ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
TURBULENT BOUNDARY LAYERS ON MOVING, NONISOTHERMAL CONTINUOUS CYLINDERS
Sinopsis
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.