非能动安全壳外部冷却相似模拟

为了应对具有被动安全特征之先进反应堆设计中模拟验证需要,针对具有双层壳体和非能动冷却特性的安全壳结构中两壳体之间冷却流道的传热特性模拟问题,该文采用不同于常见局部现象模拟中归纳式模拟逻辑或者系统模拟中演绎式模拟逻辑的双层次构架式体系建立了模拟模型,分别在系统及局部传热传质过程的不同分析层次建立了守恒方程组。通过推导得到的表征流场状态之特征参数群,确定了流道冷却模拟的关键影响参数为功率体积比以及流体的Stanton数,并给出了相应结构参数的相似比例关系。本方法为模拟流道设计提供了理论依据和基本比例化设计参数。

Scaling for outer passive cooling channels of an advanced reactor containment

Passive safety features in advanced reactor designs use cooling channels between the double layer containment.This work presents a double-layer hierarchical model with conservation equations for both system and local phenomena in two analysis layers.A group of non-dimensional characteristic parameters are derived from the model to determine the basic design parameters for containment simulations.The volume-power ratio and the stanton number are the two most important parameters for process simulations.This work also provides design tools for different structures and mechanical criteria for facility design to reduce distortion during test.