Shape optimization and mechanism of transverse groove for drag reduction based on genetic algorithm
An optimization approach based on free-form deformation technology and genetic algorithm was proposed for the shape optimization of two-dimensional transverse groove for drag reduction.The triangle was employed as the origin groove section,which was geometrically parameterized based on free-form deformation.The minimum groove drag force calculated by flow field simulation was used as optimization goal,while the genetic algorithm was adopted as the optimization method.The optimization results illustrated that the drag reduction rate of the optimized groove was improved from 6.4％to 10.1％at 0.8 Mach,compared with the origin triangular groove.The optimization approach indicated that the free-form deformation method and genetic algorithm can expand the design space for shape optimization of the drag reduction groove.The present work demonstrates a new approach for shape optimization of groove.
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