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Characteristics of Near Surface Turbulence Intensity before and after Wind Farm Construction
The influence of wind farms on atmospheric boundary layer structures, especially turbulence characteristics, is an important topic in the field of wind energy meteorology.Taking Qilinshan Wind Farm in Shangyi County, Hebei Province as the research object,
Xin XIA +6 more
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Wind turbines’ economic and secure operation can be optimized through accurate ultra-short-term wind power and speed forecasts. Turbulence, considered as a local short-term physical wind phenomenon, affects wind power generation.
Hao Chen, Yngve Birkelund, Fuqing Yuan
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Difference in load predictions obtained with effective turbulence vs. a dynamic wake meandering modeling approach [PDF]
According to the international standard for wind turbine design, the effects of wind turbine wakes on structural loads can be considered in two ways: (1) by augmenting the ambient turbulence levels with the effective turbulence model (EFF) and then ...
P. Doubrawa, K. Shaler, J. Jonkman
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Wind tunnel tests remain crucial to solving the wind-induced issues, such as buffeting. The turbulence impacts on the aerodynamic forces is vital to buffeting responses of a bridge, which has been neglected, for that traditional passive wind tunnel test ...
Lin Zhao +4 more
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Cross-contamination effect on turbulence spectra from Doppler beam swinging wind lidar [PDF]
Turbulence velocity spectra are of high importance for the estimation of loads on wind turbines and other built structures, as well as for fitting measured turbulence values to turbulence models.
F. Kelberlau, J. Mann
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Long span bridges buffeting response to wind turbulence [PDF]
The buffeting response of the cable-supported bridges is studied. Several wind turbulence models are summarized and wind field models for practical application in bridge and structural engineering is proposed. The wind turbulence model comprises the mean
R.N. Guzeev, A. Domaingo
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Wind energy has grown significantly over the last decade. With this, various improvements in the design of the wind turbine are geared towards increasing the reliability of several components.
Jui-Hung Liu +2 more
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Gear fatigue damage for a 500 kW wind turbine exposed to increasing turbulence using a flexible multibody model [PDF]
This paper investigates gear tooth fatigue damage in a 500 kW wind turbine using FLEX5 and own multibody code. FLEX5 provides the physical wind field, rotor and generator torque and the multibody code is used for obtaining gear tooth reaction forces in ...
Martin Felix Jørgensen +2 more
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Wind turbines are usually clustered in wind farms which causes the downstream turbines to operate in the turbulent wakes of upstream turbines. As turbulence is directly related to increased fatigue loads, knowledge of the turbulence in the wake and its ...
Ingrid Neunaber +4 more
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Evaluation of CFD URANS Turbulence Models for the Building under Environmental Wind Flow with Experimental Validation [PDF]
Wind flow on and around buildings attains more importance among architectures, builders, urban planners, structural engineers, and wind engineers. Wind tunnel experiments and wind flow assessments of full-scale buildings are expensive and complex in ...
K. B. Rajasekarababu +2 more
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