摘要
主换热器是核供热堆一、二回路之间进行热交换的关键设备。其温度分布和流速分布对主换热器的设计有重要意义。该文采用数值分析的办法进行计算时把主换热器在二维网络中划分成 4个区 ,将整个计算简化成在一定流量场下计算温度场和在一定温度场下计算流量场两部分。计算温度场时要列出热平衡方程组 ,计算流量场时要涉及到压降平衡方程组 ,由于方程组是非线性的 ,采用了 Newton迭代法进行计算。在计算温度场和流量场的同时也得到了传热系数和线性热功率的分布。
The Primary Heat Exchanger (PHE) is a key component of the Nuclear Heating Reactor(NHR), which transfers heat from the primary circuit to the secondary circuit. The temperature field and the flow field in the PHE are very important for the PHE design. The flow field and the temperature field were analyzed numerically. The U tubes are first divided into 4 regions in a planar network. The calculation can be divided into two parts, calculating the temperature field with a given flow field and calculating the flow field with a given temperature field. The temperature field is calculated using the energy balance equation. The flow field is calculated using pressure drop balance equations. Newton iteration is used to solve the non linear equations. The results describe the thermal power distribution and the heat transfer coefficient.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2000年第12期33-36,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"八五"科技攻关项目 !(85 - 2 12 - 0 1- 0 1)
