Shape optimization of a channels with opposite and single wall roughened by staggered arrays of dimples is performed to enhance turbulent heat transfer compromising with friction drag. The response surface based optimization method is used as an optim...
Shape optimization of a channels with opposite and single wall roughened by staggered arrays of dimples is performed to enhance turbulent heat transfer compromising with friction drag. The response surface based optimization method is used as an optimization technique with Reynolds-averaged Navier-Stokes analysis of fluid flow and heat transfer with shear stress transport (SST) turbulence model. The dimple depth-to-dimple print diameter ratio, channel height-to-dimple print diameter ratio and dimple print diameter-to-pitch ratio are chosen as design variables. The objective function is defined as a linear combination of heat transfer related term and friction loss related term with a weighting factor. Latin Hypercube Sampling is used to determined the training points as a mean of the design of experiment. The optimum shape remarkable performance in comparison with a reference shape.