Results 41 to 50 of about 3,774 (202)

Experimental investigations on the drag reduction over riblets in a turbulent boundary layer under adverse pressure gradients

Nihon Kikai Gakkai ronbunshu
Experimental investigations on the drag reduction phenomenon over riblets have been made in turbulent boundary layer under adverse pressure gradients.
Takuto NONOMIYA, Monami SASAMORI, Shinsuke MOCHIZUKI   +2 more
doaj   +1 more source

Direct numerical simulation for investigation on yaw angle effects on riblets

Journal of Fluid Science and Technology, 2017
The yaw angle (φ) effect on riblets are investigated by parametrically conducted direct numerical simulation (DNS). Three configurations are adopted: standard straight riblet, sinusoidal riblet, and modified sinusoidal riblet. The height of the side wall
Kie OKABAYASHI
doaj   +1 more source

Optimal Microstructures Drag Reducing Mechanism of Riblets [PDF]

Journal of Mathematical Fluid Mechanics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Friedmann, Elfriede, Richter, Thomas
openaire   +1 more source

Acute‐Phase Interventions After Self‐Harm for Preventing Suicide and Recurrence: A Systematic Review and Meta‐Analysis

Acta Psychiatrica Scandinavica, EarlyView.
ABSTRACT Introduction Suicide risk is markedly elevated following presentation after self‐harm, yet the evidence base for interventions initiated in the immediate post‐presentation period has not been synthesized with specific attention to this high‐risk window. Clarifying which early interventions may reduce adverse outcomes is essential for informing
Guilherme Pimenta Roncete, Luis C. Farhat, Loren Beiram, Bianca Besteti Fernandes Damiano, Craig J. Bryan, Karina L. Ramirez, Euripedes Constantino Miguel, Rodolfo Furlan Damiano   +7 more
wiley   +1 more source

Micropatterned Surfaces with Unidirectional Wetting Properties for Liquid Transport

Small Structures, Volume 7, Issue 2, February 2026.
Micropatterned surfaces that guide droplets in a single direction are gaining attention for their role in liquid transport. This review explores how surface designs enable such behavior, from gravity‐driven flow to stimulus‐responsive movement. It also discusses fabrication techniques, design challenges, and emerging strategies to advance directional ...
Elham Lori Zoudani, Prabuddha De Saram, Stefanie Feih, Hoang Huy Vu, Nam‐Trung Nguyen, Navid Kashaninejad   +5 more
wiley   +1 more source

Numerical Study on the Corner Separation Control for a Compressor Cascade via Bionic Herringbone Riblets

Aerospace
Bionic 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
doaj   +1 more source

Wind tunnel investigations of DU97‐W‐300‐mod equipped with riblets

Wind Energy, 2021
A well‐known 30% thick wind turbine aerofoil was partially equipped with riblets, and lift and drag data were measured in a large acoustic wind tunnel. Drag was reduced up to 10%, and lift‐to‐drag ratio increased by up to 30%.
Alois Peter Schaffarczyk, Andreas Momber, Volkmar Stenzel   +2 more
doaj   +1 more source

Mitigation of turbulent noise sources by riblets

Journal of Sound and Vibration, 2022
Data availability: Data will be made available on request. 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.
Chioma Muhammad, Tze Pei Chong
openaire   +3 more sources

Strategies for achieving real‐world robustness in topologically engineered surfaces with special wettability

Droplet, Volume 5, Issue 1, January 2026.
Engineered topologies surfaces with special wettability are promising for their ability to precisely customize wetting behaviors and incorporate versatile functionalities, setting them apart from randomly structured surfaces. However, robustness and durability have been hurdles to their broad application.
Sin‐Yung Siu, Yeonhui Choo, Chiu‐Wing Chan, Xiaonan Liu, Chuanbo Hu, Zuankai Wang, Kangning Ren   +6 more
wiley   +1 more source

Experimental Investigation on Drag Reduction Characteristics of Riblets Considering the Flow Environment of Fuselage

Aerospace
The riblets surface is a passive turbulence drag reduction technology that holds promising application prospects in drag reduction for large aircraft. Currently, most research on the drag reduction characteristics of riblets is limited to medium and low ...
Qiyue Ma, Peiqing Liu, Hao Guo, Fei Cui, Yankun Su, Chunpeng Li, Tiejun Zhang   +6 more
doaj   +1 more source