Numerical study on the transient behavior of a radial pump during starting time

This paper presents a fast simulation model for predicting the dynamic response of a motor-pump system to startup event. The purpose is to analyze the effect of the impeller acceleration time, the final flow rate and the impeller geometry on the pump transient flow during starting operations. The mo...

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Autores principales:	Faouzi Omri, Lamjed Hadj Taieb, Sami Elaoud
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	d-q axes theory impeller geometry induction motor method of characteristics radial pump transient flow Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/e28386c808bf4275b7afd7a79384f09d
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id	oai:doaj.org-article:e28386c808bf4275b7afd7a79384f09d
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spelling	oai:doaj.org-article:e28386c808bf4275b7afd7a79384f09d2021-11-05T17:03:26ZNumerical study on the transient behavior of a radial pump during starting time2709-80282709-803610.2166/aqua.2021.136https://doaj.org/article/e28386c808bf4275b7afd7a79384f09d2021-05-01T00:00:00Zhttp://aqua.iwaponline.com/content/70/3/257https://doaj.org/toc/2709-8028https://doaj.org/toc/2709-8036This paper presents a fast simulation model for predicting the dynamic response of a motor-pump system to startup event. The purpose is to analyze the effect of the impeller acceleration time, the final flow rate and the impeller geometry on the pump transient flow during starting operations. The motor speed and torque variations were predicted by simulating the transient law of the three-phase induction motor by adopting the d-q axes theory. The pump model was built by solving the unsteady flow governing equations with the method of characteristics (MOC). The whole model was validated with available tests from literature. Accordingly, the computation of impeller acceleration, the motor torque, the unsteady pressure and flow rate was made for various starting conditions. The results have revealed that during its starting time, the pump hydraulic transients are well influenced by the motor speed acceleration, the flow inertia and the impeller geometry. Through the analysis of the simulation results, the conclusion was that the accuracy of the present method is reasonable, and it can be used for assisting pumping system design. HIGHLIGHTS Radial pump startup transient was investigated using the method of characteristics (MOC).; Pump fast startup can cause a significant head impact and high torque oscillations.; Startup hydraulic transients are well influenced by the motor acceleration time and the impeller geometry.;Faouzi OmriLamjed Hadj TaiebSami ElaoudIWA Publishingarticled-q axes theoryimpeller geometryinduction motormethod of characteristicsradial pumptransient flowEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENAqua, Vol 70, Iss 3, Pp 257-273 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	d-q axes theory impeller geometry induction motor method of characteristics radial pump transient flow Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	d-q axes theory impeller geometry induction motor method of characteristics radial pump transient flow Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Faouzi Omri Lamjed Hadj Taieb Sami Elaoud Numerical study on the transient behavior of a radial pump during starting time
description	This paper presents a fast simulation model for predicting the dynamic response of a motor-pump system to startup event. The purpose is to analyze the effect of the impeller acceleration time, the final flow rate and the impeller geometry on the pump transient flow during starting operations. The motor speed and torque variations were predicted by simulating the transient law of the three-phase induction motor by adopting the d-q axes theory. The pump model was built by solving the unsteady flow governing equations with the method of characteristics (MOC). The whole model was validated with available tests from literature. Accordingly, the computation of impeller acceleration, the motor torque, the unsteady pressure and flow rate was made for various starting conditions. The results have revealed that during its starting time, the pump hydraulic transients are well influenced by the motor speed acceleration, the flow inertia and the impeller geometry. Through the analysis of the simulation results, the conclusion was that the accuracy of the present method is reasonable, and it can be used for assisting pumping system design. HIGHLIGHTS Radial pump startup transient was investigated using the method of characteristics (MOC).; Pump fast startup can cause a significant head impact and high torque oscillations.; Startup hydraulic transients are well influenced by the motor acceleration time and the impeller geometry.;
format	article
author	Faouzi Omri Lamjed Hadj Taieb Sami Elaoud
author_facet	Faouzi Omri Lamjed Hadj Taieb Sami Elaoud
author_sort	Faouzi Omri
title	Numerical study on the transient behavior of a radial pump during starting time
title_short	Numerical study on the transient behavior of a radial pump during starting time
title_full	Numerical study on the transient behavior of a radial pump during starting time
title_fullStr	Numerical study on the transient behavior of a radial pump during starting time
title_full_unstemmed	Numerical study on the transient behavior of a radial pump during starting time
title_sort	numerical study on the transient behavior of a radial pump during starting time
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e28386c808bf4275b7afd7a79384f09d
work_keys_str_mv	AT faouziomri numericalstudyonthetransientbehaviorofaradialpumpduringstartingtime AT lamjedhadjtaieb numericalstudyonthetransientbehaviorofaradialpumpduringstartingtime AT samielaoud numericalstudyonthetransientbehaviorofaradialpumpduringstartingtime
_version_	1718444135254327296

Numerical study on the transient behavior of a radial pump during starting time

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