Exploració per tema "Magnetohidrodinàmica"
Ara es mostren els items 1-20 de 25
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Advances in the physics studies for the JT-60SA tokamak exploitation and research plan
(2020-01-01)
Article
Accés obertJT-60SA, the largest tokamak that will operate before ITER, has been designed and built jointly by Japan and Europe, and is due to start operation in 2020. Its main missions are to support ITER exploitation and to contribute ... -
An approach to verification and validation of MHD codes for fusion applications
(2015-11)
Article
Accés obertWe propose a new activity on verification and validation (V&V) of MHD codes presently employed by the fusion community as a predictive capability tool for liquid metal cooling applications, such as liquid metal blankets. ... -
Analysis of an unconditionally convergent stabilized finite element formulation for incompressible magnetohydrodynamics
(2015-11)
Article
Accés obertIn this work, we analyze a recently proposed stabilized finite element formulation for the approximation of the resistive magnetohydrodynamics equations. The novelty of this formulation with respect to existing ones is the ... -
Analysis of flow channel insert deformations influence on the liquid metal flow in DCLL blanket channels
(2020-08-01)
Article
Accés obertThe dual coolant lithium lead (DCLL) is a candidate to be an effective breeding blanket (BB) concept for nuclear fusion technologies. One critical point of this design is the magnetohydrodynamic (MHD) effects involving ... -
Analysis of the growth rate of heliospheric magnetic flux rope instabilities
(Universitat Politècnica de Catalunya, 2022-05-19)
Treball Final de Grau
Accés obert
Realitzat a/amb: Goddard Space Flight CenterLes cordes de flux magnètic heliosfèriques (MFRs) són considerades les estructures internes fonamentals de les Ejeccions de Massa Coronal Interplanetàries (ICMEs). Aquest treball es centra en determinar si donada una corda ... -
Anàlisi de les estratègies de simulació transitòria de fluxos de metall líquid en condicions de convecció mixta i sota la influència d’un camp magnètic
(Universitat Politècnica de Catalunya, 2019-05-17)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorEl present treball pretén analitzar de manera experimental el comportament de les simulacions transitòries en la resolució de problemes de flux de metall líquid en condicions de convecció mixta i sota la influència d’un ... -
Approximation of the inductionless MHD system with finite element techniques
(Universitat Politècnica de Catalunya, 2010-06-01)
Projecte Final de Màster Oficial
Accés obertIn this work, a stabilized formulation to solve the inductionless magnetohydrodynamic (MHD) problem using the finite element method is presented. The important feature of this formulation resides in the design of the ... -
Basics of magnetohydrodynamics
(Universitat Politècnica de Catalunya / Nagaoka University of Technology, 2013)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorIn the present work the basic principles of a MHD channel are described through the development of a simulation and the interpretation of its results. The MHD channel is modeled through the Euler conservation equations for ... -
Block recursive LU preconditioners for the thermally coupled incompressible inductionless MHD problem
(2013)
Report de recerca
Accés obertThe thermally coupled incompressible inductionless magnetohydrodynamics (MHD) problem models the ow of an electrically charged fuid under the in uence of an external electromagnetic eld with thermal coupling. This system ... -
Development of a simulation tool for MHD flows under nuclear fusion conditions
(Universitat Politècnica de Catalunya, 2011-12-01)
Tesi
Accés obertIn Nuclear Fusion Technology, MHD flows can be encountered in liquid metal (LM) breeding blankets, the part of a fusion reactor where tritium, one of the fusion fuels, is to be produced. There are several types of LM ... -
Estudi i resolució de les equacions de massa, quantitat de moviment i energia sotmeses a un camp magnètic. Identificació de possibles aplicacions
(Universitat Politècnica de Catalunya, 2014-09)
Projecte/Treball Final de Carrera
Accés obertEl projecte consisteix en l’estudi de la interacció entre la dinàmica de fluids i l’electromagnetisme, enfocada des d’un punt de vista numèric en comptes d’experimental. Per una banda, la dinàmica de fluids és una branca ... -
Experimental techniques in determination of electron cyclotron power deposition profiles in thermonuclear plasmas
(Universitat Politècnica de Catalunya / Politecnico di Milano, 2014)
Projecte/Treball Final de Carrera
Accés obertElectron cyclotron waves are widely used in magnetic confinement devices, specially in those involved in nuclear fusion research, to heat the electrons and achieve the ignition temperature. A still unsolved issue is ... -
Fully nonlinear mode competition in magnetised Taylor-Couette flow
(2020-08-25)
Article
Accés obertWe study the nonlinear mode competition of various spiral instabilities in magnetised Taylor-Couette flow. The resulting finite-amplitude mixed-mode solution branches are tracked using the annular-parallelogram periodic ... -
Generation of bursting magnetic fields by nonperiodic torsional flows
(American Institute of Physics (AIP), 2019-11-26)
Article
Accés obertA mechanism for the cyclic generation of bursts of magnetic fields by nonlinear torsional flows of complex time dependence but very simple spatial structure is described. These flows were obtained numerically as axisymmetric ... -
Intermittent chaotic flows in the weakly magnetised spherical Couette system
(2021-12)
Article
Accés obertExperiments on the magnetised spherical Couette system are presently being carried out at Helmholtz-Zentrum Dresden-Rossendorf (HZDR). A liquid metal (GaInSn) is confined within two differentially rotating spheres and ... -
MHD issues related to the use of Lithium Lead eutectic as breeder material for blankets of fusion power plants
(2015-04-01)
Article
Accés restringit per política de l'editorialThe European Community is committed to the development of a DEMOnstration fusion power plant whose operation could start as soon as 2050. The blanket is one of the most critical components in a fusion reactor; three of the ... -
Non-linear magnetohydrodynamic simulations of plasma instabilities from pellet injection in Large Helical Device plasma
(2019-08-13)
Article
Accés obertThe effect of pellets on the global magnetohydrodynamic (MHD) dynamics of the Large Helical Device (LHD), which is a large superconducting heliotron in Japan, has been analyzed with the MIPS code. A pellet ablation model ... -
Non-linear simulations of MHD instabilities in tokamak plasma
(Universitat Politècnica de Catalunya, 2022-07-11)
Projecte Final de Màster Oficial
Accés obertThe MHD Infrastructure for Plasma Simulation code, MIPS code, is the non-linear MHD (magnetohydrodynamics) code oriented to study the properties of magnetically confined plasma. In this project the MIPS code has been ... -
Numerical simulation of magnetohydrodynamic flows and its application to in-vessel components of a fusion reactor
(Universitat Politècnica de Catalunya, 2023-06)
Projecte Final de Màster Oficial
Accés obertNuclear fusion, the process that could potentially bring clean, abundant, and virtually limitless power generation on Earth, has been a subject of intense research and exploration for decades. Among the scientific difficulties ... -
Numerical simulations of passive scalar advection in MHD turbulence using OpenFOAM
(Universitat Politècnica de Catalunya, 2021-11-01)
Treball Final de Grau
Accés obertOne of the biggest challenges has ever faced in human history is to be self-sufficient in terms of energy. In the context of the global warming, it is important to find sustainable solutions for our growing need on energy ...