1. Heat Transfer and Friction Characteristics of the Microfluidic Heat Sink with Variously-Shaped Ribs for Chip Cooling
- Author
-
Gui-Lian Wang, Da-Wei Yang, Yan Wang, Di Niu, Xiao-Lin Zhao, and Gui-Fu Ding
- Subjects
microfluidic heat sink ,micro-rib ,heat transfer ,friction factor ,Chemical technology ,TP1-1185 - Abstract
This paper experimentally and numerically investigated the heat transfer and friction characteristics of microfluidic heat sinks with variously-shaped micro-ribs, i.e., rectangular, triangular and semicircular ribs. The micro-ribs were fabricated on the sidewalls of microfluidic channels by a surface-micromachining micro-electro-mechanical system (MEMS) process and used as turbulators to improve the heat transfer rate of the microfluidic heat sink. The results indicate that the utilizing of micro-ribs provides a better heat transfer rate, but also increases the pressure drop penalty for microchannels. Furthermore, the heat transfer and friction characteristics of the microchannels are strongly affected by the rib shape. In comparison, the triangular ribbed microchannel possesses the highest Nusselt number and friction factor among the three rib types.
- Published
- 2015
- Full Text
- View/download PDF