Results 1 to 10 of about 384 (179)
Drag Reduction by Riblets on a Commercial UAV
Applied Sciences (Switzerland), 2022 Riblets are micro-grooves capable of decreasing skin-friction drag, but recent work suggests that additional benefits are possible for other components of aerodynamic drag. The effect of riblets on a fixed-wing, low-speed Unmanned Aerial Vehicle (UAV) on
Benedetto Mele +2 more
exaly +3 more sources
Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2011 The interaction of the overlying turbulent flow with riblets, and its impact on their drag reduction properties are analysed. In the so-called viscous regime of vanishing riblet spacing, the drag reduction is proportional to the riblet size, but for larger riblets the proportionality breaks down, and the drag reduction eventually ...
Ricardo García-Mayoral +1 more
exaly +4 more sources
Applied Sciences, 2023 Continuous evolution in nature has created optimum solutions for creature survival that have inspired many innovative engineering designs. Riblet geometries, passive flow control devices, have been studied, which were inspired by the skin of fast ...
Mohammad Reza Pakatchian +2 more
doaj +3 more sources
The Influence of Boundary Layer Caused by Riblets on the Aircraft Surface
Applied Sciences (Switzerland), 2020 Drag reduction of riblets is one of the most important problems in drag reduction of non-smooth surfaces. In the past two decades, the use of riblets arranged along the flow direction to reduce frictional resistance has received considerable attention ...
Zhenqing Wang, Lei Xu, Hongqing Lv
exaly +3 more sources
Mitigation of turbulent noise sources by riblets
Journal of Sound and Vibration, 2022 Copyright © 2022 The Authors. A feasibility study is presented on the application of riblets to suppress turbulent pressure sources leading to a reduction in the generation of aerofoil self-noise. It is shown that riblets can reduce skin friction as well as the turbulence intensity inside the boundary layer. In addition, near-wall turbulence structures
Tze Pei Chong
exaly +3 more sources
Experiments on Cavitation Control around a Cylinder Using Biomimetic Riblets
Journal of Marine Science and EngineeringExperimental investigations were conducted to uncover the impact of cavitation control—through the use of biomimetic riblets on cavitating flows around a circular cylinder.
Mazyar Dawoodian +2 more
exaly +3 more sources
AerospaceBionic herringbone riblets are applied to relieve the flow near the blade endwall in a linear compressor cascade under the incidence angle of −4° to 6° at a Reynolds number of 382,000.
Peng Zhang
exaly +3 more sources
Xibei Gongye Daxue Xuebao, 2022 Turbulent drag reduction has always been a hot issue in fluid mechanics. Among various turbulent drag reduction methods, riblets has attracted wide attention due to its simple structure and convenient application.
DU Shuya, SANG Weimin, PANG Run
doaj +1 more source
Numerical analysis of turbulence characteristics in a flat-plate flow with riblets control
Advances in Aerodynamics, 2022 A comparative study about riblets-controlled turbulent boundary layers has been performed to investigate the turbulence characteristics associated with drag reduction in a compressive flat-plate flow (where the free-stream Mach number is 0.7) by means of
Yang Zhang +5 more
doaj +1 more source
Analysis of the influence of grooves in the diffuser on total pressure losses
Авіаційно-космічна техніка та технологія, 2023 The subject of the study is the total pressure in the diffuser channel with passive control of the boundary layer. The object of this research is a diffuser channel with riblets.
Illia Yudin
doaj +1 more source