Computational characterization of impingement flow in parallel plate heat sinks

The subject of the present work is a parallel plate heat sink that is designed so that the airflow ‘impinges’ at the fin tips and exhausts over the two open-side faces. This type of design attempts to achieve an airflow direction that is substantially opposite to the heat flow direction within the fins so as to exploit the greater heat transfer effectiveness of counter flow heat exchange. A model of the heat sink was developed with the assumption of airflow from the fin tips to the fin base. The aim is to determine the best inlet orifice geometry with regards to the heat transfer performance when the pumping power is constant and then use the same to determine the thermal resistance and pressure drop of heat sinks with different geometries.; To enhance impingement cooling, one long rectangular inlet orifice over the center of the heat sink was found to offer the best structure. (Abstract shortened by UMI.)...