scispace - formally typeset
Search or ask a question
Proceedings ArticleDOI

Transient magnetic — Translating motion finite element model of the Annular Linear Induction Pump

TL;DR: In this article, a study of the performance of a double-sided ALIP in bloc pumping with finite element transient magnetic translation motion coupling models is presented, and the dependence on flowrate of pumping efficiency is presented and a view regarding the maximum capabilities of such devices of converting electrical energy into motion.
Abstract: In the context of replacing the mechanical pumps with high flowrate Annular Linear Induction Pumps (ALIP) for the Generation IV of nuclear plants in France, the paper constitutes a study of startup, steady state operation and dynamic behavior of a double sided ALIP in bloc pumping assumption, based on finite element transient magnetic — translation motion coupling models. Using a model of pump load proportional with the square of the flowrate, the Electromagnetic Pressure — Flowrate characteristic was determined and considered further in expressing what a stable pump operating state represents. Data regarding the highest admissible jump load are given. The dependence on flowrate of pumping efficiency is presented and provides with a view regarding the maximum capabilities of such devices of converting electrical energy into motion.

Content maybe subject to copyright    Report

Citations
More filters
Dissertation
29 Jan 2014
TL;DR: In this article, Pression et al. proposed a model for the induction of a quatrieme generation of reacteurs nucleaires, which can be seen as an extension of the one proposed in this paper.
Abstract: Les preoccupations actuelles concernant l'exploitation securitaire des centrales nucleaires existantes et la conception d’architectures speciales envisagees pour la quatrieme generation de reacteurs nucleaires se combinent avec l’interet plus prononce pour l'efficacite et la fiabilite de l'equipement d'un systeme energetique. Cela fait que dans un souci de meilleure comprehension et optimisation basee sur des moyens modernes de conception assistee par l’ordinateur, l'etude de differentes parties de ces systemes fait de plus en plus l’objet de recherches approfondies. . Parmi les types proposes pour la quatrieme generation de reacteurs nucleaires font partie ceux ayant comme agent de refroidissement les sels fondus, respectivement le sodium fondu. En raison de leurs proprietes physiques, les sels fondus et le sodium liquide ont le potentiel d'etre deplaces par les pompes electromagnetiques. Cet ouvrage est a la fois une etude approfondie des phenomenes qui se produisent en raison de l'ecoulement du fluide dans le champ electromagnetique d’une pompe electromagnetique - interaction magnetohydrodynamique - et un rapport sur les capacites et les avantages des outils informatiques modernes pour faciliter la conception et l'optimisation des pompes electromagnetiques. Afin d’atteindre l'objectif principal de la these, notamment une meilleure comprehension des phenomenes interdependants specifique a l’operation des pompes electromagnetiques, deux objectifs secondaires ont ete consideres. Le premier objectif concerne la pleine exploitation des modeles electromagnetiques numeriques en elements finis afin d'obtenir autant d'informations que possible sur le comportement des pompes electromagnetiques, dans l’hypothese ou on ne tient pas compte de l'ecoulement des fluides. Le deuxieme objectif etait la construction des modeles numeriques qui reunissent l’electromagnetisme et la dynamique des fluides, respectivement des modeles numeriques qui regroupent les deux phenomenes caracterisant l’ecoulement magnetohydrodynamique dans les canaux des pompes electromagnetiques. Dans l'etude dediee au pompage electromagnetique de sels fondus, la these met en evidence des problemes specifiques lies a la generation de forces electromagnetiques dans les fluides faibles conducteurs d'electricite et fournit des resultats sur les applications ou le pompage electromagnetique de sels fondus peut etre efficace. A l’aide des modeles electromagnetiques nous avons obtenu des informations importantes sur l'influence du nombre de poles electromagnetiques et de la frequence d’alimentation sur la caracteristique Pression - Vitesse des pompes annulaires a induction. Ils ont ete analyses le phenomene de blindage cree par les parois metalliques - avec des repercussions negatives sur les performances de la pompe, les effets de freinage exerces a l'entree et a la sortie du canal de la pompe et la relation entre la capacite de surcharge hydrodynamique et la caracteristique Pression - Vitesse des pompes a induction. Une section speciale a ete consacree a l'analyse de la dependance de la force electromagnetique du temps et de l’espace et a l’etude de non-uniformitees des quantites de nature electromagnetique en direction azimutale dans les pompes annulaires a induction.Dans le chapitre qui traite de l'interaction magnetohydrodynamique a base de modeles couples, ils sont proposes deux modeles qui couplent l'electromagnetisme et l’ecoulement. Ils sont presentes les avantages des modeles couples, en matiere de la precision des resultats, par rapport aux modeles electromagnetiques. Il est egalement presente l'evolution des profils de vitesse, de densite de force et de courant sous l'influence du champ electromagnetique et de l’ecoulement de sodium a vitesses differentes. Les contributions de la these sont completees par des observations importantes sur les methodes de travail et les logiciels utilises tout au long de l'etude.

7 citations


Cites background from "Transient magnetic — Translating mo..."

  • ...2 Dynamic answer of the pump for sudden load increase, [154]...

    [...]

Proceedings ArticleDOI
24 Apr 2017
TL;DR: In this paper, the authors considered modelling electromechanical feature of magnetohydrodynamic pump based on double side linear motors and verified magnetic equivalent circuit was verified by finite elements method for two-and three-dimensional formulation of problems in software Comsol Multiphysics 5.2.
Abstract: In the paper considered modelling electromechanical feature of magnetohydrodynamic pump based on double side linear motors. Method detailed magnetic equivalent circuit was verified by finite elements method for two- and three-dimensional formulation of problems in software Comsol Multiphysics 5.2. Results characteristic compared with experimental data obtained on laboratory installation of magnetohydrodynamic. The relevance of simulation is that the installation applies in many metallurgical industries. magnetohydrodynamic pumps allows non-contact work on metal, that may improve work flow.

6 citations


Additional excerpts

  • ...Similar comparisons were made in articles only for mathematic models[8, 9]....

    [...]

Proceedings ArticleDOI
06 Jun 2013
TL;DR: In this paper, the results of the analysis of the magnetohydrodynamic interaction in the sodium pumping channel of annular linear induction Pumps are presented, where the authors refer to the iterative solving process, flattening of the velocity radial profile along the pumping channel, structure of the force density along the channel thickness and the magnetic field entrainment effect that flow exerts, and an electromagnetic study of the pump transient start-up, steady sate regime, braking effects, dynamical behavior at sudden load jumps.
Abstract: The work refers to the most representative results obtained with respect to the analysis of the magnetohydrodynamic interaction in the sodium pumping channel of Annular Linear Induction Pumps. It is given an analysis of a given size pump in order to obtain the optimal couple supply frequency - number of poles when a maximum pumping force at high flow rates is required. An electromagnetic study of the pump transient start-up, steady sate regime, braking effects, dynamical behavior at sudden load jumps is done. The results of a fully coupled numerical model for the magnetohydrodynamic interaction analysis are presented. They refer to the iterative solving process, flattening of the velocity radial profile along the pumping channel, structure of the force density along the channel thickness and the magnetic field entrainment effect that flow exerts.

4 citations

Proceedings ArticleDOI
23 May 2013
TL;DR: In this article, the tridimensional electromagnetic field structure of a single-sided ANNULAR linear induction pump (ALIP) was studied based on 3D finite elements models in the block pumping assumption.
Abstract: The work studies the tridimensional electromagnetic field structure of a single sided Annular Linear Induction Pump (ALIP), based on 3D finite elements models in the “block pumping” assumption. It treats the time variation of the pumping force and gives qualitative and quantitative information about the braking forces occurring at the inlet, outlet and along the pump. There are given data about the distance between magnetic cores effect over the azimuth non-uniformity of the electromagnetic quantities.

3 citations

References
More filters
Journal ArticleDOI
TL;DR: A large capacity sodium-immersed self-cooled electromagnetic pump (LEMP) was developed for application to the main circulation pumps of FBR in this paper, which is a submergible annular linear induction pump designed to be selfcooled by immersing into sodium and applying high temperature electrical insulation.
Abstract: A large capacity sodium-immersed self-cooled electromagnetic pump (LEMP) was developed for application to the main circulation pumps of FBR. This advanced LEMP is a submergible annular linear induction pump designed to be self-cooled by immersing into sodium and applying high temperature electrical insulation. Almost all the internal electrical losses were transferred to the surrounding sodium, which can be recovered as electricity by turbine generators. The LEMP having specifications of 160m3/min flow rate, 0.28 MPa head and more than 40% efficiency at the rating was designed, fabricated and tested in the sodium pump test facility. The test involves magnetic field measurement in the air and a variety of sodium tests during 2,550 h, which demonstrated good pump performance and flow controllability, and satisfied the design target. The boundary between flow stability and instability of the LEMP operation could be defined by peak position of the Q-H curve, which was specified by Rem×S (magnetic Reynolds' nu...

42 citations


"Transient magnetic — Translating mo..." refers background in this paper

  • ...In the context of transportation liquid sodium as a coolant agent in the intermediate heat exchange circuits with ALIPs, many papers are devoted to study the global characteristics [1-3], and instability issues [4-5]....

    [...]

Journal ArticleDOI
TL;DR: In this paper, an experimental and analytical study of the magnetohydrodynamic instability arising in an annular linear induction pump was performed. And the experimental results showed that the instability occurs when the magnetic Reynolds number is larger than unity and the instability becomes more intensive as the slip increases.

41 citations

Journal ArticleDOI
TL;DR: In this paper, an experiment and a numerical analysis are carried out to verify the pump winding phase shift that is expected as an effective way to suppress the magnetohydrodynamic instability arising in an annular linear induction pump: the instability is accompanied with a low frequency pressure pulsation in the range of 0-10 Hz when the magnetic Reynolds number is larger than unity.

24 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe a two dimensional numerical model for analysis of the local and integral characteristics of linear electromagnetic pumps, such as magnetic field distribution, pressure developed, amplitude of pressure pulsation with double supply frequency and distribution of liquid metal velocity over the azimuth.

20 citations

Journal ArticleDOI
TL;DR: In this paper, the design of an electromagnetic pump for liquid metal is optimized for both electrodynamics and fluid-dynamics of the liquid metal, in order to take into account the finite length of the pump and consequently decrease of efficiency.
Abstract: The design of an electromagnetic pump for liquid metal is optimized. The model includes both electrodynamics and fluid-dynamics of the liquid metal. End effects are included in the model, in order to take into account the finite length of the pump and consequently the decrease of efficiency. For the Electrodynamic model, the permeability of the ferromagnetic core is assumed to be infinite. A finite slot configuration of the primary windings is assumed. In the design problem considered, the optimization regards the electrical supply system, the pump dimensions and the slot configuration.

19 citations


"Transient magnetic — Translating mo..." refers background in this paper

  • ...In the context of transportation liquid sodium as a coolant agent in the intermediate heat exchange circuits with ALIPs, many papers are devoted to study the global characteristics [1-3], and instability issues [4-5]....

    [...]