微小狭缝肋矩形通道多目标优化

A multi-objective optimization study of the heat transfer and flow resistance characteristics of the miniature slit ribs in a rectangular channel was carried out. Four parameters were selected as the optimization variables: the slit width, the distance between adjacent slits, and the distance between the front and rear ends of the slit and the wall surface, and the Pareto optimal solution was obtained by using the non-dominated sorting genetic algorithm (NSGA-Ⅱ). The flow and heat transfer characteristics of the miniature slit ribs under the four optimization schemes on the Pareto optimal front surface were analyzed. The results showed that the optimized miniature slit ribs provided nearly the same heat transfer as the solid ribs, while the flow resistance was reduced, and the uniform heat transfer of the ribbed wall was significantly improved.