The influence of external body forces on the molten depths in tungsten during simulated plasma disruptions
Plasma facing components in tokamak type fusion reactors are subjected to intense heat loads during plasma disruptions, causing melting evaporation of the metallic surface layer. Simultaneously, large eddy currents are induced in the plasma facing components which interact with the large background magnetic field, hence producing substantial electromagnetic loads which have a strong influence on component integrity and life time. The depths and shapes of the molten layers of pure tungsten metal that are produced when a high heat load strikes the surface of the material during a plasma disruption under the simultaneous influence of external body forces arising from electromagnetic fields, were studied by using a two-dimensional transient computer program which solves the equations of continuity, momentum and energy, with monotonically varying external body forces. Results are presented for a range of energy densities, disruption times and gradients of linearly varying external body forces.
Bibliographic Reference: Article: Fusion Technology (1997)
Record Number: 199711163 / Last updated on: 1997-09-23
Original language: en
Available languages: en