Results 41 to 50 of about 2,389,034 (239)

Some design features of the carousel type wind turbine bidarrieus

Eurasian Physical Technical Journal, 2019
The article presents the results of studies to improve the vertical-axis Darrieus type wind turbine with two coaxially located rotating shafts. Some design features of the symmetrical NACA-0021 airfoil are discussed.
A.K. Yershina, S.E. Sakipova, R.K. Manatbayev   +2 more
doaj   +1 more source

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

Advanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na, Geonyoung Jung, Yoojin Chang, Yun Goo Ro, Cheolhong Park, Jeonghee Yeom, Jinyoung Kim, Jeeyoon Kim, Hyejin Lee, Hyeji Oh, Hyunhyub Ko   +10 more
wiley   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Calculating the aerodynamics of vertical axis wind turbines

Vietnam Journal of Mechanics, 2012
Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible.
Hoang Thi Bich Ngoc
doaj   +1 more source

Broadening Hard‐Magnet Discovery Beyond Symmetry Constraints via Unified Effective Anisotropy

Advanced Science, EarlyView.
A unified effective‐anisotropy descriptor (Keff) extends hard‐magnet screening across all seven crystal systems, beyond the uniaxial restriction of conventional searches. Machine‐learning screening of 9320 known ferromagnets and diffusion‐model generation together yield 38 rare‐earth‐free or ‐lean candidates with DFT‐validated magnetic hardness (κ > 1),
Hojae Kim, Hyeondeok Shin, Kyungju Nam, Seunghyo Noh, Donghwi Kim, Yousung Jung   +5 more
wiley   +1 more source

Advancements in Offshore Vertical Axis Wind Turbines

Energies, 2023
In the past few years, the journal Energies received various original research manuscripts on offshore vertical axis wind turbines (VAWTs) [...]
openaire   +3 more sources

Vertical Axis Wind Turbine as a Miniature Project of Renewable Energy for Indonesia Gold 2045: A Bibliometric and Survey Analysis [PDF]

E3S Web of Conferences
This study aims to describe the trends, contributions, and perspectives of students as opportunities for the application of vertical axis wind turbines. This study uses a mixed method design with an explanatory sequential scheme.
Damarsha A. B., Mubarok H., Nasution N. N. A., Muharam M. M., Widodo B. S., Mulatu K. K.   +5 more
doaj   +1 more source

Bio‐Inspired Gradient Coatings Enhance the Leading Edge Erosion Resistance of Wind Blades

Advanced Science, EarlyView.
Rain‐induced erosion of the wind turbine blade leading edge poses a critical challenge to maintenance and operation. Here, we propose a bio‐inspired approach for erosion protection utilising a platelet‐reinforced polyurethane coating with a graded through‐thickness architecture.
Natalia Sofia Guevara‐Sotelo, Julie Teuwen, Kunal Masania   +2 more
wiley   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

Advanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu, Huaping Zhao, Lizhuang Chen, Weidong Shi, Guosheng Shao, Yong Lei   +5 more
wiley   +1 more source

Vertical-axis wind turbines in oblique flow: sensitivity to rotor geometry [PDF]

, 2011
Increasing interest is being shown worldwide in the application of vertical-axis wind turbines for decentralised electricity generation within cities.
Scheurich, Frank, Brown, Richard
core   +3 more sources