Numerical study on hydraulic and thermal characteristics of a minichannel heat sink with impinging air flow

Abstract

In this study impingement air cooling mode of forced convection is adopted for heat dissipation from high power electronic devices in associated with a parallel fin heat sink. Components of airflow velocity in the channel of the extended surfaces are discussed. Pressure drop and other thermal performances are analyzed numerically by a C++ developed code. Thermal and hydraulic characteriza tion of heat sink under cooling condition of air-forced con vection is studied. The hydraulic parameters including ve locity profiles, distribution of static pressure and pressure drop through the heat sink are analyzed and presented schematically. Furthermore, the thermal characteristic of the aluminum approach of cooling is studied by utilizing the contours of the three dimensional temperature distribu tions through the fins, base heat sink and the heat sink body. The performance of the proposed model com puted by the numerical calculation is high compared to current heat sinks as expected of the previous studies.

http://dx.doi.org/10.5755/j01.mech.17.2.331