiency double surface jet pump with driving and suction flow swirl (with circumferential component of velocity) is proposed. The active flow swirling is ensured by using of multi-nozzle tangential nozzle inlet and passive flow part by a special blade system. Combination of these factors makes it possible to improve the efficiency of energy conversion process. In comparison with the known design increases pump efficiency by 10 % – 15 %. Flow swirl also permits to reduce horizontal overall size by increasing the diffuser angle and reducing the mixing chamber length. These positive effects can be achieved by using methods and recommendations given in this paper. The paper also includes ANSYS CFX numerical simulation study results of double surface jet pump and analysis of the impact of nozzle position, length of the mixing chamber and other geometry parameters on pump performance. The results allow optimize the constructive solutions.Lyamasov A. A.Orahelashvili B. M.Gribkov A. M.EDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 320, p 04003 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Lyamasov A. A. Orahelashvili B. M. Gribkov A. M. Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
description	Many systems with liquid ejectors and centrifugal pump are known. Often, jet pumps are used to provide a self-priming mode, as well as an acceptable pressure level for cavitation-free operation. The main disadvantage of such systems is the relatively low efficiency associated with the peculiarities of energy transfer in ejector. To increase efficiency double surface jet pump with driving and suction flow swirl (with circumferential component of velocity) is proposed. The active flow swirling is ensured by using of multi-nozzle tangential nozzle inlet and passive flow part by a special blade system. Combination of these factors makes it possible to improve the efficiency of energy conversion process. In comparison with the known design increases pump efficiency by 10 % – 15 %. Flow swirl also permits to reduce horizontal overall size by increasing the diffuser angle and reducing the mixing chamber length. These positive effects can be achieved by using methods and recommendations given in this paper. The paper also includes ANSYS CFX numerical simulation study results of double surface jet pump and analysis of the impact of nozzle position, length of the mixing chamber and other geometry parameters on pump performance. The results allow optimize the constructive solutions.
format	article
author	Lyamasov A. A. Orahelashvili B. M. Gribkov A. M.
author_facet	Lyamasov A. A. Orahelashvili B. M. Gribkov A. M.
author_sort	Lyamasov A. A.
title	Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
title_short	Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
title_full	Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
title_fullStr	Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
title_full_unstemmed	Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump
title_sort	numerical simulation of double surface liquid ejector with flow swirl for centrifugal pump
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/72b7c70460e74af7b58a0aa0753e5880
work_keys_str_mv	AT lyamasovaa numericalsimulationofdoublesurfaceliquidejectorwithflowswirlforcentrifugalpump AT orahelashvilibm numericalsimulationofdoublesurfaceliquidejectorwithflowswirlforcentrifugalpump AT gribkovam numericalsimulationofdoublesurfaceliquidejectorwithflowswirlforcentrifugalpump
_version_	1718430625984151552

Numerical Simulation of Double Surface Liquid Ejector with Flow Swirl for Centrifugal Pump

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