蒸汽发生器三维热工水力特性分析程序SGTH-Porous3D研发及应用  

Development and Application of 3D Steam Generator Thermohydraulics Analysis Code SGTH-Porous3D

作　　者：丛腾龙 从正 刘茂龙 肖瑶[1] 郭辉 顾汉洋[1] CONG Tenglong;CONG Zheng;LIU Maolong;XIAO Yao;GUO Hui;GU Hanyang(School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;College of Nuclear Science and Technology,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]上海交通大学核科学与工程学院,上海200240 [2]哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

出　　处：《原子能科学技术》2022年第11期2306-2317,共12页Atomic Energy Science and Technology

基　　金：国家自然科学基金(11705035)。

摘　　要：准确预测蒸汽发生器的管内外耦合传热、管内流量分配及管外三维流动传热对U形管和螺旋管蒸汽发生器的传热和结构优化设计具有重要意义。本文基于多孔介质两流体模型研发了通用蒸汽发生器三维热工水力特性分析程序SGTH-Porous3D,并利用实验数据对程序进行了验证。提出了基于局部坐标系的直管、U形弯头和螺旋管管束通用多孔介质参数化方法,建立了壳侧三维粗网格分析模型以及适用于U形管、螺旋管的管内单相、两相流动传热模型,发展了管侧流体三维并联多通道简化方法以及管壳侧跨尺寸网格数据映射和耦合传热方法。结果表明:SGTH-Porous3D程序可预测U形管和螺旋管等多型蒸汽发生器管、壳侧三维流动传热特性,可支撑蒸汽发生器的三维传热设计和流致振动分析。As the pressure and heat transfer boundaries between primary and secondary sides,the steam generator(SG)should be integrated during operation.However,SG suffers from the problems including vibration,wear,fatigue and corrosion,which will lead to the degradation of tubes and other components and may lead to the failure of SG.The research on the degradation of SG is associated with many disciplines,including thermohydraulics,structural mechanics,water chemistry and materials science,among these,the thermohydraulics are the foundation of other analysis.In the current work,SGTH-Porous3D,a 3D steam generator thermohydraulics analysis code based on two-fluid porous media model,was developed for the prediction of 3D thermohydraulics in the U-tube SG(UTSG)and helical coiled SG(HCSG).First,the two-fluid porous media model for the straight tube,U-bend and helical tube bundle was proposed for the general application of UTSG and HCSG.A velocity projection method was employed to estimate the flow resistance and heat transfer for inclined sweeping flow over different types of tubes.With these models,the 3D numerical strategy based on coarse mesh was developed for the shell side of SG.Second,as for the tube side flow,the parallel 3D multi-channel model was used to simplify the numerous spatially distributed tubes.The effects of centrifugal force were considered by employing the flow resistance and heat transfer maps specially developed for U-bend and helical shaped tubes.Finally,a data mapping method was also developed for the tube-to-shell side heat transfer between cells of different spatial scales.A partial relaxation scheme was used to accelerate the convergence of coupled heat transfer,where the heat flux was relaxed while the temperature wasn’t.The experiment data from the Westinghouse MB-2 UTSG,the KAERI HCSG and the SJTU-NETH HCSG were used for code validation.The SGTH-Porous3D code was applied to predict the 3D thermal-hydraulics parameters in the CAP1400 SG.The distributions of thermal-hydraulics parameters for each

关 键 词：多孔介质模型 两流体模型 U形管蒸汽发生器 螺旋管蒸汽发生器 计算两相流体动力学 热工水力分析 耦合传热 

分 类 号：TL353[核科学技术—核技术及应用]