Shape Optimization of A Mixing Vane to Enhance Turbulent Heat Transfer in Subchannel of Nuclear Reactor

초록

In the present work, shape of mixing vane is optimized numerically using three-dimensional Reynolds-averaged Navier-Stokes analysis of flow and heat transfer. Standard k-ε model is used as a turbulence closure. Response surface method is employed as an optimization technique. The objective function is defined as a combination of heat transfer rate and inverse of friction loss. Bend and twist angles of mixing vane are selected as design variables. Optimum shape of mixing vane shows the better performance than the commercialized split vane.