A CFD analysis of an electronic box

A sealed extruded housing includes two racks and each rack contains six printed circuit boards. Two fans are installed on one of the boards, namely the fan card, in each rack. The airflow circulation created by the fans will remove the heat generated from the components on the boards. Heat is further transferred from the circulated air to the housing walls by convection and is finally dumped to the ambient by convection and radiation. A CFD analysis is performed to evaluate the proposed cooling scheme of using a fan card to cool the printed, circuit boards within the rack.