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| MIKHAILOV,MIKHAIL D.; FREIRE,ATILA P. SILVA. |
| The present work studies, in detail, the unsteady wall-layer model of Walker et al. (1989, AIAA J., 27, 140 – 149) for the velocity profile in turbulent flows. Two new terms are included in the transcendental non-linear system of equations that is used to determine the three main model parameters. The mathematical and physical feasible domains of the model are determined as a function of the non-dimensional pressure gradient parameter (p+). An explicit parameterization is presented for the average period between bursts (), the origin of time () and the integration constant of the time dependent equation (A0) in terms of p+. In the present procedure, all working systems of differential equations are transformed, resulting in a very fast computational... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Law of the wall; Turbulent boundary layer; Unsteady model; Feasible domain; Asymptotic theory. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000402121 |
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