Results 51 to 60 of about 384 (179)

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

Environmental 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

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

Advanced 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, Hojun Moon, Woongbi Cho, Dongwook Lee, Sohdam Jeong, Jeong Jae Wie, Chae Bin Kim   +6 more
wiley   +1 more source

Effect of Riblets Geometry on Drag Reduction [PDF]

Engineering 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

Role of the Setae in an Ectoparasitic Seal Louse in Reducing Surface Drag: Numerical Modeling Approach

Advanced Theory and Simulations, Volume 8, Issue 10, October 2025.
The seal louse Echinophthirius horridus has uniquely shaped setae that may reduce drag during its host's dives. Using numerical simulations, this study demonstrates that their natural inclination promotes vortex formation, minimizing friction and energy loss. These findings provide insights into biological surface adaptations and may inspire the design
Anika Preuss, Stanislav N. Gorb, Alexander Kovalev, Alexander E. Filippov   +3 more
wiley   +1 more source

Multiwavelength Observations of Substructures in Solar Flare Ribbons

The Astrophysical Journal
Solar flare ribbons are extensive brightenings in the chromosphere during flares, often showing fine-scale structuring that reflects the underlying energy release. Using high-cadence imaging from the Swedish 1 m Solar Telescope/CRISP during an X1.5-class
Vishal Singh, Eamon Scullion, Gert J. J. Botha, Natasha L. S. Jeffrey, Malcolm Druett, Alexander G. M. Pietrow, Aidan O’Flannagain, Chris J. Nelson, Gerry Doyle   +8 more
doaj   +1 more source

Taxonomic Revision of Jingle Shells: Resurrecting and Reclassifying Species of Anomiidae (Bivalvia: Pectinida)

Ecology and Evolution, Volume 15, Issue 10, October 2025.
The family Anomiidae displays taxonomic ambiguity due to morphological plasticity. We resurrect Heteranomia aculeata and Pododesmus glaucus, while reclassifying Isonomia umbonata as Pododesmus umbonatus. Phylogenetic analyses confirm these revisions and the monophyly of all genera within Anomiidae, with Pododesmus as the earliest‐diverging lineage ...
Yi‐Tao Lin, Jian‐Wen Qiu
wiley   +1 more source

Scalable Fabrication of Height‐Variable Microstructures with a Revised Wetting Model

Advanced Engineering Materials, Volume 27, Issue 13, July 2025.
Height‐variable microstructures are fabricated using a scalable CO2 laser machining approach, enabling precise control of wettability through structural gradients. Classical wetting models fail to capture height‐induced effects, necessitating a revised theoretical framework.
Prabuddha De Saram, Nam‐Trung Nguyen, Navid Kashaninejad   +2 more
wiley   +1 more source

Examination of the wall law based on determining virtual origins over riblets in a turbulent boundary layer

Nihon Kikai Gakkai ronbunshu
Experimental investigations in a wind tunnel facility have been made over riblets and smooth surfaces at moderate Reynolds numbers under zero pressure gradient.
Takuto NONOMIYA, Monami SASAMORI, Shinsuke MOCHIZUKI   +2 more
doaj   +1 more source

Microcylinder and Slot Combination for Flow Separation Control Over a Wind Turbine Airfoil

Wind Energy, Volume 28, Issue 7, July 2025.
ABSTRACT This study explores a novel passive flow control strategy combining a microcylinder and slot configuration to mitigate flow separation over an S809 wind turbine airfoil under stall conditions at a Reynolds number of 106. Numerical simulations are conducted using the Reynolds‐averaged Navier–Stokes (RANS) approach. The primary objectives are to
Sami Bouterra, Riyadh Belamadi, Abdelouaheb Djemili, Adrian Ilinca   +3 more
wiley   +1 more source

Emerging Trends in Bioinspired Superhydrophobic and Superoleophobic Sustainable Surfaces

Advanced Materials, Volume 37, Issue 12, March 26, 2025.
Biomimicry offers an exceptional opportunity to design materials with advanced properties. This review summarizes the latest findings for developing sustainable superhydrophobic–superoleophobic materials using biomimicry, their challenges, and future directions.
Cerys M. Cormican, Sinem Bektaş, Francisco J. Martin‐Martinez, Shirin Alexander   +3 more
wiley   +1 more source