H110 STUDIES ON NATURAL CONVECTION INDUCED FLOW AND THERMAL BEHAVIOR INSIDE ELECTRONIC EQUIPMENT CABINET MODEL(Electronics cooling-2)

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Over the past years, steady progress has been made in the field of Computational Fluid Dynamics (CFD). Also, recent advances in high performance computing are set to revolutionize Computational Fluid Dynamics. The recent high speed and large memory computer architecture made it possible to use CFD as a true electronic "wind tunnel" to gather understanding about the flow and thermal behavior of many complicated flow. In the present work, an important basic flow phenomena, the natural convection induced flow, is studied experimentally and numerically. Experiments were carried out to study the effect of the outlet vent opening area, the distance between the location of outlet opening and the heat source on the flow and thermal behavior in the natural convection air cooling of electronic equipment cabinet model. In the numerical study, three-dimensional Navier-Stokes equations along with the temperature equation are solved on the basis of finite difference method. Generalized coordinate system is used so that sufficient grid resolution could be achieved in the body surface boundary layer region. Differential terms with respect to time are approximated by forward differences, diffusions terms are approximated by the implicit Euler form, convection terms in the Navier-Stokes equations are approximated by the third order upwind difference scheme. The heat flux at the body surface of heater is specified. The results of calculation showed a satisfactory agreement with measured data and led to a good understanding of the overall flow and thermal behavior inside electronic equipment cabinet model which is very difficult, if not impossible, to gather by experiment.
一般社団法人日本機械学会の論文
2000-10-01

H110 STUDIES ON NATURAL CONVECTION INDUCED FLOW AND THERMAL BEHAVIOR INSIDE ELECTRONIC EQUIPMENT CABINET MODEL(Electronics cooling-2)

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