Results 241 to 250 of about 3,247,968 (335)

Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study

open access: yesWind Energy, Volume 28, Issue 8, August 2025.
ABSTRACT The conventional Savonius wind turbine's power coefficient is comparatively low, which limits its efficiency. Because the power coefficient depends significantly on the blade design, this study investigates the potential of improving the turbine performance by modifying the rotor blade designs.
Shihab Shahriare   +2 more
wiley   +1 more source

Meteorological Assessment of Vertical Axis Wind Turbine Energy Microgeneration Potentials Across Two Swiss Cities Located in Complex Terrain

open access: yesWind Energy, Volume 28, Issue 8, August 2025.
ABSTRACT Wind energy is the most mature renewable energy technology; however, its exploitation in cities is often met with skepticism. Thanks to their ability to operate at low wind speed regardless of direction, vertical axis wind turbines (VAWTs) offer an attractive opportunity for wind energy harvesting in cities. However, limited evidence exists on
Aldo Brandi, Gabriele Manoli
wiley   +1 more source

Spline‐Based Framework for Microscopic Contact Zone Modeling in Lubricated Orthogonal Cutting

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 14, 30 July 2025.
ABSTRACT Accurately predicting the coefficient of friction between tool, chip, and workpiece during machining is essential for a reliable and cost‐effective process. In this context, current numerical methods are often based on homogenized approaches with friction models that use constant friction coefficients; thus, failing to capture local effects ...
Jaewook Lee   +9 more
wiley   +1 more source

Turbulence of Tropical Cyclones: From Peristrophic to Zonostrophic

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 14, 28 July 2025.
Abstract Cyclostrophic rotation in the core region of tropical cyclones (TCs) imprints a distinct signature upon their turbulence structure. Its intensity is characterized by the radius of maximum wind, Rmw ${R}_{mw}$, and the azimuthal wind velocity at that radius, Umax ${U}_{max}$.
Boris Galperin   +3 more
wiley   +1 more source

Climate‐Driven Stratification Intensifies Internal Wave Cooling on a Shallow Island Reef

open access: yesGeophysical Research Letters, Volume 52, Issue 14, 28 July 2025.
Abstract As ocean temperatures rise, understanding the cooling role of internal waves is crucial for reef preservation. Climate‐induced surface warming increases stratification, altering internal wave propagation. We use high‐resolution, nonhydrostatic simulations at Dongsha Atoll in the South China Sea to explore seasonal bottom temperature changes ...
Justin S. Rogers   +4 more
wiley   +1 more source

Impact of Wind‐Wave Coupling on Turbulence and Air‐Sea Fluxes: Insights From Direct Numerical Simulations

open access: yesGeophysical Research Letters, Volume 52, Issue 14, 28 July 2025.
Abstract Accurate prediction of air‐sea fluxes hinges on a deep understanding of wind‐wave interactions, yet feedback mechanisms involving surface waves and wind are not fully understood. This paper investigates the effect of two‐way coupling between wind and waves on wind turbulence through direct numerical simulation of air‐water two‐phase flows ...
Jinlong Zhang, Weijian Liu, Yuhong Dong
wiley   +1 more source

Optical neural engine for solving scientific partial differential equations. [PDF]

open access: yesNat Commun
Tang Y   +7 more
europepmc   +1 more source

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