Heat transfer and fluid flow in shrouded pin fin arrays with and without tip clearance

Numerical Simulation of Laminar Forced Convection of Pin-Fin Heat-Sink Array in a Channel by Using Porous Approach

“…The issue about the heat transfer characteristics of finned heat sinks without [1][2][3][4][5][6] or with bypass effect [7][8][9][10][11][12] attracts wide attention continuously. This work is to discuss putting the pin-fin heat-sink array into a rectangular channel in in-line arrangement with laminar side-bypass effect.…”

Influence of heating load on heat transfer characteristics in micro-pin-fin arrays

“…About this subject, Moores et al [16][17][18] investigated the effect of tip clearance on thermal and hydrodynamic performance in micro pin fins, and gave the correlation to predict the influence of tip clearance on Nu and friction factor in micro pin fins. Besides, Reinhard et al [19] evaluated the heat transfer in straight silicon microchannels with integrated in-line and staggered pin fin arrays at clearance to diameter ratios of 0.50-0.77 in the laminar flow regime at Re numbers ranging from 9.0 to 246.…”

Vortex distribution and mixed convection of liquid flow across micro-cylinders in a rectangular channel

“…At the same time, high efficient cooling technique in micro and mini spaces are requested due to the increasing power and the compactness of electronic elements. Based on this requirement, micro-cylinder-groups (pin fins) have been paid a lot of attentions in recent years as an efficient cooling structure, and many researchers [1][2][3][4][5][6][7][8][9][10] carried out various investigations on the flow and heat transfer characteristics in this structure.…”

“…Except the structure parameters, the tip clearance is another important factor in mini/micro cylinder groups or pin fins. On this subject, Moores et al [7][8][9] investigated the effect of tip clearance on thermal and hydrodynamic performance in micro pin fins, and gave the correlation to predict the influence of tip clearance on Nu and friction factor in micro pin fins. Besides, Reinhard et al [10] evaluated the heat transfer in straight silicon microchannels with integrated in-line and staggered pin fin arrays at clearance to diameter ratios of 0.50-0.77 in the laminar flow regime at Re ranging from 9.0 to 246.…”