Analysis of convective momentum and wall heat transfer: application to vortex boundary layer interaction |
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Authors: | Xavier Escriva |
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Affiliation: | a CERFACS, 42, Avenue Gaspard Coriolis, 31057 Toulouse Cedex 1, France b Université Paul Sabatier, Institut de Mécanique des Fluides de Toulouse, UMR 5502 CNRS/INP/UPS, 118, Route de Narbonne, 31062 Toulouse Cedex, France |
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Abstract: | The main topic of this paper is the analysis of momentum and heat transfer mechanisms occurring inside a disturbed boundary layer. This analysis is carried out based on a phenomenological decomposition using von Karman’s integral equations, in which appear terms that account for several contributions: the flat plate term, and the unsteady and external gradient terms.This method is applied to the interaction between a single transverse vortex and a boundary layer developing on a flat plate. Based on numerical simulations, we present a qualitative and quantitative study of the behavior of momentum and heat wall transfer described by the terms resulting from the phenomenological decomposition. Finally, the time-dependent behavior of the analogy factor is investigated. |
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Keywords: | Wall transfer Skin friction Heat flux Vortex boundary layer interaction Analogy factor |
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