The onset of nucleate boiling in the flow of water through a microchannel heat sink was investigated. The microchannels considered were 275 lm wide by 636 lm deep. Onset of nucleate boiling was identified with a high-speed imaging system and the heat flux at incipience was measured under various flow conditions. An analytical model was developed to predict the incipient heat flux as well as the...

In this study, the three-dimensional fluid flow and heat transfer in a rectangular micro-channel heat sink are analyzed numerically using water as the cooling fluid. The heat sink consists of a 1-cm silicon wafer. The micro-channels have a width of 57 lm and a depth of 180 lm, and are separated by a 43 lm wall. A numerical code based on the finite difference method and the SIMPLE algorithm is d...

Study of thermo-hydraulic characteristics a novel microchannel heat sink having flow disrupting pins is numerically and experimentally carried out in this paper. Cylindrical are inserted from top cover into the rectangular instead conventional technique pin-fins originating base microchannel. Initially, effect pin diameter on performance studied optimum established, later enhanced (PE-MCHS) com...

Microchannel heat sinks are an efficient cooling method for semiconductor packages. However, to properly cool increasingly complex and thermally dense circuits, microchannel designs should be improved expanded on. In this paper, with secondary channels ribs investigated using computational fluid dynamics coupled a multi-objective optimization algorithm determine propose optimal solutions based ...

The present study investigates the thermo-hydraulic characteristics of a microchannel sink with novel trefoil Shaped ribs. motivation for this form rib shape is taken from design lung alveoli that exchange oxygen and carbon dioxide. This has been conducted numerically by using code commercially available Fluent software. shaped ribs were mounted on centerline different walls in three configurat...