熱流動の随伴解析に基づいたコンパクト熱交換器の形状最適設計(熱工学,内燃機関,動力など)

概要

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An adjoint-based shape optimization method of heat exchanger, which takes into account the heat transfer performance with the pressure loss penalty, is proposed, and its effectiveness is examined through a series of numerical simulation. The undulated heat transfer surface under an isothermal heated condition is optimized based on the variational method with the first derivative of the cost function, which is determined by an adjoint analysis of momentum and heat transfer. When applied to a modeled heat-exchanger passage with a pair of oblique wavy walls, the present optimization method refines the duct shape in a phased manner so as to enhance the wall shear while suppressing the flow separation. It is shown that the j/f factor is further increased by 4% from the best value of the initial obliquely wavy duct. The effects of the wave amplitude, which is initially assumed, upon the shape evolution process are also investigated.
社団法人日本機械学会の論文
2007-08-25