Results 121 to 130 of about 619,388 (381)

Innovative Dual Rotor Wind Turbine Design Based on Humpback Whale Blades: Simulation Analysis

open access: yesEnergy Science &Engineering, EarlyView.
To enhance the performance of wind turbines, this study investigates the integration of two wind energy harvesting systems. An optimal wind turbine configuration has been identified by using dual rotor wind turbine technology with a novel blade design known as the humpback blade, which is inspired by the fins of humpback whales. ABSTRACT To enhance the
Mais Alzgool   +2 more
wiley   +1 more source

Solid–Liquid Flow Analysis of Francis‐99 Turbine Runner: Effects of Sediment Concentration

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT This study examines the behavior of solid–liquid two‐phase flow within the runner of the Francis‐99 turbine. Numerical simulations were carried out by Ansys Fluent software using the Mixture multiphase flow model along with the Realizable k‐ε turbulence model to analyze the solid–liquid two‐phase flow in the turbine runner.
Kang Xu   +6 more
wiley   +1 more source

Investigating crack formation in IN738LC Ni-based superalloy fabricated by laser powder-bed fusion process

open access: yesJournal of Materials Research and Technology
Cracking is one of the most important challenges in the laser powder-bed fusion (LPBF) processing of high-γʹ nickel-based superalloys. In this work, crack susceptibility of the IN738LC superalloy fabricated by LPBF with different volume energy densities (
M. Hafezi   +6 more
doaj  

Analytical studies of new airfoils for wind turbines [PDF]

open access: yes, 1981
Computer studies were conducted to analyze the potential gains associated with utilizing new airfoils for large wind turbine rotor blades. Attempts to include 3-dimensional stalling effects were inconclusive.
Calhoun, J. T., Wentz, W. H., Jr.
core   +1 more source

Bionic Design of Wind Turbine Blade Based on Long-Eared Owl's Airfoil

open access: yesApplied Bionics and Biomechanics, 2017
The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl's wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively.
W. Tian   +6 more
semanticscholar   +1 more source

Design and Optimization of a Robust Wide‐Area Damping Controller for Mitigating Inter‐Area Oscillations in Wind‐Integrated Power Systems

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT In power networks, low‐frequency oscillations—particularly inter‐area oscillations—pose a serious threat to system stability because of disruptions like short‐circuit faults and the increasing use of renewable energy sources like wind farms. To lessen the negative impacts of time delays when sending distant signals, this study presents a novel
Mehrdad Ahmadi Kamarposhti   +4 more
wiley   +1 more source

Development of high performance composite bend-twist coupled blades for a horizontal axis tidal turbine

open access: yes, 2009
Development of a design methodology for a composite, bend-twist coupled, tidal turbine blade has been undertaken. Numerical modelling was used to predict the response of the main structural member for the adaptive blade.
Boyd, S.W.   +2 more
core  

A New Add‐On Flap for Performance Improvement of Small Horizontal Axis Wind Turbines

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT In the present study, two types of add‐on flaps tangential to the camber line of small horizontal axis wind turbine blade are introduced and their performances on the production power are investigated. The wind turbine of Berlin University (TU‐BERT) is used as the base turbine and the flaps' length, angle, and their locations on the blade are ...
Nima Alizadeh, Alireza Jahangirian
wiley   +1 more source

ANALYSIS OF DYNAMIC LOAD STRENGTH OF WIND TURBINE ROOT BOLT UNDER TURBULENCE MODEL

open access: yesJixie qiangdu, 2021
As an important connecting and fastening part of wind turbine blade,blade root bolt plays an important role in the operation of wind turbine. In this paper,the connecting bolt between blade and pitch bearing of 2 MW wind turbine is taken as the research ...
HAN Wen, CHEN ChangZheng
doaj  

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