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Some properties of truncated turbulence signals in bounded shear flows

Published online by Cambridge University Press:  29 March 2006

Robert S. Brodkey ,
James M. Wallace  and
Helmut Eckelmann
Robert S. Brodkey
Affiliation:
Department of Chemical Engineering, The Ohio State University, Columbus
James M. Wallace
Affiliation:
Max-Planck-Institut fur Strömungsforschung, Göttingen, West Germany
Helmut Eckelmann
Affiliation:
Max-Planck-Institut fur Strömungsforschung, Göttingen, West Germany
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Abstract

Earlier measurements of the contribution of four distinct classes of motions, i.e. (u < 0, v > 0), (u > 0, v < 0), (u < 0, v < 0) and (u > 0, v > 0), to the Reynolds stress $-\rho \overline{uv}$ in the wall region of a bounded turbulent shear flow have been extended. These classes were obtained by truncating the u and v signals about zero. Various statistical properties of the truncated streamwise and normal velocity components u and v and of their product uv have been determined in an attempt to characterize quantitatively the motions in this flow. Average values and probability density distributions both of the truncated and untruncated signals have been taken.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 63 , Issue 2 , 3 April 1974 , pp. 209 - 224
Copyright
© 1974 Cambridge University Press

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