TCB混合堆Li自冷包层MHD流动设计

从磁流体动力学ＭＨＤ压降的物理原理出发，对ＴＣＢ商用混合堆Ｌｉ自冷包层的ＭＨＤ流动方式进行了改进，提出了第一壁环向流动（平行环向磁场流动），核燃料增殖区径向流动的ＭＨＤ流动的设计，以解决混合堆为改善堆的经济性而采取提高包层核燃料富集度的途径所速来的热工，ＭＨＤ压降和安全问题。分析和数值计算结果表明，第一壁环向流动设计可以满足包层核燃料富集度从０．５％增加到１％，相应的热功率从４５００ＭＷ增加到...

MHD Flow Design for Liquid Lithium Self-Cooled Blanket of Breeder

From magnetohydrodynamic (MHD) pressure drop principle, we have improved the MHD folw regime in Li self-cooled blanket of Tokamak Commercial Breeder (TCB). The MHD flow of the toroidal flow, i. e. the flow parallel to toroidal magnetic field direction, in the first wall and radial flow in the breeding zones have been designed so as to solve thermal hydraulics, MHD pressure drop and safety problems, Caused by increasing nuclear fuel concentration in blanket in order to improve breeder economics. Analyses and calculations indicate that the toroidal flow in the first wall and the radial flow in the breeding zones can satisfy the requirements of thermal hydraulic and MHD pressure drop when the nuclear fuel concentration in blanket increases from 0.5% to 1.0%, corresponding to thermal power range of 4500 to 7900 MW. The maximum MHD pressure drop, the maximum temperature of the first wall and the maximum temperature between first wall structural materials and liquid lithium allow a large of margin. if this flow model is applied to Tokamak Engineering Test Breeder (TETB) lithium self-cooled blanket design, TETB reactor can operate under pressure condition of 1.5 MPa.