3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow

Electromagnetic (EM) pumps, which drive liquid metals by electromagnetic force for Fast Reactor, had been developed. Annular Linear Induction Pumps (ALIPs) are one of EM pumps. There are some reports in which a drop and a fluctuation of the developed pressure occurred near the top of the developed p...

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Autores principales:	Takatoshi ASADA, Rie AIZAWA, Tetsu SUZUKI, Yasushi FUJISHIMA, Eiji HOASHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	electromagnetic pump alip mhd simulation instability pump head Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/89d78071ea4c40c481b3022a4da8a8c4
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spelling	oai:doaj.org-article:89d78071ea4c40c481b3022a4da8a8c42021-11-26T06:30:10Z3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow2187-974510.1299/mej.15-00230https://doaj.org/article/89d78071ea4c40c481b3022a4da8a8c42015-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/5/2_15-00230/_pdf/-char/enhttps://doaj.org/toc/2187-9745Electromagnetic (EM) pumps, which drive liquid metals by electromagnetic force for Fast Reactor, had been developed. Annular Linear Induction Pumps (ALIPs) are one of EM pumps. There are some reports in which a drop and a fluctuation of the developed pressure occurred near the top of the developed pressure and flow rate relation curve (P-Q curve). This phenomenon was reported by Gailitis, Kirillov and Araseki. They simulated it using two-dimensional (2D) code and reported that it was characterized by vortices, which were initiated by azimuthal non-uniformity of sodium flow velocity and/or magnetic field, in the liquid sodium flow. We have calculated the developed pressure of EM pump by 2D magnetohydrodynamics (MHD) code and designed an EM pump. It was found that the code simulated the developed pressure with high accuracy in normal operations. When the flow rate was lower than one in the top of P-Q curve, the developed pressure's drop and fluctuation occurred. The fluctuation would disturb the stable operation of the pump. For avoiding this phenomenon, the EM pump's design becomes sometimes too conservative. To evaluate the quantitative effect of this phenomenon and occurred conditions, we have developed a new three-dimensional(3D) MHD code. Clarification of these conditions and its phenomena will enable us to design a new structure or determine operation conditions. This paper presents the simulation results in terms of the generation of a developed pressure's drop and fluctuation occurrence. We used initial conditions which had azimuthal non-uniformity of sodium velocity to simulate vortices in the liquid sodium. Our 3D MHD code simulated the developed pressure's drop and fluctuation by vortices in radial and circumferential direction. It was confirmed that the vortices developed in the radial direction and then the vortices in circumferential direction developed.Takatoshi ASADARie AIZAWATetsu SUZUKIYasushi FUJISHIMAEiji HOASHIThe Japan Society of Mechanical Engineersarticleelectromagnetic pumpalipmhd simulationinstabilitypump head Mechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 5, Pp 15-00230-15-00230 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	electromagnetic pump alip mhd simulation instability pump head Mechanical engineering and machinery TJ1-1570
spellingShingle	electromagnetic pump alip mhd simulation instability pump head Mechanical engineering and machinery TJ1-1570 Takatoshi ASADA Rie AIZAWA Tetsu SUZUKI Yasushi FUJISHIMA Eiji HOASHI 3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
description	Electromagnetic (EM) pumps, which drive liquid metals by electromagnetic force for Fast Reactor, had been developed. Annular Linear Induction Pumps (ALIPs) are one of EM pumps. There are some reports in which a drop and a fluctuation of the developed pressure occurred near the top of the developed pressure and flow rate relation curve (P-Q curve). This phenomenon was reported by Gailitis, Kirillov and Araseki. They simulated it using two-dimensional (2D) code and reported that it was characterized by vortices, which were initiated by azimuthal non-uniformity of sodium flow velocity and/or magnetic field, in the liquid sodium flow. We have calculated the developed pressure of EM pump by 2D magnetohydrodynamics (MHD) code and designed an EM pump. It was found that the code simulated the developed pressure with high accuracy in normal operations. When the flow rate was lower than one in the top of P-Q curve, the developed pressure's drop and fluctuation occurred. The fluctuation would disturb the stable operation of the pump. For avoiding this phenomenon, the EM pump's design becomes sometimes too conservative. To evaluate the quantitative effect of this phenomenon and occurred conditions, we have developed a new three-dimensional(3D) MHD code. Clarification of these conditions and its phenomena will enable us to design a new structure or determine operation conditions. This paper presents the simulation results in terms of the generation of a developed pressure's drop and fluctuation occurrence. We used initial conditions which had azimuthal non-uniformity of sodium velocity to simulate vortices in the liquid sodium. Our 3D MHD code simulated the developed pressure's drop and fluctuation by vortices in radial and circumferential direction. It was confirmed that the vortices developed in the radial direction and then the vortices in circumferential direction developed.
format	article
author	Takatoshi ASADA Rie AIZAWA Tetsu SUZUKI Yasushi FUJISHIMA Eiji HOASHI
author_facet	Takatoshi ASADA Rie AIZAWA Tetsu SUZUKI Yasushi FUJISHIMA Eiji HOASHI
author_sort	Takatoshi ASADA
title	3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
title_short	3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
title_full	3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
title_fullStr	3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
title_full_unstemmed	3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow
title_sort	3d mhd simulation of pressure drop and fluctuation in electromagnetic pump flow
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/89d78071ea4c40c481b3022a4da8a8c4
work_keys_str_mv	AT takatoshiasada 3dmhdsimulationofpressuredropandfluctuationinelectromagneticpumpflow AT rieaizawa 3dmhdsimulationofpressuredropandfluctuationinelectromagneticpumpflow AT tetsusuzuki 3dmhdsimulationofpressuredropandfluctuationinelectromagneticpumpflow AT yasushifujishima 3dmhdsimulationofpressuredropandfluctuationinelectromagneticpumpflow AT eijihoashi 3dmhdsimulationofpressuredropandfluctuationinelectromagneticpumpflow
_version_	1718409789702144000

3D MHD simulation of pressure drop and fluctuation in electromagnetic pump flow

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