工质替代FLiBe研究涡流二极管单向特性的模化分析  

Modeling of the vortex diode's diodicity of Fli Be with alternative fluids

作　　者：吴燕华[1] 曹寅[1] 曲世祥[1] 何兆忠[1] 陈堃[1] 

机构地区：[1]中国科学院上海应用物理研究所嘉定园区,上海201800

出　　处：《核技术》2014年第11期56-59,共4页Nuclear Techniques

基　　金：中国科学院战略性先导科技专项项目(No.XDA02050000)资助

摘　　要：涡流二极管作为氟盐冷却高温堆(Fluoride-salt-cooled High-temperature Reactor,FHR)非能动余热排出系统的关键设备,其单向性将影响FHR事故工况下排出堆芯余热的能力和正常工况时堆芯的热损失。为了研究在冷却剂FLi Be熔盐工质下涡流二极管的单向特性,并解决FLi Be较强腐蚀性、高熔点直接进行实验难度较大及成本较高的问题,本文采用比较安全和便于实验的水、#22透平油和HTS-1作为FLi Be的替代工质,通过相似理论进行流体模化,并采用数值模拟方法研究模化方法的可行性。结果表明:采用HTS-1、水和#22透平油工质代替FLi Be研究相同结构尺寸涡流二极管内的单向特性是可行的。HTS-1模化FLi Be在涡流二极管内流动可实现完全相似,水和#22透平油模化FLi Be可实现部分相似。通过数值模拟初步验证部分相似模化方法是可行的。Background：Vortex diode was a critical equipment of the passive residual heat removal system.The diodicity will affect the residual heat removal capability during accident conditions and heat losses during normal operations of the fluoride-salt-cooled high-temperature reactor（FHR）.And difficulty and high cost of coolant FLi Be salt experiments are stirred up due to its strong corrosion and high melting point.Purpose：The aim is to find out whether alternative fluids that are safer and experimental friendly,such as H2 O,#22 turbine oil and HTS-1（Na NO3-Na NO2-KNO3,7%-40%-53%） could be used in the experiment to study the diodicity of the vortex diode.Methods：A fluid to fluid modeling method based on the similarity principles was adopted.In addition,the feasibility of the modeling was studied using computational fluid dynamics（CFD）.Results：The flowing condition of HTS-1 in the vortex diode can have a complete similarity to the FLi Be,and #22 turbine oil and H2 O can have a partial similarity to the FLi Be.Conclusion：It is feasible to use HTS-1,H2 O and #22 turbine oil instead of FLi Be to study the diodicity of a vortex diode with same structures.

关 键 词：氟盐冷却高温堆 非能动余热排出系统 涡流二极管 模化分析 FLIBE 

分 类 号：TL426[核科学技术—核技术及应用]