三维模型次临界能源包层热工-水力数值研究  

Thermal-Hydraulic Numerical Study of 3D Model Subcritical Energy Blanket

作　　者：王曦 师学明[2] 

机构地区：[1]中物院聚变能源科学技术研究中心,北京100088 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《核动力工程》2018年第1期28-33,共6页Nuclear Power Engineering

基　　金：国家磁约束核聚变能源研究专项(2015GB108002)

摘　　要：针对国际热核聚变实验堆(ITER)级别聚变堆芯驱动的三维模型次临界能源包层,轻水冷却燃料及氦气冷却第一壁、轻水冷却燃料的2个热工-水力方案,采用RNG k-ε湍流模型结合流-固耦合传热方法进行数值模拟,并考虑了燃料栅元功率密度及功率展平三维分布。研究发现:氦气冷却第一壁能显著降低各固体材料的最高温度;燃料栅元最高温度大小与功率密度分布一致;功率展平利于轻水在冷却通道中等流量分配。本研究获得了足够热工裕量的热工-水力方案。Thermal hydraulic process without and with helium cooling first wall of 3D model light water cooled subcritical energy blanket driven by ITER is numerically studied with 3D distributions of fuel power density and power flattening via turbulence simulation with RNG k-ε model and fluid/solid heat transfer coupling method. The present results show that cooling the first wall with helium can significantly reduce the maximum temperatures of the solid material. The highest temperature distributions of fuel have the same variation trends as the fuel power density. Power flattening is beneficial to equally distribute the mass flow in the cooling channels. A thermal hydraulic design with enough thermal margin is obtained in this paper.

关 键 词：聚变-裂变混合堆 次临界能源包层 三维模型 热工-水力 

分 类 号：TL46[核科学技术—核技术及应用]