JP Journal of Heat and Mass Transfer
Volume 18, Issue 1, Pages 133 - 144
(October 2019) http://dx.doi.org/10.17654/HM018010133 |
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NUMERICAL SIMULATION OF FORCED CONVECTION IN AN ENCLOSURE
Mehmet Turgay Pamuk
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Abstract: In this paper, forced convection in a rectangular enclosure used as an electrical cabinet has been studied numerically using the commercial software Fluent©. Heat generating components such as frequency drivers and contactors are installed in the enclosure, each dissipating a heat flux rate in the order of maximum 350W/m2 that has to be disposed of due to the requirements of reliable functioning of these components as well as preventing fire hazards. As the heat generated in the small volume of the enclosure may be considerably high, natural convection rarely suffices to provide the necessary cooling. Instead, air is moved through the enclosure causing it to interact with the component surfaces, thus benefiting the principles of forced convection. For this purpose, an inlet opening is cut off from one of the walls of the enclosure and another opening with a fan on an opposite side wall is cut off. It has been shown that the flow rate of the fan plays an important role in the enclosure cooling as well as the location of the openings. Comparison of the Nusselt numbers belonging to enclosures with differently located openings gives invaluable information in design of an optimal electrical cabinet layout. |
Keywords and phrases: heat transfer, forced convection, enclosure.
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