Scalings of the outer energy source of wall-turbulence
Cimarelli A, de Angelis E, Schlatter P, Brethouwer G, Talamelli A, Casciola CM (2020)
Publication Type: Conference contribution
Publication year: 2020
Publisher: Zakon Group LLC
Conference Proceedings Title: ETC 2013 - 14th European Turbulence Conference
Event location: Lyon, FRA
Abstract
By means of the multidimensional description given by the Kolmogorov equation we study the energy transfer physics and the production mechanisms of wall-turbulent flows at moderately high Reynolds numbers. Two driving mechanisms are identified for the energy fluxes. The first stronger one, here called driving scale-range (DSR), belongs to the near-wall cycle. As expected, its topology remains unaltered with Reynolds number while its intensity is found to slightly increase with Re. The second mechanism, here called outer scale-range (OSR), takes place in the overlap layer and highlights different features in agreement with the attached eddies hypothesis usually considered to describe the overlap dynamics.
Authors with CRIS profile
Involved external institutions
University of Bologna / Università di Bologna
Italy (IT)
Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)
Sweden (SE)
Università degli studi "La Sapienza"
Italy (IT)
Italy (IT)
Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)
Sweden (SE)
Università degli studi "La Sapienza"
Italy (IT)
How to cite
APA:
Cimarelli, A., de Angelis, E., Schlatter, P., Brethouwer, G., Talamelli, A., & Casciola, C.M. (2020). Scalings of the outer energy source of wall-turbulence. In ETC 2013 - 14th European Turbulence Conference. Lyon, FRA: Zakon Group LLC.
MLA:
Cimarelli, A., et al. "Scalings of the outer energy source of wall-turbulence." Proceedings of the 14th European Turbulence Conference, ETC 2013, Lyon, FRA Zakon Group LLC, 2020.
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