Title :
Comparison of different strategies for the analysis of nonlinear coupled thermo-magnetic problems under pulsed conditions [application to Tokamak coils]
Author :
Molfino, P. ; Repetto, M.
Author_Institution :
Dipartimento di Ingegneria Elettrica, Genova Univ., Italy
fDate :
3/1/1990 12:00:00 AM
Abstract :
Various possible strategies for solving coupled nonlinear thermomagnetic problems in axisymmetric or axiperiodic geometries are compared. Three methods are considered: The quasi-axisymmetric approach, finite-element discretization, and time-domain discretization. The formulation of the problem and the finite-element discretization are derived, different possible coupling strategies are described, different possible coupling strategies are described, and results obtained in the simulation of a thermomagnetic transient in a Tokamak coil are reviewed and discussed
Keywords :
Tokamak devices; coils; electromagnetic fields; electromagnetic induction; finite element analysis; fusion reactor theory and design; numerical analysis; thermal stresses; Tokamak coil; axiperiodic geometries; coupled nonlinear thermomagnetic problems; coupling strategies; current density; finite-element discretization; magnetic induction; pulsed conditions; quasi-axisymmetric approach; simulation; thermomagnetic stresses; thermomagnetic transient; time-domain discretization; Coils; Conductors; Couplings; Current density; Equations; Geometry; Thermal conductivity; Thermal stresses; Tokamaks; Toroidal magnetic fields;
Journal_Title :
Magnetics, IEEE Transactions on
