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S7 Empacotamento Eletrônico |
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Title:
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NATURAL CONVECTION IN A VERTICAL CAVITY WITH HEAT SOURCES SIMULATING ELECTRONIC COMPONENTS
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Summary :
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ABSTRACT. IN THIS WORK THE EFFECT OF NATURAL CONVECTION ON THE FLUID FLOW AND HEAT TRANSFER IN A VERTICAL CAVITY WITH TWO PROTRUDING HEAT SOURCES SIMULATING ELECTRONIC COMPONENTS IS STUDIED NUMERICALLY. THE VERTICAL WALLS ARE ASSUMED ADIABATIC AND THE FLOW IS CONSIDERED TWO-DIMENSIONAL, LAMINAR, IN STEADY STATE AND WITH CONSTANT PHYSICAL PROPERTIES. THE BOUSSINESQ APPROXIMATION IS ADOPTED TO OBTAIN THE GOVERNING ELLIPTIC EQUATIONS, WHICH ARE DISCRETIZED BY USING THE FINITE CONTROL VOLUMES METHOD WITH THE SIMPLE ALGORITHM. THE VELOCITY AND TEMPERATURE FIELDS ARE OBTAINED, AS WELL AS THE TEMPERATURE VARIATIONS ALONG THE WALL WHERE THE SOURCES ARE MOUNTED AND THE AVERAGE NUSSELT NUMBER AS A FUNCTION OF THE POWER DISSIPATED, THE DISTRIBUTION OF THE POWER IN THE SOURCES, THE SPACING BETWEEN THE SOURCES AND THE CAVITY ASPECT RATIO. WITH THE RESULTS OBTAINED IT IS POSSIBLE TO DEFINE A CONFIGURATION IN WHICH THE COMPONENTS (SOURCES) EXHIBIT LOWER TEMPERATURE LEVELS THUS REDUCING THE POSSIBILITY OF FAILURE.
KEY WORDS: NATURAL CONVECTION, ELECTRONIC COMPONENTS, THERMAL CAVITY.
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Author :
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Milanez, Luiz Fernando
Ramos, Ricardo Alan Verdú
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Paper View :
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