Modeling of the vortex diode’s diodicity of FliBe with alternative fluids

WU Yanhua; CAO Yin; QU Shixiang; HE Zhaozhong; CHEN Kun

doi:10.11889/j.0253-3219.2014.hjs.37.110602

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Modeling of the vortex diode’s diodicity of FliBe with alternative fluids

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- Modeling of the vortex diode’s diodicity of FliBe with alternative fluids
- NUCLEAR TECHNIQUES Vol. 37, Issue 11, Article number: 110602(2014)
- 作者机构：
  
  中国科学院上海应用物理研究所嘉定园区,上海,201800
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.110602
  CLC：
- Published：07 November 2014
- 稿件说明：
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WU Yanhua, CAO Yin, QU Shixiang, et al. Modeling of the vortex diode’s diodicity of FliBe with alternative fluids[J]. Nuclear techniques, 2014, 37(11): 110602
DOI：

WU Yanhua, CAO Yin, QU Shixiang, et al. Modeling of the vortex diode’s diodicity of FliBe with alternative fluids[J]. Nuclear techniques, 2014, 37(11): 110602 DOI： 10.11889/j.0253-3219.2014.hjs.37.110602.

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FLiBe熔盐工质下涡流二极管的单向特性，并解决FLiBe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FLiBe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FLiBe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FLiBe在涡流二极管内流动可实现完全相似，水和#22透平油模化FLiBe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。

Abstract

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 FLiBe 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 H2O

#22 turbine oil and HTS-1 (NaNO3-NaNO2-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 FLiBe

and #22 turbine oil and H2O can have a partial similarity to the FLiBe. Conclusion: It is feasible to use HTS-1

H2O and #22 turbine oil instead of FLiBe to study the diodicity of a vortex diode with same structures. Abstract

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