Validation of computational fluid dynamics (CFD) tools for the development of a helium-cooled divertor

A helium-cooled divertor concept for future power plants to be build after ITER is investigated at the Forschungszentrum Karlsruhe [1]. Simulations by computational fluid dynamics (CFD) programs show that the divertor is capable of removing a heat load of 10 MW/m2 at least at an acceptable pumping power. idate the simulation results, experiments in the helium loop, Helium Blanket Test Loop (HEBLO), are run under conditions less severe than the operational ones in the fusion reactor. The results of these test campaigns are presented and compared to the simulations. The agreement is good.