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Quasilaminar regime in the linear response of a turbulent flow to wall waviness

Luchini, Paolo and Charru, François Quasilaminar regime in the linear response of a turbulent flow to wall waviness. (2017) Physical Review Fluids, 2 (1). 012601. ISSN 2469-990X

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Official URL: https://doi.org/10.1103/PhysRevFluids.2.012601

Abstract

The linear response of the wall-shear stress of a turbulent flow to wall waviness is analyzed in the context of a comparison between existing experiments, direct numerical simulations, and analytical approximations. The spectral region where the response is largest is found to be amenable to a simplified quasilaminar analysis. The end result is a parameterless description of this phenomenon that completely captures its physics in a single analytical formula, a Padé approximation of the response function.

Item Type:Article
HAL Id:hal-02077327
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Università degli Studi di Salerno - UniSa (ITALY)
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Deposited On:22 Mar 2019 15:51

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