Results 51 to 60 of about 5,604 (312)

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Towing Resistance and Design of a Towing Scheme for a Floating Wind Turbine

Journal of Marine Science and Engineering
Towing operation is an important part of the transportation and installation of offshore floating wind turbines. The study of towing resistance is of great significance to the efficient construction of floating wind turbine towing.
Pengfei Gao, Xiaobin Yuan, Shihua Liu, Wen Lin, Mingsheng Chen, Zhiqiang Wang, Yichang Tang, Xingyu Jiang   +7 more
doaj   +1 more source

Design of Variable Pitch Control Method for Floating Wind Turbine

Energies, 2023
Because of the randomness of wind speed and the nonlinearity of the dynamic equation of variable pitch control, it is difficult to establish an accurate dynamic equation of variable pitch of floating fan. In view of this situation, this paper takes the 5
Jiawang Yuan, Zhijiang Cheng, Dengquan Liu   +2 more
doaj   +1 more source

Improving Wind Turbine Pitch Control by Effective Wind Neuro-estimators [PDF]

, 2021
Data about wind are usually available from different databases, for different locations. In general, this information is the average of the wind speed over time. The wind reports are crucial for designing wind turbine controllers.
Santos Peñas, Matilde, Sierra-García, Jesús Enrique   +1 more
core   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Strategia di ottimizzazione vibroacustica per un gearbox di turbina eolica. Vibroacoustic optimisation strategy for a wind turbine gearbox [PDF]

, 2013
This thesis is the result of a collaboration with ZF Wind Power, to investigate the approach to derive a simplified geometry of a state-of-the-art gearbox of a wind turbine, and to optimise this for noise and vibration. The reproduction of the simplified
Piva, Marco
core  

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Numerical Methodologies for the Analysis of Horizontal-Axis Floating Offshore Wind Turbines (F-HAWTs): A State-of-the-Art Review

Energies
In recent decades, wind turbine installations have become a popular option to meet the world’s growing demand for energy. Both onshore and offshore wind turbines form pivotal components of the electricity sector.
Naghmeh Akbari Zadeh, Peter Ryan, David M. Kennedy, Fergal O’Rourke   +3 more
doaj   +1 more source

[Report of] Specialist Committee V.4: ocean, wind and wave energy utilization [PDF]

, 2009
The committee's mandate was :Concern for structural design of ocean energy utilization devices, such as offshore wind turbines, support structures and fixed or floating wave and tidal energy converters. Attention shall be given to the interaction between
Liu, P., Waegter, J., Nielsen, F.G., Le Boulluec, M., Suzuki, H., Tarp-Johansen, N.J., Zong, Z., Argyriadis, K., Fonseca, N., Sirkar, J., Turnock, S.R.   +10 more
core  

Technical Definition of the TetraSpar Demonstrator Floating Wind Turbine Foundation [PDF]

, 2020
With the deployment of the TetraSpar demonstrator, a significant cost-reduction is realized in the field of offshore floating wind turbines. The TetraSpar floating wind turbine foundation brings a milestone that emphasizes on a modular and fully ...
Stiesdal, Henrik, Thomsen, Jonas Bjerg, Walkusch Jensen, Morten, Jonas Bjerg Thomsen, Henrik Stiesdal, Andersen, Morten Thøtt, Morten Walkusch Jensen, Borg, Michael, Scott Urquhart, Michael Borg, Morten Thøtt Andersen, Urquhart, Scott   +11 more
core   +1 more source