Thermal performances of protrusion-pyramid arrays in a parallel flow
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This study discusses thermal performances of the Protrusion-Pyramid Array (PPA) in a parallel flow. The PPA consists of the protrusions and the inverted pyramids in an inline array. The 3D CFD thermal-fluid model of the PPA is generated, verified by the measurement, and utilized to explore parametric influences on the PPA. It is found that the PPA enhances nearly 1.8 times of heat transfer, comparing with a smooth surface, with the PP diameter of 2.5mm at Re of 1200. The study also finds that the net PPA performance, considering both heat transfer enhancement and pressure loss, is approximately 1.2 times superior to the smooth surface associated with the PP heights of 2 and 2.5mm and the PP diameters of 3.5 and 4mm at Re ranging from 800 to 1600.
Abstract
This study discusses thermal performances of the Protrusion-Pyramid Array (PPA) in a parallel flow. The PPA consists of the protrusions and the inverted pyramids in an inline array. The 3D CFD thermal-fluid model of the PPA is generated, verified by the measurement, and utilized to explore parametric influences on the PPA. It is found that the PPA enhances nearly 1.8 times of heat transfer, comparing with a smooth surface, with the PP diameter of 2.5mm at Re of 1200. The study also finds that the net PPA performance, considering both heat transfer enhancement and pressure loss, is approximately 1.2 times superior to the smooth surface associated with the PP heights of 2 and 2.5mm and the PP diameters of 3.5 and 4mm at Re ranging from 800 to 1600.
참고문헌 (10)
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