熔盐堆稳态物理-热工耦合计算研究

Neutronics and Thermal-hydraulics Coupling Analysis of Molten Salt Reactor at Steady State

采用基于任意三角形网格解析基函数展开法的三维扩散堆芯物理计算和采用并联多通道模型的堆芯热工水力计算,开发了石墨慢化的通道式熔盐堆的物理-热工耦合计算程序。针对美国熔盐堆实验(MSRE),用橡树岭国家实验室技术报告中的结果验证了程序的正确性,并计算分析了在稳态情况下MSRE堆芯中的三维功率分布、流量分配以及熔盐和石墨的温度分布。

A coupled neutronics and thermal-hydraulics code was developed for the graphite-moderated channel-type molten salt reactor.Analytic basis functions expansion nodal method in triangular geometry and multiple-channel model were employed for the reactor physics calculation and thermal-hydraulics calculation respectively.For the molten salt reactor experiment（MSRE）,the results from the ORNL technical report were used for code validation.In addition,the 3Dpower distribution,mass flow distribution,temperature of molten salt and graphite were calculated at steady state.