Results 51 to 60 of about 1,669 (212)

Wall pressure signatures of turbulent flow over longitudinal

open access: yesMATEC Web of Conferences, 2016
Five triangular riblets longitudinal in the streamwise direction have been studied experimentally. The riblets have pick to pick spaced (s) equal to 1000 μm and with groove height to space ratio (h/s) 0.4, 0.6, 0.8 and 1.
Abdulbari Hayder A.   +3 more
doaj   +1 more source

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

open access: yesWind 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   +2 more
doaj   +1 more source

Biomimetics in Helmet Design: A Review of Aerodynamic Perspectives

open access: yesJournal of Engineering, Volume 2026, Issue 1, 2026.
Recent advancements in helmet design demonstrate that mimicking natural models can enhance both aerodynamics and safety protection. Thus, this paper comprehensively reviews the bio‐inspired helmet designs reported in the latest computational and experimental studies, in addition to discussing the biomimetic approaches that integrate aerodynamic ...
Mahadi Hasan Masud   +8 more
wiley   +1 more source

Surface drag reduction and flow separation control in pelagic vertebrates, with implications for interpreting scale morphologies in fossil taxa [PDF]

open access: yesRoyal Society Open Science, 2015
Living in water imposes severe constraints on the evolution of the vertebrate body. As a result of these constraints, numerous extant and extinct aquatic vertebrate groups evolved convergent osteological and soft-tissue adaptations.
Colin Palmer, Mark T. Young
doaj   +1 more source

Multifunctional Micro/Nanostructured Interfaces, Fabrication Technologies, Wetting Control, and Future Prospects

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 22, November 22, 2025.
This review explores recent developments in micro/nanostructured surfaces, with a focus on cavity‐based and reentrant geometries for enhanced liquid repellency and interfacial control. The review discusses fabrication strategies, structural design principles, and application trends, providing a balanced perspective on opportunities and ongoing ...
Seo Rim Park   +11 more
wiley   +1 more source

Adult Suicidality and Therapeutic Engagement: A Systematic Review

open access: yesClinical Psychology &Psychotherapy, Volume 32, Issue 6, November/December 2025.
ABSTRACT Background Engagement in mental health care among adults with suicidality remains significantly low, with limited understanding of the factors influencing treatment retention and dropout. Aims Exploring the factors influencing therapeutic engagement, such as attendance, active participation and completion of therapeutic tasks among adults with
Chloé Muscat   +2 more
wiley   +1 more source

Aircraft viscous drag reduction using riblets [PDF]

open access: yes, 2002
The last two decades have seen considerable research activity on the use of riblets for viscous drag reduction. Experimental results concerning the performance of 3M riblets on airfoils, wings and wing-body or aircraft congurations at different speed ...
Viswanath, PR
core  

Aerodynamic enhancement of wind turbine blades through Peregrine falcon‐inspired surface designs

open access: yesEnvironmental Progress &Sustainable Energy, Volume 44, Issue 6, November/December 2025.
Abstract As global energy demands increase, enhancing renewable energy technologies, particularly wind turbines, is essential to meet sustainability goals. However, achieving higher efficiency remains challenging due to limitations in traditional blade designs. This study explores an innovative solution by applying biomimetic principles inspired by the
Yasin Furkan Gorgulu, Mustafa Arif Ozgur
wiley   +1 more source

Effect of Riblets Geometry on Drag Reduction [PDF]

open access: yesEngineering and Technology Journal, 2010
The effect of longitudinal riblet surface models (U, V and semi-Circular and U with fillet corner riblets) on the performance of unsymmetrical airfoil (NACA23015) which has been investigated numerically and experimentally. Numerical investigation involve
Nibras M. Mahdi, Ikhlase M. Fayed
doaj   +1 more source

Light‐Fueled In‐Operando Shape Reconfiguration, Fixation, and Recovery of Magnetically Actuated Microtextured Covalent Adaptable Networks

open access: yesAdvanced Materials, Volume 37, Issue 39, October 2, 2025.
A covalent adaptable network with dynamic disulfide bonds (DS‐CAN) can rearrange its molecular topology through heating or UV irradiation. When combined with ferromagnetic particles, its photoresponsiveness at room temperature enables contactless, spatiotemporal regulation of dynamic bond exchanges during magnetomechanical actuation.
Yeomyung Yoon   +6 more
wiley   +1 more source

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