Simultaneous optimization of the inclination angle of the cavity, length and position of the attached very conductive fin on the heat transfer from a rectangular enclosure
Abstract
This paper examines the prospect of increasing or decreasing the heat transfer through a rectangular enclosure with an aspect ratio of 2 by optimizing its inclination angle and the parameters of a highly conductive thin fin attached to its hot surface. The enclosure is heated from below, and the dominant heat transfer mechanism within the enclosure is the free convection. Optimization is performed by particle swarm optimization algorithm. The equations of energy, continuity, and momentum for free convection heat transfer in the enclosure are discretized by the finite volume method and numerically are solved. The optimization objective is to adjust the enclosure inclination angle and the fin parameters (position and length), so that heat transfer into the cold wall becomes minimized or maximized. The attained results reveal that the heat transfer through such enclosure can be increased significantly up to 23% by slight adjustment of its inclination angle and addition of a thin fin at the proper position.
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