Results 61 to 70 of about 75,283 (262)

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, Mütschard, Lutz, Churchfield, Matt, Sirnivas, Senu   +3 more
openaire   +2 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

PERFORMANCE ANALYSIS OF A HELICAL SAVONIUS ROTOR WITHOUT SHAFT AT 45° TWIST ANGLE USING CFD

Journal of Urban and Environmental Engineering, 2013
Helical Savonius rotor exhibits better performance characteristics at all the rotor angles compared to conventional Savonius rotor. However studies related to the performance measurement and flow physics of such rotor are very scarce.
Bachu Deb, Rajat Gupta, R.D. Misra
doaj   +3 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Film cooling characteristics of squealer tip of a turbine blade

Xibei Gongye Daxue Xuebao
The high-speed and high-temperature gap leakage flow in the turbine blade tip clearance directly scours the tip of the rotor blade and generates a local high-temperature region, so the active and passive control of the gap leakage flow is very important.
WU Fangfang, XU Weijiang, LIU Cunliang, SHI Jingyin, YU Zeyu   +4 more
doaj   +1 more source

Variable Pitch Approach for Performance Improving of Straight-Bladed VAWT at Rated Tip Speed Ratio

Applied Sciences, 2018
This paper presents a new variable pitch (VP) approach to increase the peak power coefficient of the straight-bladed vertical-axis wind turbine (VAWT), by widening the azimuthal angle band of the blade with the highest aerodynamic torque, instead of ...
Zhenzhou Zhao, Ruixin Wang, Wenzhong Shen, Tongguang Wang, Bofeng Xu, Yuan Zheng, Siyue Qian   +6 more
doaj   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Effect of tip speed ratio on power coefficient of double savonius hydrokinetic water turbines [PDF]

EPJ Web of Conferences
The growing global emphasis on sustainable development has increased demand for renewable energy sources. Hydrokinetic turbines have emerged as efficient and environmentally sustainable solutions for power generation in flowing water.
Heru Adiwibowo Priyo, Yuwono Triyogi, Aries Widodo Wawan   +2 more
doaj   +1 more source

Studi Eksperimental Pengaruh Jumlah Sudu terhadap Daya pada Turbin Angin Sumbu Vertikal Tipe Rotor Crossflow untuk Optimalisasi Angin di Wilayah Pantai Kota Balikpapan

Rekayasa Mesin, 2020
Wind energy was one of the renewable energy alternatives with the biggest potential in Indonesia to be used as a power plant. Balikpapan is an area with extensive coastal areas with great wind potential.
Illa Rizianiza, Diky Herfandi
doaj   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source