SHAPE OPTIMIZATION OF INTERNAL COOLING CHANNEL WITH STEPPED CIRCULAR PIN-FINS

단을 가진 원형 핀휜이 부착된 냉각유로의 형상 최적 설계

This study presents a numerical procedure to optimize the shape of stepped circular pin-fins to enhance turbulent heat transfer. The KRG method is used as an optimization technique with Reynolds-averaged Navier-Stokes analysis of fluid flow and heat transfer with shear stress transport turbulent model. The objective function is defined as a linear combination of heat transfer and friction loss related terms with a weighting factor. Ten training points are obtained by Latin Hypercube Sampling for two design variables. Optimum shape has been successfully obtained with the increased objective function.