中国铅基研究实验堆主容器初步地震响应分析

Preliminary Analysisfor Seismic Response of the Main Vessel of China Lead-Based Research Reactor

中国铅基研究实验堆(CLEAR-Ⅰ)为铅铋合金冷却的一体化池式结构,地震情况下高密度液态铅铋晃动引起的流固耦合效应会对主容器结构产生影响。本文基于双向流固耦合方法,在ANSYS Workbench仿真环境下计算了CLEAR-Ⅰ主容器对典型地震激励的响应,得到了层流模型(None(laminar))和k-ε模型(k-Epsilon)下结构的位移响应与应力响应。结果表明,考虑地震载荷和铅铋合金重量的情况下,CLEAR-Ⅰ主容器抗震设计性能良好,能够维持结构的完整性。

China Lead-,based research reactor （CLEAR-I） is an integrative pool-type reactor, which uses liquid lead-,bismuth alloy as coolant. Under earthquakes, the fluid-solid coupling effect caused by denser liquid metal could have significant impact on the structure of the main vessel. Based on two-way fluid-solid coupling, seismic response of the main vessel is calculated under ANSYS Workbench simulation environment. Through comparison of laminar model and K-ε turbulence model, the responses of structure to typical seismic acceleration excitation are analyzed, including deformation and equivalent stress. The results demonstrate that, considering seismic load and liquid metal, the seismic design of main vessel possesses sufficient functional and structural integrity.