ARTICLE:

• THEORETICAL MODELISATION IN TRANSIENT CONVECTIVE HEAT TRANSFER FOR A LAMINAR BOUNDARY LAYER FLOW  download article

Mohammed Lachi
Laboratoire de Thermomécanique, Faculté des Sciences Moulin de la Housse - B.P. 1039, 51687 REIMS, FRANCE

Guillaume Polidori
Laboratoire de Thermomecanique, UTAP EA 2061, Moulin de la Housse BP 1039, 51687 Reims cedex 2, France

N. Chitou
Laboratoire de Thermomécanique, Faculté des Sciences Moulin de la Housse - B.P. 1039, 51687 REIMS, FRANCE

Jacques Padet
Laboratoire de Thermomécanique - UTAP Moulin de la housse, Faculté des Sciences, Université de Reims Champagne Ardenne, B.P. 1039, 51687 Reims cedex 2, France

ABSTRACT

Based on the energy equation formulation, a numerical simulation for characterizing the transient heat exchange between a steady laminar boundary layer and a flat sample is established. The unsteady behaviour is developed after generation of an impulsive heat flux step on the upper face of the plate. Two cases are considered according as the plate has a finite thickness or without thickness. The time and space evolution of both the surface temperature and the heat exchange coefficient is evidenced. The results are compared to the steady solution deduced from the KARMAN-POLHAUSEN method.

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