A new approach for the study of the overlap layer of wallturbulence is proposed. The multi-dimensional description of turbulence given by the Kolmogorov equation generalized to wall-flows is used and shown relevant for the identification of very robust features of the overlap layer. Numerical data of a turbulent channel are used. Despite the low Reynolds, a well-defined outer energy source region appears. The possibility to analyze its effects on the energy tranfer among scales and wall-distances is shown important to clarify the influences of the external region on the inner layer.

Study of the outer self-regeneration of turbulence in wall flows / Cimarelli, A.; De Angelis, Elisabetta; Talamelli, A.; Casciola, C.M.. - ELETTRONICO. - 149:(2014), pp. 85-89. (Intervento presentato al convegno 5th iTi Conference in Turbulence, 2012 tenutosi a Bertinoro (FC) nel 2012) [10.1007/978-3-319-01860-7_14].

Study of the outer self-regeneration of turbulence in wall flows

CIMARELLI, ANDREA;DE ANGELIS, ELISABETTA;TALAMELLI, ALESSANDRO;
2014

Abstract

A new approach for the study of the overlap layer of wallturbulence is proposed. The multi-dimensional description of turbulence given by the Kolmogorov equation generalized to wall-flows is used and shown relevant for the identification of very robust features of the overlap layer. Numerical data of a turbulent channel are used. Despite the low Reynolds, a well-defined outer energy source region appears. The possibility to analyze its effects on the energy tranfer among scales and wall-distances is shown important to clarify the influences of the external region on the inner layer.
2014
Springer Proceedings in Physics
85
89
Study of the outer self-regeneration of turbulence in wall flows / Cimarelli, A.; De Angelis, Elisabetta; Talamelli, A.; Casciola, C.M.. - ELETTRONICO. - 149:(2014), pp. 85-89. (Intervento presentato al convegno 5th iTi Conference in Turbulence, 2012 tenutosi a Bertinoro (FC) nel 2012) [10.1007/978-3-319-01860-7_14].
Cimarelli, A.; De Angelis, Elisabetta; Talamelli, A.; Casciola, C.M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/568950
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