PARAMETRIC CALCULATIONS OF THE FIRST WALL THERMAL RESPONSE DURING PLASMA DISRUPTIONS FOR THE NET
The expected high energy fluxes on the first wall during plasma disruptions make it necessary to evaluate the thermal response of the first wall material. A model to predict material evaporation and melting, even considering the vapour shielding effect, was developed assuming that the plasma ions and electrons are slowed down by the vapour. The model takes into account both the phase changes, solid-liquid and the liquid-vapour of the wall material. The dynamic of the plasma collapse is treated either as a function of time or as a constant during the disruptive event. The time evolution of the shielding effect is given as a function of the thermal energy released by the plasma. Specific results obtained by using the numerical values as working hypotheses for the NET project are given for AISI 316SS and graphite impregnated with SiC.
Bibliographic Reference: REPORT RT-FUS19-87, AVAILABILITY: ENEA, ROMA
Record Number: 1989126087700 / Last updated on: 1989-05-01
Available languages: en