论文部分内容阅读
压水反应堆本体结构热工水力特性的CFD数值模型的准确建立是实现数字化反应堆的关键技术之一。采用等流通截面积方法简化了控制棒导向筒内部几何结构,通过多孔介质模型对堆芯燃料组件结构进行了简化,在此基础上建立了“华龙一号”反应堆本体结构的整体CFD分析模型。模拟结果表明,堆内流场不具备对称性,进行整体CFD模型建立和分析非常必要,所建立的“华龙一号”反应堆整体CFD模型计算得到的热工水力特性合理,可为反应堆安全运行提供有效的参考数据。
The accurate establishment of CFD numerical model of thermal hydraulic characteristics of pressurized water reactor body structure is one of the key technologies to realize digital reactor. The flow cross-sectional area method is adopted to simplify the internal geometry of the control rod guide tube, and the core fuel assembly structure is simplified by the porous medium model. Based on this, the overall CFD analysis of the “Hualong No.1” reactor body structure is established model. The simulation results show that the flow field in the reactor is not symmetrical and it is necessary to establish and analyze the overall CFD model. The thermomechanical properties calculated by the integrated CFD model established by the “Hualong I” reactor are reasonable and can be used for reactor safety Operation provides a valid reference data.