Natural Convection Flow Visualization and Heat Transfer from a Horizontal Circular Disk.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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The study of natural convection incorporates a flow visualization procedure, with heat transfer experiments on a circular mirror like surface, in a cylindrical enclosure. A flow visualization procedure using Thymol Blue sodium salt in distilled water was conducted. Photographs are presented which show the cellular flow pattern on the horizontal test surface and the nature of the flow in the plume. Problems applying the flow visualization technique are discussed. Photographs are presented which show the effect of voltage on a laminar natural convection flow in the plume. Transition to turbulence in the plume was observed. Experimental results are presented for the heat transfer from the horizontal circular disk. This data was compared to previously reported results and the agreement was good. Modified author abstract