密閉筐体内に配列された水平加熱平板まわりの自然対流熱伝達 : 加熱平板の配置と流動特性(熱工学,内燃機関,動力など)

概要

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In this paper, natural convection in an enclosure which two parallel heated plates are included is investigated experimentally. We consider the experimental model stated as follows: two heated plates arranged in the vertical direction: the surface of heated plates have constant heat flux: the temperature of ceiling is kept for cooling: the other sides have thermal insulation boundary condition. The relevance of the flow in the enclosure and the heat transfer characteristics from each heated surface was presented. In the area of between cooled ceiling and heated surface, vortex motion arises when the ascending flow from the upper plates and the accompanying flow to the rising flow from lower area are interfered. Heat transfer around heated surface is enhanced by the vortex motion. In the other areas, the flow is circulated along the heated surface, and average Nusselt number is proportional to modified Rayleigh number at the power in general.
2010-04-25