Critical heat flux analysis of divertor cooling flow channel in fusion reactor with CFD method

Situated at the bottom of vacuum vessel, divertor extracts heat and ash produced by fusion reaction, minimizes plasma contamination, protects surrounding walls from thermal neutronic loads. The vertical targets are designed to be able for up 20 MW/m2 high flux. It is a great ordeal both material performance cooling ability. Critical flux margin very crucial during design divertor. ANSYS FLUENT used in this paper predict critical on monoblock structure with twisted tape inside tube. Numerical results validated corresponding sets experimental results. In paper, CFD method channel was first introduced. On other hand, influence inlet subcooling studied detail. affect much complicated single-side heated swirl flow channel. Whether influencing trend or locations occurrence different under sub-cooling. derivations between simulation were no more than 32%. This study proves tools can provide efficient help understanding phenomenon complex construction.