关键词: 聚变堆, 包层, 磁流体, 氚输运

Abstract:

Based on the COMSOL multiphysics software, a three dimensional simulation, coupling magnetic field, fluent and tritium profile fields, is carried out. In this simulation, a rectangle channel lithium lead flow is adopted to study the tritium dynamic of liquid lead lithium in a strong magnetic field. It shows that a strong jet flow appears near the conducting walls which are parallel to the magnetic field, the flows in core and near Hartmann wall remain stagnant. Therefore, the conduction effect of jet flow produces a rather lower tritium concentration near the conducting wall and a higher tritium concentration near Hartmann wall and in the core due to flow stagnancy. Hence, an asymmetrical volumetric tritium distribution is resulted.

Key words: Fusion reactor, Blankets, MHD, Tritium transport