Results 51 to 60 of about 372,323 (311)
Wind Tunnel Test of the Icing Characteristics of Airfoil Rotating around a Vertical Axis
International Journal of Rotating Machinery, 2020 To determine the process of icing on the rotating machinery, an icing experiment on a rotating airfoil blade was carried out in this paper. First, an icing wind tunnel was fabricated, and its conditional parameters were calibrated.
Yan Li +4 more
doaj +1 more source
Modelling the Wind Turbine by Using the Tip-Speed Ratio for Estimation and Control
Energies, 2022 The development of dynamic models for control purposes is characterised by the challenge of finding a compromise between the minimum necessary information about the system dynamics contained in the model and a model with a low level of complexity such ...
Adrian Gambier, Yul Yunazwin Nazaruddin
doaj +1 more source
Advanced Engineering Materials, EarlyView.In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart +3 more
wiley +1 more source
EnergiesThe aim of this research work was to explore how modifying the design of small-scale HAWT rotor blades through the backward-facing step technique affects their efficiency under varying wind speeds.
Riad Morina, Yahya Erkan Akansu
doaj +1 more source
Dynamic Stall of a Vertical-Axis Wind Turbine and Its Control Using Plasma Actuation
Energies, 2019 In this paper, a dynamic stall control scheme for vertical-axis wind turbine (VAWT) based on pulsed dielectric-barrier-discharge (DBD) plasma actuation is proposed using computational fluid dynamics (CFD).
Lu Ma +3 more
doaj +1 more source
Aerodynamic Optimization Design of a Supersonic Compressor Rotor with High Pressure Ratio
International Journal of Aerospace Engineering, 2021 Supersonic compressors have a high wheel speed and operational capability, which facilitate a high stage pressure ratio. However, the strong shock waves in the passage of a supersonic rotor and the interference between shock waves and boundary layers can
Cui Cui, Zhenggui Zhou, Endor Liu
doaj +1 more source
Wake control through tip-speed ratio adaptation
Abstract. Offshore wind farms can generate wake losses between 10 and 20 % even after layout optimization. By altering the turbine operational parameters, it is possible to reduce internal wake effects. A wake-control approach by modifying the operational tip-speed ratio is presented here using LES high-fidelity modelling with DTU 10 MW reference wind ...
Knauer, Andreas +3 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Research on Aerodynamic Performance of Asynchronous-Hybrid Dual-Rotor Vertical-Axis Wind Turbines
EnergiesThis study analyzes the performance degradation of traditional hybrid wind turbines under high blade-tip-speed ratio conditions and proposes solutions through two-dimensional Computational Fluid Dynamics (CFD) simulations.
Wendong Zhang +7 more
doaj +1 more source
On the Propagation of Slip Fronts at Frictional Interfaces [PDF]
, 2012 The dynamic initiation of sliding at planar interfaces between deformable and rigid solids is studied with particular focus on the speed of the slip front.
C.H. Scholz +25 more
core +3 more sources