Results 21 to 30 of about 97,324 (334)

Study on Linear and Nonlinear Thermal Buckling Mode and Instability Characteristics for Engine Rotating Thin-Walled Blade

open access: yesApplied Sciences, 2022
The thermal shock load has an important effect on the stability of thin-walled blades under high-speed operation of aircraft engines. According to the actual working conditions, the linear interpolation distribution of blade temperature is obtained by ...
Xiuhua Men   +5 more
doaj   +1 more source

Blade Design and Aerodynamic Performance Analysis of a 20 MW Wind Turbine for LCoE Reduction

open access: yesEnergies, 2023
The aim of this study is to develop a blade mass model that incorporates a low-induction rotor (LIR) and a low-specific power concept to reduce aerodynamic loads and lower the Levelized Cost of Energy (LCoE).
Kang-Ho Jang, Ki-Wahn Ryu
doaj   +1 more source

Validation and accommodation of vortex wake codes for wind turbine design load calculations [PDF]

open access: yesWind Energy Science, 2020
The computational effort for wind turbine design load calculations is more extreme than it is for other applications (e.g., aerospace), which necessitates the use of efficient but low-fidelity models. Traditionally the blade element momentum (BEM) method
K. Boorsma   +4 more
doaj   +1 more source

Reduction of load torque of mowing blade by movement speed control of mowing robot

open access: diamondThe Proceedings of Conference of Tokai Branch, 2017
Masataka TAKAHASHI, Yoshihisa UCHIDA
openaire   +2 more sources

Performance of Microtabs and Trailing Edge Flaps in Wind Turbine Power Regulation: A Numerical Analysis Using WTSim [PDF]

open access: yesJournal of Renewable Energy and Environment, 2022
The effectiveness of trailing-edge flaps and microtabs in damping 1P-3P loads has been proven through a series of research work during the past decade. This paper presents the results of an investigation into the effectiveness of these devices in power ...
Alireza Maheri   +2 more
doaj   +1 more source

Influence of Cutting Angle of Blade Trailing Edge on Unsteady Flow in a Centrifugal Pump Under Off-Design Conditions

open access: yesApplied Sciences, 2020
The parameters of blade trailing edge have an important influence on the performance of centrifugal pump and internal unstable flow. In this study, the influences of cutting angles of blade trailing edge on unstable pressure pulsation and unstable flow ...
Baoling Cui   +3 more
doaj   +1 more source

Study on the Intelligent Modeling of the Blade Aerodynamic Force in Compressors Based on Machine Learning

open access: yesMathematics, 2021
In order to obtain the aerodynamic loads of the vibrating blades efficiently, the eXterme Gradient Boosting (XGBoost) algorithm in machine learning was adopted to establish a three-dimensional unsteady aerodynamic force reduction model.
Mingming Zhang, Shurong Hao, Anping Hou
doaj   +1 more source

Numerical and Experimental Investigations of Axial Flow Fan with Bionic Forked Trailing Edge

open access: yesMachines, 2023
To improve the performance of the aerodynamic properties and reduce the aerodynamic noise of an axial flow fan in the outdoor unit of an air conditioner, this study proposed a bionic forked trailing-edge structure inspired by the forked fish caudal fin ...
Zhong Liang   +5 more
doaj   +1 more source

A novel approach to structural load control using intelligent actuators [PDF]

open access: yes, 2009
The recent trend towards large multi-MW wind turbines resulted in the role of the control system becoming increasingly important. The extension of the role of the controller to alleviate structural loads has motivated the exploration of novel control ...
Dominguez, S.   +4 more
core   +1 more source

Blade root moment sensor failure detection based on multibeam LIDAR for fault-tolerant individual pitch control of wind turbines [PDF]

open access: yes, 2014
Detection of blade root moment sensor failures is an important problem for fault-tolerant individual pitch control, which plays a key role in reduction of uneven blade loads of large wind turbines.
Ioannou P., Stotsky A., Taylor G.
core   +1 more source

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