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http://dx.doi.org/10.5293/KFMA.2007.10.2.007

Shape Optimization of Cooling Channel with V-shaped Ribs  

Lee, Young-Mo (인하대학교 대학원 기계공학과)
Kim, Kwang-Yong (인하대학교 기계공학부)
Publication Information
Abstract
A numerical procedure for optimizing the shape of three-dimensional channel with V-shaped ribs extruded on both walls has been carried out to enhance the turbulent heat transfer. The response surface based optimization is used as an optimization technique with Reynolds-averaged Wavier-stoked analysis. Shear stress transport (SST) turbulence model is used as a turbulence closure. Computational results for average heat transfer rate show good agreements with experimental data. The objective function is defined as a linear combination of heat transfer and friction loss-related terms with a weighting factor. Three dimensionless variables such as, rib pitch-to-rib height ratio, rib height-to-channel height ratio, and the attack angle of the rib are chosen as design variables. Nineteen training points obtained by D-optimal designs for three design variables construct a reliable response surface. In the sensitivity analysis, it is found that the objective function is most sensitive to the ratio of rib height-to-channel height ratio. And, optimal values of design variables have been obtained in a range of the weighting factor.
Keywords
Shape optimization; V-shaped rib; Turbulent heat transfer; Response surface method; Navier-Stokes analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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