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Uniform blowing and suction applied to nonuniform adverse-pressure-gradient wing boundary layers

Atzori, Marco; Vinuesa, Ricardo; Stroh, Alexander; Gatti, Davide; Frohnapfel, Bettina ORCID iD icon; Schlatter, Philipp

Abstract:

A detailed analysis of the effects of uniform blowing, uniform suction, and body-force damping on the turbulent boundary layer developing around a NACA4412 airfoil at moderate Reynolds number is presented. The flow over the suction and the pressure sides of the airfoil is subjected to a nonuniform adverse pressure gradient and a moderate favorable pressure gradient, respectively. We find that the changes in total skin friction due to blowing and suction are not very sensitive to different pressure-gradient conditions or the Reynolds number. However, when blowing and suction are applied to an adverse-pressure-gradient (APG) boundary layer, their impact on properties such as the boundary-layer thickness, the intensity of the wall-normal convection, and turbulent fluctuations are more pronounced. We employ the Fukagata-Iwamoto-Kasagi decomposition [K. Fukagata et al., Phys. Fluids 14, 73 (2002)] and spectral analysis to study the interaction between intense adverse pressure gradient and these control strategies. We find that the control modifies skin-friction contributions differently in adverse-pressure-gradient and zero-pressure-gradient boundary layers. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000142545
Veröffentlicht am 28.01.2022
Originalveröffentlichung
DOI: 10.1103/PhysRevFluids.6.113904
Scopus
Zitationen: 13
Web of Science
Zitationen: 13
Dimensions
Zitationen: 14
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Strömungsmechanik (ISTM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 2469-990X
KITopen-ID: 1000142545
Erschienen in Physical review fluids
Verlag American Physical Society (APS)
Band 6
Heft 11
Seiten Art.-Nr. 113904
Vorab online veröffentlicht am 29.11.2021
Nachgewiesen in Web of Science
Dimensions
Scopus
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