Results 61 to 70 of about 3,774 (202)

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

Performance losses of drag-reducing spanwise forcing at moderate values of the Reynolds number

, 2013
A fundamental problem in the field of turbulent skin-friction drag reduction is to determine the performance of the available control techniques at high values of the Reynolds number $Re$.
Gatti, Davide, Quadrio, Maurizio
core   +1 more source

Hydrodynamics of fossil fishes [PDF]

, 2014
Fromtheir earliest origins, fishes have developed a suite of adaptations for locomotion in water, which determine performance and ultimately fitness. Even without data from behaviour, soft tissue and extant relatives, it is possible to infer a wealth of ...
Alexander RM, Arnold GP, Barbieri L, Batchelor GK, Belles-Isles M, Belles-Isles M, Blake RW, Braun J, Bunker SJ, Burrow C, Ferry LA, Fish FE, Ganguly DN, Harris JE, Helfman GS, Hopson JA, Janvier P, Kardong K, Kermack KA, Kogan I, Lauder GV, Liao JC, Long JA, Long JH, Mark-Kurick E, Motta PJ, Müller UK, Pough FH, Poyato-Ariza FJ, Pradel A, Přikryl T, Reif W-E, Reif W-E, Turner S, Videler JJ, Webb PW, Webb PW, Weihs D, Wilga CAD, Wilga CD, Wishak M   +40 more
core   +2 more sources

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

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

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

Gastropods of the Lower Jurassic Hierlatz Limestone Formation, part 3. New pleurotomarioideans from the fauna of Hierlatz Alpe (Hallstatt, Austria) [PDF]

, 2017
This paper adds sixteen pleurotomarioidean species to the fauna from the type locality area of the Lower Jurassic Hierlatz Limestone Formation (Hallstatt, Austria).
Szabó, János
core   +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

Design Drivers of Energy-Efficient Transport Aircraft [PDF]

, 2011
The fuel energy consumption of subsonic air transportation is examined. The focus is on identification and quantification of fundamental engineering design tradeoffs which drive the design of subsonic tube and wing transport aircraft.
Drela, Mark
core   +1 more source