Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (11): 110602-110602.doi: 10.11889/j.0253-3219.2014.hjs.37.110602

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

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

WU Yanhua CAO Yin QU Shixiang HE Zhaozhong CHEN Kun   

  1. (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China)
  • Received:2014-07-08 Revised:2014-07-15 Online:2014-11-10 Published:2014-11-07

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.

Key words: Fluoride-salt-cooled high-temperature reactor (FHR), Passive residual heat removal system, Vortex diode, Modeling, FliBe