TURBULENT BOUNDARY LAYERS ON MOVING, NONISOTHERMAL CONTINUOUS CYLINDERS
- 1 January 1982
- conference paper
- Published by Begell House
Abstract
An analysis is performed to study the heat transfer characteristics of buoyancy-affected two-dimensional turbulent boundary layers on nonisothermal, continuous cylindrical surfaces that move steadily through a quiescent ambient fluid. Both the cooling and heating of the continuous cylinder which either moves upwards or downwards in a horizontal, vertical or inclined direction are considered. The buoyancy force component normal to the inclined cylinder surface is neglected in comparison with the axial buoyancy force component to reduce the analysis to two dimensions. A mixing length model is used to approximate the eddy diffusivities for momentum and heat. Numerical results for the wall shear stress and surface heat transfer rate, along with the variation of the surface temperature, are presented for various combinations of Reynolds and Grashof numbers for fluids with a Prandtl number of 0.7.Keywords
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