The Axisymmetric Free-convection Heat Transfer Along a Vertical Thin Cylinder with Constant Surface Temperature
The Axisymmetric Free-convection Heat Transfer Along a Vertical Thin Cylinder with Constant Surface Temperature

Author: Raymond Viskanta

Publisher:

Published: 1963

Total Pages: 56

ISBN-13:

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Laminar free-convection flow produced by a heated, vertical, circular cylinder for which the temperature at the outer surface of the cylinder is assumed to be uniform is analyzed. The solution of the boundary-layer equations was obtained by the perturbation method of Sparrow and Gregg, which is valid only for small values of the axial distance parameter xi ; and the integral method of Hama et al., for large values of the parameter xi . Heat-transfer results were calculated for Prandtl numbers (Pr) of 100, the Nusselt numbers (Nu) for the cylinder were higher than those for the flat plate, and this difference increased as Pr decreased. It was also found that the perturbation method of solution of the free-convection boundary-layer equations becomes useless for small values of Pr because of the slow convergence of the series. The results obtained by the integral method were in good agreement with those calculated by the perturbation method for Pr approximately 1 and 0.1

Natural Convection from Circular Cylinders
Natural Convection from Circular Cylinders

Author: Sandra K. S. Boetcher

Publisher: Springer

Published: 2014-08-05

Total Pages: 57

ISBN-13: 3319081322

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This book presents a concise, yet thorough, reference for all heat transfer coefficient correlations and data for all types of cylinders: vertical, horizontal, and inclined. This book covers all natural convection heat transfer laws for vertical and inclined cylinders and is an excellent resource for engineers working in the area of heat transfer engineering.

Study of Free Convective Heat Transfer at Ex Tremely High Prandtl Numbers from Horizontal Heated Cylinders
Study of Free Convective Heat Transfer at Ex Tremely High Prandtl Numbers from Horizontal Heated Cylinders

Author: Jerry N. Mason

Publisher:

Published: 1963

Total Pages: 74

ISBN-13:

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This study dealt with transient heat transfer from heated horizontal cylinders to a hydrocarbon polymer of high viscosity. It had been predicted analytically that during transient free con vection the thermal boundary layer would grow in size during the conduction phase of the flow and then shrink to some steady state value as fluion began. It had also been predicted that the film heat transfer coefficient would reach a minium and then increase to some steady state value. A series of seven tests on one fourth inch diameter cylinders and six tests on wires of thirty-two hundreths inches in diam eter showed experimentally that the predictions occurred. The similiarity laws were shown to be applicable to steady state free convection from horizontal cylinders to the high viscosity fluid. From the plot of log Nusselt number vs log Prandtl x Grashof numbers an equation was obtained. (Author).

Theory and Applications of Viscous Fluid Flows
Theory and Applications of Viscous Fluid Flows

Author: Radyadour Kh. Zeytounian

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 498

ISBN-13: 3662104474

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This book closes the gap between standard undergraduate texts on fluid mechanics and monographical publications devoted to specific aspects of viscous fluid flows. Each chapter serves as an introduction to a special topic that will facilitate later application by readers in their research work.