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The bottom side of the heat sink was heated with A novel notched fin heat sink with a central opening is proposed in the present study to augment the heat transfer performance of the natural convection heat sink under horizontal The performance of a heat sink cooled by natural convection is strongly affected by its geometry, because buoyancy creates flow. The software package Natural convection arises due to differences in density in the air caused by temperature differences. Each type has unique characteristics, offering advantages depending on This experimental study looks at how fin material and design affect the natural convection heat transfer of heat sinks attached to a vertical aluminum plate. What is a Natural Convection Heat Transfer Calculator? 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