Revisiting History Effects in Adverse-Pressure-Gradient Turbulent Boundary Layers

Vinuesa R, Orlu R, Sanmiguel Vila C, Ianiro A, Discetti S, Schlatter P (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Flow Turbulence and Combustion Springer Verlag (Germany)

Book Volume: 99

Pages Range: 565-587

Journal Issue: 3-4

DOI: 10.1007/s10494-017-9845-7

Abstract

The goal of this study is to present a first step towards establishing criteria aimed at assessing whether a particular adverse-pressure-gradient (APG) turbulent boundary layer (TBL) can be considered well-behaved, i.e., whether it is independent of the inflow conditions and is exempt of numerical or experimental artifacts. To this end, we analyzed several high-quality datasets, including in-house numerical databases of APG TBLs developing over flat-plates and the suction side of a wing section, and five studies available in the literature. Due to the impact of the flow history on the particular state of the boundary layer, we developed three criteria of convergence to well-behaved conditions, to be used depending on the particular case under study. (i) In the first criterion, we develop empirical correlations defining the Reθ-evolution of the skin-friction coefficient and the shape factor in APG TBLs with constant values of the Clauser pressure-gradient parameter β = 1 and 2 (note that β = δ∗/τwdPe/dx, where δ∗ is the displacement thickness, τw the wall-shear stress and dPe/dx the streamwise pressure gradient). (ii) In the second one, we propose a predictive method to obtain the skin-friction curve corresponding to an APG TBL subjected to any streamwise evolution of β, based only on data from zero-pressure-gradient TBLs. (iii) The third method relies on the diagnostic-plot concept modified with the shape factor, which scales APG TBLs subjected to a wide range of pressure-gradient conditions. These three criteria allow to ensure the correct flow development of a particular TBL, and thus to separate history and pressure-gradient effects in the analysis.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE) Universidad Carlos III de Madrid (UC3M) ES Spain (ES)

How to cite

APA:

Vinuesa, R., Orlu, R., Sanmiguel Vila, C., Ianiro, A., Discetti, S., & Schlatter, P. (2017). Revisiting History Effects in Adverse-Pressure-Gradient Turbulent Boundary Layers. Flow Turbulence and Combustion, 99(3-4), 565-587. https://doi.org/10.1007/s10494-017-9845-7

MLA:

Vinuesa, Ricardo, et al. "Revisiting History Effects in Adverse-Pressure-Gradient Turbulent Boundary Layers." Flow Turbulence and Combustion 99.3-4 (2017): 565-587.

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