水利水电技术2018，Vol.49Issue(5)：63-67,5.DOI:10.13928/j.cnki.wrahe.2018.05.010
去离子冷却水系统布水器的数值模拟及试验研究
Numerical simulation and experimental study on water diffuser of deionized cooling-water system
摘要
Abstract
The deionized water with the temperature below 10 ℃ is required to take away the thermal load inside of magnet during the operation of the Steady High Magnetic Field Facilities (SHMFF).Through the optimization of the type and dimension of the water diffuser inside of chilled-water storage tank for enhancing the stratified chilled-water storage efficiency and increasing the operation time of magnetic device,5 types of radial water diffusers are selected according to the design calculation under the guidance of the relevant theory,and then the thermocline thicknesses of the octagonal and radial water diffusers installed inside of the same chilled-water storage tank are studied with the method of numerical simulation.The method for calculating the water-diffusing efficiency is defined,while the diffusing effect of water diffuser is analyzed by taking the water-diffusing efficiency as the evaluation index.The study shows that the diffusing effect of the radial water diffuser is better than that of the octagonal one under the condition of the same Re,and then is more prone to create a stable thermocline.For the same outlet flowrate,the water diffusing efficiency of the radial water diffuser with the type of 200-7.5 is 89％,while that of the radial water diffuser with the type of 375-4 is 84.2％.Therefore,the ratio of height to diameter of the radial water diffuser is an important factor to influence the thickness of the thermocline inside of the chilled-water storage tank.The study result provides a guiding basis for the optimal design of the radial water diffuser for chilled-water storage system.关键词
数值模拟/径向型布水器/八角型布水器/去离子水/CFD软件/自然分层水蓄冷技术/雷诺数/弗汝德数Key words
numerical simulation/radial water diffuser/octagonal water diffuser/deionized water/CFD software/natural stratified water-storage technology/Reynolds number/Froude number分类
化学工程引用本文复制引用
石玉洋,唐佳丽,欧阳峥嵘..去离子冷却水系统布水器的数值模拟及试验研究[J].水利水电技术,2018,49(5):63-67,5.基金项目
国家“十一五”重大科技基础设施建设项目“稳态强磁场实验装置”(07DQCC0901) （07DQCC0901）
