Numerical study of heat transfer enhancement using transverse microchannels in a heat sink

作者：Soleimanikutanaei Soheil; Ghasemisahebi Esmaiil^*; Lin Cheng Xian^*

来源：International Journal of Thermal Sciences, 2018, 125: 89-100.

DOI：10.1016/j.ijthermalsci.2017.11.009

• Transverse microchannels
• Heat transfer enhancement
• Conjugate heat transfer
• Electronic cooling

In this study, the heat transfer enhancement through the use of transverse microchannels in a heat sink is investigated systematically by numerical simulations. The heat transfer in both fluid and solid regions are modeled by a three-dimensional conjugate heat transfer approach. The effects of various parameters, such as the height and density (number) of transverse microchannels and Reynolds numbers, on the pressure drop, temperature distribution and heat transfer rate inside the heat sink are investigated. The results indicate that the temperature distribution and the location of hotspots are dependent on the number and size of transverse microchannels at different Reynolds numbers. Effects of various parameters on the figure of merit for the transverse microchannels are also presented, and correlations for prediction of the friction factor and Nusselt number have been proposed within the investigated parameter ranges.

• 出版日期2018-3