Heat Transfer and Fluid Flow Characteristics from Finite Height Circular Cylinder Mounted on Horizontal Plate

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• 作者：Hemant Naik ; ^{me14d014@iitm.ac.in" class="auth_mail" title="E-mail the corresponding author} ; Shaligram Tiwari
• 关键词：Flow separation ; finite circular cylinder ; perimeter-averaged Nusselt number ; height-averaged Nusselt number.
• 刊名：Procedia Engineering
• 出版年：2015
• 出版时间：2015
• 年：2015
• 卷：127
• 期：Complete
• 页码：71-78
• 全文大小：5355 K

文摘

Present study deals with three-dimensional numerical investigations of flow and heat transfer characteristics around a finite height circular cylinder mounted on a horizontal plate. Uniform flow has been assumed at the inlet which develops and flows across the cylinder. Flow separation has been observed from the leading edge of free-end of the cylinder, sides of the cylinder and in upstream nearer to the cylinder just above the bottom plate. Cylinder and bottom plate are maintained at constant temperature which is higher than the free stream temperature of the fluid. The study has been carried out for a cylinder with aspect ratio (ratio of height to diameter) of 3 and Reynolds number (Re) in the range of 40 to 100. Detailed flow patterns have been presented in the form of time-averaged streamlines in different planes. Temperature and Nusselt number contours have also been presented near the bottom plate. In addition, variation of perimeter-averaged Nusselt number along the height of the cylinder and variation of height-averaged Nusselt number around the cylinder have been presented.