Results 11 to 20 of about 1,669 (212)
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.
Ebrahim Kadivar +3 more
doaj +2 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
Energy amplification in channel flow over riblets
2011 IEEE International Symposium on Computer-Aided Control System Design (CACSD), 2011 A number of methods of reducing the drag over airfoils have been investigated. This paper considers the use of riblets, which are structures that run parallel to one another that are positioned longitudinally to the flow. It has been shown experimentally that when the shape, spacing and height of the riblets are optimized, the drag coefficient can be ...
Stephen Duncan +1 more
openaire +3 more sources
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
Drag reduction within radial turbine rotor passages using riblets [PDF]
, 2022 In this paper, reducing the friction losses in a radial inflow turbine rotor surface by adding engineered features (riblets) is explored. Initially, computational fluid dynamics analysis was used to study the operating mechanism of riblets and to test ...
Khader, M. A., Sayma, A. I.
core +1 more source
Drag Reduction Performance of Triangular (V-groove) Riblets with Different Adjacent Height Ratios [PDF]
Journal of Applied Fluid Mechanics, 2023 Surface structure is used to interfere with the turbulent boundary layer in the groove drag reduction, which is important to the endurance and stability of high-speed and ultrahigh-speed aircraft.
Z. M. Liu +7 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
Climate Impact Mitigation Potential of Novel Aircraft Features
Aerospace, 2022 This work presents a transpacific airliner designed for minimal climate impact, incorporating several novel design features. These include open rotor engines, sustainable aviation fuels, natural laminar flow airfoils, and riblets.
Nils M. Barner +4 more
doaj +1 more source
Numerical Evaluation of Riblet Drag Reduction on a MALE UAV
Aerospace, 2022 Flow control methods for aerodynamic drag reduction have been a field of interest to aircraft designers, who seek to minimize fuel consumption and increase the aircraft’s aerodynamic performance.
Chris Bliamis +3 more
doaj +1 more source