2020
DOI: 10.1017/jfm.2019.1014
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Effects of heterogeneous surface geometry on secondary flows in turbulent boundary layers

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Cited by 48 publications
(124 citation statements)
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References 65 publications
(186 reference statements)
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“…Recent studies showed that the size, spanwise location and direction of the secondary flows may be affected by the specific configuration of spanwise heterogeneity (Goldstein & Tuan 1998;Wang & Cheng 2006;Türk et al 2014;Vanderwel & Ganapathisubramani 2015;Stroh et al 2016;Awasthi & Anderson 2018;Chung et al 2018;Hwang & Lee 2018;Medjnoun et al 2018;Yang & Anderson 2018;Medjnoun et al 2020;Zampiron et al 2020). For strip-type roughness, the spanwise roughness wavelength Λ = 2S (figure 1a) seems to determine the behaviour of the secondary flows.…”
Section: The Effect Of Spanwise Heterogeneity On Turbulent Boundary Lmentioning
confidence: 99%
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“…Recent studies showed that the size, spanwise location and direction of the secondary flows may be affected by the specific configuration of spanwise heterogeneity (Goldstein & Tuan 1998;Wang & Cheng 2006;Türk et al 2014;Vanderwel & Ganapathisubramani 2015;Stroh et al 2016;Awasthi & Anderson 2018;Chung et al 2018;Hwang & Lee 2018;Medjnoun et al 2018;Yang & Anderson 2018;Medjnoun et al 2020;Zampiron et al 2020). For strip-type roughness, the spanwise roughness wavelength Λ = 2S (figure 1a) seems to determine the behaviour of the secondary flows.…”
Section: The Effect Of Spanwise Heterogeneity On Turbulent Boundary Lmentioning
confidence: 99%
“…The recessed part of previously investigated ridge-type roughness is typically a flat surface, while the elevated part has many possible cross-sectional shapes: rectangular (Wang & Cheng 2006;Hwang & Lee 2018;Medjnoun, Vanderwel & Ganapathisubramani 2018, trapezoidal (Nezu & Nakagawa 1984), triangular (Goldstein & Tuan 1998;Medjnoun et al 2020;Zampiron, Cameron & Nikora 2020), semicircle (Medjnoun et al 2020), streamwise-aligned pyramids (Yang & Anderson 2018) and smoother, sinusoidal-like spanwise elevation variations (Colombini 1993;Wang & Cheng 2006;Awasthi & Anderson 2018). Studied surfaces often involve a combination of both ridge-type and strip-type roughnesses (Vanderwel & Ganapathisubramani 2015;Vanderwel et al 2019;Stroh et al 2020).…”
Section: Classification Of Spanwise Heterogeneous Roughnessmentioning
confidence: 99%
“…at z = h). This will also be explored here, but it is worth noting immediately that the profiles obtained at specific spanwise locations in laboratory experiments also lie below the regular log-law, as shown by Medjnoun et al (2020) and Zampiron et al (2020). It is much more difficult to obtain spanwise-averaged profiles below z = h in such experiments and that was not attempted in these latter works.…”
Section: Introductionmentioning
confidence: 97%
“…Medjnoun, Vanderwel & Ganapathisubramani 2018;Yang & Anderson 2018;Stroh et al 2020). For flows with longitudinal ribs, apart from the boundary layer DNS of Hwang & Lee (2018) and the channel large eddy simulation (LES) of Yang & Anderson (2018), there appears to be only the study containing data from (channel) DNS and a laboratory boundary layer (Vanderwel et al 2019) and, even more recently, wind tunnel boundary layer studies by Medjnoun, Vanderwel & Ganapathisubramani (2020) and a similar set of experiments, but in a water flume, by Zampiron et al (2020).…”
Section: Introductionmentioning
confidence: 99%
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