Fluid Flow 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 association with a parallel fin heat sink. Components of airflow velocity in channel of the extended surfaces are presented and discussed. Pressure drop and other thermal performances are analyzed numerically by a C++ developed code based on finite differences schemes. Thermal and hydraulic characterization of heat sink under air-forced convection cooling condition are studied. The hydraulic parameters including velocity 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 distributions through the fins, base heat sink and the heat sink body. The performance of the proposed model computed by the numerical calculation is high compared to current heat sinks as expected of the previous studies.