Results 1 to 10 of about 177 (133)
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
Marine drag reduction of shark skin inspired riblet surfaces
Biosurface and Biotribology, 2017 Shark skin inspired riblet surfaces have been known to have drag reduction effect for the over past 40 years. It first drew the attention from the aircraft industry.
Y.F. Fu, C.Q. Yuan, X.Q. Bai
exaly +3 more sources
Flow structures and wall parameters on rotating riblet disks and their effects on drag reduction
AEJ - Alexandria Engineering Journal, 2022 The demand of energy saving and loss mitigation in modern industry gives rise to drag reduction techniques such as micro groove/riblet ever since the last century.
Guobiao Cai
exaly +3 more sources
Turbulent Boundary Layer Control with Multi-Scale Riblet Design
EnergiesMotivated by the saturation of drag reduction effectiveness at high non-dimensional riblet spacing in turbulent boundary layer flows, this study seeks to investigate the influence of a secondary blade riblet structure on flow statistics and friction drag
Yaqing Jin, Dhanush Bhamitipadi Suresh
exaly +3 more sources
Nanomaterials, 2023 Riblet and superhydrophobic surfaces are two typical passive control technologies used to save energy. In this study, three microstructured samples—a micro-riblet surface (RS), a superhydrophobic surface (SHS), and a novel composite surface of micro ...
Xiaotao Hu, Fulai Liu, Juan Fang
exaly +3 more sources
Results in EngineeringThis paper uses the Large-eddy simulation method to investigate the influence of riblet yaw angle on drag reduction rate with different immersion heights, revealing that the vortex structure is gradually transformed from riblet-tip vortex pairs to ...
Zhiping Li +4 more
exaly +3 more sources
Bio-inspired Surface Texture Fluid Drag Reduction using Large Eddy Simulation [PDF]
Journal of Applied Fluid Mechanics, 2023 Skin friction drag can be reduced through the application of bio-inspired riblet surfaces. Numerical simulations were performed using Large Eddy Simulation (LES) to investigate the effect of using riblets on reducing skin friction drag.
S. Hijazi, E. Tolouei
doaj +1 more source
Journal of Engineering, 2023 The simulation have been made for 3D flow structure and heat transfer with and without longitudinal riblet upstream of leading edge vane endwall junction of first stage nozzle guide vane .The research explores concept of weakening the secondary ...
Najdat Nashat Abdulla +2 more
doaj +1 more source
Numerical simulation of turbulent channel flow with particle-adhered riblet surfaces
Journal of Fluid Science and Technology, 2023 Numerical simulations of particle laden and fully developed turbulent channel flows with rectangular riblet were performed to investigate the influence of particle adhesion on the drag reduction effect.
Chikara SHIMIZU +2 more
doaj +1 more source
Microshape Control, Riblets, and Drag Minimization [PDF]
SIAM Journal on Applied Mathematics, 2013 Relying on the rugosity effect, we analyse the drag minimization problem in relation to the microstructure of the surface of a given obstacle. We construct a mathematical framework for the optimization problem, prove the existence of an optimal solution by $\Gamma$-convergence arguments, and analyze the stability of the drag with respect to the ...
Bucur, Dorin, Bonnivard, Matthieu
openaire +2 more sources