Numerical simulation of flow heat transfer in water-cooled radiators with perforated fins
In this paper,the thermal performance of traditional straight-fin heat sink was optimised,and COMSOL simula-tion was used to study the heat transfer performance of perforated straight-fin heat sink under different optimisation strategies.The effect of heat sink flow on the thermal performance was investigated by varying the aperture diameter,pitch,thickness and height of the fins,and the limiting heat flow density was derived.The results show that perforation is conducive to improving the thermal performance.At the optimum aperture diameter of 1 mm,the thermal performance is increased by 8％compared with straight fins.In the conditions of the fin aperture of 1 mm,spacing 0.2 mm,thickness of l mm and height of 3 mm,there is the best thermal performance.Its ultimate heat flow density is 226.5 W/cm2 at the maximum flow rate of 1.5 Umin,which is 71％higher than that of the traditional straight-fin finned radiator.
Water-cooled radiatorPerforated finsFin parametersUltimate heat flow density
NETL
NSTL
万方数据
