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Normal and cross-flow Reynolds stresses: differences between confined and semi-confined flows

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.140
7 pages

Matthias H. Buschmann
Institut für Luft- und Kältetechnik gGmbH, Bertolt-Brecht-Allee 20, 01309 Dresden, Germany

Tobias Kempe
Technische Universitat Dresden, Institute of Fluidmechanics, Mommsenstr. 13 01069, Dresden, Germany

Th. Indinger
Technische Universität München, Institute of Aerodynamics, Boltzmannstr. 15, 85748 Garching, Germany

Mohamed Gad-el-Hak
Virginia Commonwealth University, Mechanical Engineering Richmond, VA 23284-3015, USA


The general scope of the present work is to quantify the characteristics of wall-normal and spanwise Reynolds stresses, which might be different for confined and semi-confined flows. Especially the peak position of wall-normal stress and a shoulder never described in detail before are investigated. It is found that the positions of the v-peak and the w-shoulder are different. However, the upper end of the logarithmic region seems to be closely related position of the v-peak. The w-shoulder occurs always above the v-peak and covers a significantly large portion of the entire wall-layer.

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