Browsing by Subject "Magnetohidrodinàmica"
Now showing items 1-20 of 23
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Advances in the physics studies for the JT-60SA tokamak exploitation and research plan
(2020-01-01)
Article
Open AccessJT-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
Open AccessWe 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
Open AccessIn 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
Open AccessThe 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)
Bachelor thesis
Open Access
Covenantee: 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)
Master thesis
Restricted access - author's decisionEl 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)
Master thesis
Open AccessIn 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)
Master thesis (pre-Bologna period)
Restricted access - author's decisionIn 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)
Research report
Open AccessThe 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)
Doctoral thesis
Open AccessIn 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)
Master thesis (pre-Bologna period)
Open AccessEl 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)
Master thesis (pre-Bologna period)
Open AccessElectron 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
Open AccessWe 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
Open AccessA 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
Open AccessExperiments 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
Restricted access - publisher's policyThe 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
Open AccessThe 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)
Master thesis
Open AccessThe 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 simulations of passive scalar advection in MHD turbulence using OpenFOAM
(Universitat Politècnica de Catalunya, 2021-11-01)
Bachelor thesis
Open AccessOne 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 ... -
On the use of CFD to obtain head loss coefficients in hydraulic systems and its application to liquid metal MHD flows in nuclear fusion reactor blankets
(2021-12-01)
Article
Open AccessWhen an incompressible fluid flows through a contraction in a conduit, the increase in the kinetic energy of the fluid is accompanied by a pressure drop. This pressure drop is not to be assimilated with head loss. If ...
