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http://dx.doi.org/10.6112/kscfe.2017.22.1.026

GEOMETRICAL EFFECTS ON THERMAL-HYDRAULIC PERFORMANCE OF A MULTIPLE JET IMPINGEMENT COOLING SYSTEM IN A DIVERTOR OF NUCLEAR FUSION REACTOR  

Jung, H.Y. (Dept. of Mechanical Engineering, Graduate School, Inha University)
Kim, K.Y. (Dept. of Mechanical Engineering, Inha University)
Publication Information
Journal of computational fluids engineering / v.22, no.1, 2017 , pp. 26-36 More about this Journal
Abstract
A numerical study has been performed to evaluate thermal-hydraulic performance of a finger type cooling module with multiple-jet impingement in a divertor of nuclear fusion reactor. To analyze conjugate heat transfer in both solid and fluid domains, numerical analysis of the flow using three-dimensional Reynolds-averaged Navier-Stokes equations has been performed with shear stress transport turbulence model. The computational domain for the cooling module consisted of a single fluid domain and three solid domains; tile, thimble, and cartridge. The numerical results for the temperature variation on the tile were validated in comparison with experimental data under the same conditions. A parametric study was performed with four geometric parameters, i.e., angles between x-axis and centerlines of hole 1, 2, 3 and 4. The results indicate that the heat transfer rate was increased by 2.7% and 0.7% by the angle ${\theta}_1$ and angle ${\theta}_2$, respectively, and that the pressure drop was decreased by up to 1.8% by the angle ${\theta}_3$.
Keywords
He-cooled Divertor; Multiple Jet Impingement Cooling; Nuclear Fusion Reactor; Reynolds-Averaged Navier-Stokes Equations;
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