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Heating and partial coolingproblems in unsteady forced convection

Published online by Cambridge University Press:  15 December 1998

G. Polidori ,
J. Padet ,
G. Polidori  and
J. Padet
G. Polidori
Affiliation:
Laboratoire de Thermomécanique, UTAP, Faculté des Sciences, 51687 Reims Cedex 2, France
J. Padet
Affiliation:
Laboratoire de Thermomécanique, UTAP, Faculté des Sciences, 51687 Reims Cedex 2, France
G. Polidori
Affiliation:
Laboratoire de Thermomécanique, UTAP, Faculté des Sciences, 51687 Reims Cedex 2, France
J. Padet
Affiliation:
Laboratoire de Thermomécanique, UTAP, Faculté des Sciences, 51687 Reims Cedex 2, France
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Abstract

The study of thermoconvective problems in a laminar external boundary layer flow is theoretically presented for both partial heating and cooling situations after that the fluid/wall system has already reached a first steady heating state. The 4th order Karman-Pohlhausen integral approach is used under the hypothesis that the thermal boundary layer thickness is assumed to be steady during the transient phase. The final mathematical equation for both cooling and heating problems is proposed and exemples of space and time corresponding thermograms are given.

Keywords

Type
Rapid Communication
Information
The European Physical Journal - Applied Physics , Volume 4 , Issue 3 , December 1998 , pp. 235 - 238
Copyright
© EDP Sciences, 1998

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