Least material optimization of natural-convective heat sinks

Experimental and numerical study on the heat sink with radial fins and a concentric ring subject to natural convection

“…The radiation heat transfer from the heat sink is also accounted by setting the emissivity of the heat sink surface at 0.8 [6]. …”

“…(6) has been generally considered as the participating parameter for the Nusselt number in the previous studies [6]. In case of circumferentially aligned radial fins, the angular displacement between neighboring fins imposes non-uniformity on the spacing between neighboring fins.…”

“…Many investigations have focused on the design of heat sinks with rectangular base and fins subject to natural convection [4][5][6][7][8][9]. A correlation for predicting the convection heat transfer around a rectangular heat sink was presented [4].…”

“…A correlation for predicting the convection heat transfer around a rectangular heat sink was presented [4]. Numerous optimization designs are proposed to investigate the thermal performances of heat sinks with rectangular base and fins [5][6][7][8][9]. Most of these studies are concerned with heat sinks with rectangular bases, which might be inefficient for cooling circular LED lights [10] due to LED lights being generally circular.…”

Orientation effects on thermal performance of radial heat sinks with a concentric ring subject to natural convection

“…Studies on the design of natural convective heat sinks have been extensively carried out based on both experimental and numerical methods [4][5][6][7][8][9]. Yuncu and Anbar [4] and Dayan et al [5] experimentally investigated the performance of horizontally oriented natural convective heat sink with rectangular base and fins.…”