Experimental and Computational Analysis of Heat Transfer Performance of Different Ribs Shapes in Forced Convection

In applications such as gas turbine blades, electronic cooling devices, heat exchangers and gas-cooled nuclear reactor fuel pins high inlet temperatures has n major impact on components. Insertion of increases the production of turbulent kinetic energy, which improves turbulent heat transfer in the channel. Hence evaluating different shapes will help finding optimum geometry for enhancement in heat transfer. Based on the numerical analysis done by [10]Mi-Ae Moon, Min-Jung Park and Kwang-Yong Kim, the heat transfer and friction loss performances of rib roughened rectangular cooling channels having rib of different shapes has been experimentally & numerically investigated by varying the pitch to width rib ratio and varying turbulent flow regime. The channel aspect ratio (AR = W/H) is 4. The Ribs shapes considered a) Square, b) House shaped and c) Boot shaped ribs. The effects of the Reynolds number and rib pitch-to-width ratio on the performances of various ribs is to be investigated for Reynolds numbers of 12000–32000 at rib spacing of 20mm, 40mm, 50mm respectively. ANSYS 15.0 is used as a tool for computational analysis. The comparative study considering the flat duct with the different shapes ribs showed Boot shaped ribs perform better in terms of heat transfer and friction loss performances.