基于垂直磁场压缩的EAST等离子体初步研究

 基于等离子体参数随大半径/小半径变化的规律，分析了电流平顶段垂直磁场与相关等离子体参数的关系。垂直磁场的非线性部分用于分析非感应电流驱动效应，包括自举电流效应。此外，对于给定的等离子体电流，推导了平顶段垂直磁场与线平均密度之间的关系，并进一步研究压缩后的等离子体。基于EAST第41195次放电的数据分析表明，垂直磁场强度的增大可以使得等离子体温度、密度、βp和自举电流份额获得提升，为等离子体参数高参数，特别是βp提供了一种可能性参考。

Coupled heat transfer characteristics study of multi-flow field between lead lithium and helium gas for liquid blanket breeder zone of fusion reactor

The coupled heat transfer of multi-flow field in liquid blanket breeder zone of fusion reactor has been simulated by three-dimension computational fluid dynamics (CFD) method. The filling-evacuating high-pressure helium-cooled loop and the heat exchange test module have been built, and the contrast experiments of coupled heat transfer of multi-flow field have been implemented for validating numerical calculation results. The flow and heat transfer characteristics, and its effect on the condition of varied helium gas operational pressure and liquid lead lithium inlet temperature, nuclear heat power density in breeder zone were studied. The heat transfer coefficient and correlation formula of helium and RAFM steel surface, liquid lead lithium and RAFM steel surface were presented. The results will be beneficial for the design, research and development of liquid blanket.