Results 51 to 60 of about 11,119 (215)

Numerical method for an assessment of steady and motion-excited flowfields in a transonic cascade wind tunnel

open access: yesJournal of the Global Power and Propulsion Society, 2017
This article presents a numerical method and its application for an assessment of the flow field inside a wind tunnel. A structured computational fluid dynamics (CFDs) solver with overset mesh technique is developed in order to simulate geometrically ...
Atsushi Tateishi   +3 more
doaj   +1 more source

Joint Actuator and Sensor Fault Diagnosis in Wind Turbine Systems

open access: yesWind Energy, Volume 28, Issue 12, December 2025.
ABSTRACT This paper presents a fault diagnosis method for wind turbine systems that can simultaneously detect and estimate both actuator and sensor faults. Unlike previous studies that treat these faults separatelyand focus mainly on pitch angle‐related variables, our study recognizes the interdependence between actuator and sensor faults and expands ...
Evi Elisa Ambarita   +2 more
wiley   +1 more source

Dynamic Performance of Advanced Composite Towers in Offshore Wind Farms: Experimental and Numerical Investigation

open access: yesWind Energy, Volume 28, Issue 12, December 2025.
ABSTRACT Conventional steel towers face challenges such as insufficient stiffness and structural instability, making them increasingly unsuitable for supporting large multi‐megawatt wind turbines. This study investigates the dynamic performance of concrete‐filled double‐skin steel tubular (CFDST) wind turbine towers as a novel structural member ...
Xiaogang Jia   +3 more
wiley   +1 more source

Virtual Sensing of Wind Turbine Loads With Multi‐Hidden Markov Models for Above‐Rated Wind Speeds

open access: yesWind Energy, Volume 28, Issue 12, December 2025.
ABSTRACT The growing demand for wind energy necessitates efficient health monitoring strategies to ensure the long‐term reliability of wind turbines. Monitoring critical loads, such as flapwise blade root moments and tower base fore‐aft moments, is crucial for preventing turbine fatigue and failure. However, direct measurements through physical sensors
A. Hassan   +5 more
wiley   +1 more source

On the Determination of the Aerodynamic Damping of Wind Turbines Using the Forced Oscillations Method in Wind Tunnel Experiments

open access: yesEnergies, 2019
The development of wind turbine technology has led to higher and larger wind turbines with a higher sensitivity to dynamic effects. One of these effects is the aerodynamic damping, which introduces favorable damping forces in oscillating wind turbines ...
Robert Fontecha   +2 more
doaj   +1 more source

Accelerating Vortex Particle Methods by Downsampling the Vorticity Field Representation

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 97, Issue 11, Page 1410-1425, November 2025.
This paper presents two downsampling algorithms for vortex particle methods (VPMs) that reduce the number of computational elements representing the vorticity field. The two methods demonstrate significant reductions in particle count and computation time in benchmark cases at a cost of diffusive errors.
Jakub Siemaszko   +2 more
wiley   +1 more source

Shape Reconstruction and Tip Force Estimation in Tendon-Driven Soft Robots Using Physics-Informed Neural Networks

open access: yesIEEE Access
This paper presents a theoretical model for the shape reconstruction of soft robots under a tip force, a tip moment, and a distributed load along the body, akin to blood flow forces acting on ablation catheters in the left atrium.
Reza Khoshbakht   +3 more
doaj   +1 more source

Optimized Design and Test of Geometrically Nonlinear Static Aeroelasticity Model for High-Speed High-Aspect-Ratio Wing

open access: yesAerospace
Large transport aircraft tend to adopt a wing layout with a high aspect ratio and swept-back angle due to the requirement of a high lift-to-drag ratio. Composite material is typically employed to ensure the light weight of the structure, causing serious ...
Xing Li   +4 more
doaj   +1 more source

Analysis of aerodynamic characteristics of hypersonic folding-wing aircraft

open access: yesHangkong gongcheng jinzhan
Hypersonic aircraft encounter challenges in adapting to complex external environments during missions. Conventional fixed-wing aircraft have limited optimal aerodynamic performance under specific conditions.
WU Zaoping, QIN Jian, WU Jie
doaj   +1 more source

Home - About - Disclaimer - Privacy