Mixed Convection Heat Transfer In A
Vertical Channel With A Moving Plate
Author(s)
A. Andreozzi, N. Bianco, O. Manca & V. Naso
Abstract
In this study a numerical investigation of mixed convection in air due to the interaction
between a buoyancy flow and a moving plate induced flow in a vertical
channel is carried out. The moving plate has a constant velocity and moves along
the buoyancy force direction whereas the principal walls of the channel are heated
with uniform heat flux. The effects of the channel spacing, heat flux and moving
plate velocity are investigated and results in terms of the channel wall and moving
plate temperatures are given. Results show that the moving plate effects are more
significant when the channel gap b is lower, for lower moving plate velocity values.
For higher moving plate velocity values these effects are more considerable for all
b values and for lower heat flux values.
Keywords: mixed convection, numerical analysis, vertical channel, moving plate.
1 Introduction
Mixed convection due to moving surfaces is very important in wide variety of
materials processing systems, such as welding, extrusion of plastics and other
polymeric materials and chemical vapor deposition [1, 2]. The greater part of
research on mixed convection with continuously moving vertical surfaces in a quiescent
fluid has been developed for singlemoving plate, as recently shown in [1-4].
A first study on continuously moving sheet was carried out in [5]. A similarity
transformation was used to obtain a solution of the boundary layer on a continuously
moving vertical surface into a quiescent ambient fluid. The buoyancy
force can affect significantly the fluid flow along a vertical moving surface and the
first studies on this topic were reported in [6, 7]. These investigations confirmed
that flow field and heat transfer from the surface significantly depended on ther-
Keywords
mixed convection, numerical analysis, vertical channel, moving plate.
Related Book
Other papers in this volume
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