Optimisation of Micro-Channel Heat Sink Geometry

Digital and Continuous Liquid Cooling for Electronic Systems

“…The caloric capacity will become the limiting factor at small hydraulic diameters, whereas the convective heat transfer will govern the heat transfer at large channels. It was shown in [5] that conduction effects in most practical cases, due to the relative thick wall measures are negligible.…”

“…This high power consumption and relatively high pressure drops remain critical issues especially with respect to reliability and control of the cooling system, despite the promise of achieving very low thermal resistances. In [5] it is shown that at one hand the presence of finite walls will increase the overall thermal resistance (e.g. at zAp =0.6 the thermal resistance was doubled by a The principle of electrostatic actuation of droplets in small channels is shown in Figure 6.…”

“…However, Ryu et al stated that entrance effects might have contribution up to 15 00 on the thermal resistance and therefore it might be important to take it into account when computing the cooling capacity of the heat sink [4]. Stevens et al [5] investigated the effect of microchannel aspect ratios in combination with entrance effects. In this paper it was concluded that optimal heat sink design strongly depend on the choice of optimization constraints.…”

Design Optimization and Validation of Single-Phase Rectangular Micro Channels With Axial Non-Uniform Width

“…Performance characteristics of these coolers are largely dependent on geometry. Several authors [2][3][4][5][6][7][8][9][10][11] already tackled the problem of optimizing cooling performance of single-phase heat sinks by adjusting geometric parameters. Some applied numerical methods for modeling the flow and heat transfer; others worked with analytical models.…”