Flow field optimization and design for a Spallation Neutron Source target cooling system

作     者：HAO JunHong CHEN Qun XU YunChao LU YouLian JI Quan 

作者机构：Key Laboratory for Thermal Science and Power Engineering of Ministry of EducationDepartment of Engineering MechanicsTsinghua University Institute of High Energy PhysicsChinese Academy of Sciences 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 51006060, 51036003) the Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No.201150) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第6期

页      码：1370-1376页

摘      要：Cooling water is an important part in a Spallation Neutron Source target cooling system, but the unstable vortexes at the exits of the slits between every two tungsten target slices have a negative impact on the stable running of the target system. We apply the field synergy principle for fluid flow to obtain the optimal flow field, which has a uniform velocity distribution without eddy, and then, optimize the geometrical structure of the cooling water flow channel based on the optimal flow field. The results show that when the cooling water flows in the optimized channel, the eddy sizes decrease, the time fluctuations of velocity and pressure almost vanish, and the volume flow rates of the cooling water in each parallel slit are uniform. Therefore, it effectively improves the running stability of the target system with the premise of satisfying the target heat load.

主 题 词：spallation neutron source target cooling system flow channel design field synergy equation 

学科分类：08[工学] 0827[工学-食品科学与工程类] 082701[082701] 

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