A description of turbulence intensity profiles for boundary layers with adverse pressure gradient

Drozdz A, Elsner W, Niegodajew P, Vinuesa R, Orlu R, Schlatter P (2020)

Publication Type: Journal article

Publication year: 2020

Journal

European Journal of Mechanics B-Fluids Elsevier

Book Volume: 84

Pages Range: 470-477

DOI: 10.1016/j.euromechflu.2020.07.003

Abstract

The paper presents an extension of the diagnostic-plot scaling (Alfredsson et al., 2012) of the turbulence-intensity profiles for the outer region of adverse-pressure-gradient (APG) turbulent boundary layers (TBLs). An extended formula including the shape factor is proposed, which allows the diagnostic-plot scaling to be used in strong APGs at high Reynolds numbers. The validity of the new formulation is verified using several available databases. We demonstrate that the new formula allows to scale profiles in cases where the Clauser–Rotta pressure-gradient parameter β is below 14 even in presence of very strong flow-history effects. In order to extend the scaling to the near-wall region of TBLs the adapted complete difference function is proposed. The proposed scaling yields a unified description of the turbulence-intensity profiles regardless of their flow history (as opposed to other previously proposed scalings), and is valid for a wider range of cases not only for the outer but also for the inner region.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Częstochowa University of Technology (CUT) / Politechnika Częstochowska PL Poland (PL) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE)

How to cite

APA:

Drozdz, A., Elsner, W., Niegodajew, P., Vinuesa, R., Orlu, R., & Schlatter, P. (2020). A description of turbulence intensity profiles for boundary layers with adverse pressure gradient. European Journal of Mechanics B-Fluids, 84, 470-477. https://doi.org/10.1016/j.euromechflu.2020.07.003

MLA:

Drozdz, Artur, et al. "A description of turbulence intensity profiles for boundary layers with adverse pressure gradient." European Journal of Mechanics B-Fluids 84 (2020): 470-477.

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