Results 61 to 70 of about 177 (133)
Nihon Kikai Gakkai ronbunshuExperimental investigations in a wind tunnel facility have been made over riblets and smooth surfaces at moderate Reynolds numbers under zero pressure gradient.
Takuto NONOMIYA +2 more
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FluidsShark skin grooves, known to reduce hydrodynamic drag, have inspired riblet structures for flow control. This study investigates their application to airfoils, where flow separation at high angles of attack (AOA) compromises aerodynamic stability and ...
Xiaopei Yang +3 more
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VISCOUS DRAG REDUCTION ON AXISYMMETRIC BODIES USING HELICAL RIBLETS [PDF]
International Journal of Advanced Design and Manufacturing Technology, 2014 A series of subsonic wind tunnel tests was conducted on an ogive-cylinder-flare configuration at zero angle of attack to study the effects of small helical protuberances on viscous drag reduction behavior.
Ali Davari
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Numerical Simulation of Blade-Shaped Riblets Using LES-Based Methods
Chemical Engineering Transactions, 2023 Passive flow control techniques are widely implemented in many areas of fluid mechanics and aerodynamics, aiming at permanently altering the flow field to suppress undesired phenomena or enhance performance.
Chris Bliamis +3 more
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Investigation on the Mechanism of Drag Modification over Triangular Riblets
Journal of Applied Fluid Mechanics, 2020 This paper presents experimental and numerical investigations on the modification of local spanwise skin-friction over triangular riblets under the total drag reduction condition.
M. M. Zhang, Z. L. Zhang, M. Zhao
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NACA 2412 Drag Reduction Using V-Shaped Riblets
EngThis research focuses on addressing a significant concern in the aviation industry, which is drag. The primary objective of this project is to achieve drag reduction through the implementation of riblets on a wing featuring the NACA 2412 aerofoil ...
Smitha Mol Selvanose +3 more
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BiomimeticsV-shaped riblets are widely studied shark-skin-inspired microstructures, but their continuous high-fidelity replication on soft hyperelastic substrates remains challenging because large substrate deformation complicates complete profile filling.
Jiangpeng Liu +4 more
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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, Rixin Cheng, Yonghong Li
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Drag Reduction Effect of Gradually-Varying Riblet Structures on Conical Rotating Disks
水下无人系统学报Based on the enclosed flow field conditions and optimized dynamic-static clearances, a gradually-varying riblet drag reduction structure was proposed by combining the drag reduction principle of uniform-sized riblets to address the problem of increased ...
Sen WU, Jiaqi ZOU, Yicheng FAN, Dan ZHAO
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