Coupled multi-body dynamics and CFD for wind turbine simulation including explicit wind turbulence

At present, using structural dynamics models is the most commonly used and effective method to simulate the dynamic characteristics of large wind turbine. This paper used the multi-body dynamics method to construct the precise multi-flexible body dynamics model of a wind turbine coupled with aerodynamics/structure/control. The model can realize multi-disciplinary co-simulation interactions, and the accuracy was verified by comparing the numerical simulation data with the measured data. The allowable yaw error of a wind turbine is typically simplified to two or three fixed values according to the wind speed range, which cannot often adapt to the high and unsteady change characteristics of wind speed and direction under special conditions. In this paper, an accurate calculation method of allowable yaw error threshold based on measured wind speed and the corresponding optimization strategy of large yaw error are proposed, which not only avoid unnecessary shutdown and improve the availability, but also reduce the load of yaw bearing and improve the safety.

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Wind Turbine Simulation Program Development using an Aerodynamics Code and a Multi-Body Dynamics Code

New & Renewable Energy ◽

10.7849/ksnre.2011.7.4.050 ◽

2011 ◽

Vol 7 (4) ◽

pp. 50-57

Author(s):

Jin-Seop Song ◽

Chae-Whan Rim ◽

Yong-Yun Nam ◽

Dae-Sung Bae

Keyword(s):

Wind Turbine ◽

Program Development ◽

Simulation Program ◽

Body Dynamics ◽

Multi Body

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Large Wind Turbine Dynamic Modeling and Simulation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.34-35.1098 ◽

2010 ◽

Vol 34-35 ◽

pp. 1098-1103

Author(s):

An Wu ◽

Wen Lei Sun ◽

Ping Ping Wang

Keyword(s):

Optimal Design ◽

Wind Turbine ◽

Theoretical Study ◽

System Model ◽

Operating Environment ◽

Body Dynamics ◽

Multi Body ◽

Large Wind ◽

Turbine Model ◽

Turbine Drive

The system produces strenuous vibration when the wind turbine is operating, it will be a great impact on running precision and components’ life of the whole system, the theoretical study of the research of wind turbine’s vibration is incomplete because of the complexity of the wind turbine’s structure and operating environment, as well as the difficulty of theoretical analysis. In this paper, the FAST established dynamic model of wind turbine, and preliminarily study the establishment of the wind turbine drive system model with multi-body dynamics software, finally dynamic response have been analyzed that based on the establishment of whole wind turbine model, which laid the foundation for wind turbine dynamic characteristic and the system’s optimal design.

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Influence of Wind Turbulence on Yaw-control Gears in Wind Turbine

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.129.315 ◽

2009 ◽

Vol 129 (2) ◽

pp. 315-323

Author(s):

Kazuo Suzuki ◽

Naoki Hoshino ◽

Noboru Inomata ◽

Hiroshi Kimura ◽

Tamiya Fujiwara

Keyword(s):

Wind Turbine ◽

Yaw Control ◽

Wind Turbulence

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Simulation analysis of helicopter blade properties based on multi-body dynamics

Advanced Control, Automation and Robotics ◽

10.2495/acar140611 ◽

2015 ◽

Author(s):

J.L. He ◽

Y. Tan ◽

Y.R. Ma ◽

L. Xu ◽

T. Wang

Keyword(s):

Simulation Analysis ◽

Helicopter Blade ◽

Body Dynamics ◽

Multi Body

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Estimating maximum bite performance in Tyrannosaurus rex using multi-body dynamics

Biology Letters ◽

10.1098/rsbl.2012.0056 ◽

2012 ◽

Vol 8 (4) ◽

pp. 660-664 ◽

Cited By ~ 54

Author(s):

K. T. Bates ◽

P. L. Falkingham

Keyword(s):

Body Size ◽

Feeding Behaviour ◽

Ontogenetic Change ◽

Positive Allometry ◽

Musculoskeletal Models ◽

Terrestrial Animal ◽

Body Dynamics ◽

Mode Of Life ◽

Scaling Analyses ◽

Multi Body

Bite mechanics and feeding behaviour in Tyrannosaurus rex are controversial. Some contend that a modest bite mechanically limited T. rex to scavenging, while others argue that high bite forces facilitated a predatory mode of life. We use dynamic musculoskeletal models to simulate maximal biting in T. rex . Models predict that adult T. rex generated sustained bite forces of 35 000–57 000 N at a single posterior tooth, by far the highest bite forces estimated for any terrestrial animal. Scaling analyses suggest that adult T. rex had a strong bite for its body size, and that bite performance increased allometrically during ontogeny. Positive allometry in bite performance during growth may have facilitated an ontogenetic change in feeding behaviour in T. rex , associated with an expansion of prey range in adults to include the largest contemporaneous animals.

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Sir Robert Stawell Ball and methodologies of modern screw theory

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1243/0954406021524828 ◽

2002 ◽

Vol 216 (1) ◽

pp. 1-11 ◽

Cited By ~ 9

Author(s):

H Lipkin ◽

J Duffy

Keyword(s):

Computational Geometry ◽

Rigid Body ◽

Lie Algebra ◽

Screw Theory ◽

Mechanical Design ◽

Ball Screw ◽

Dual Numbers ◽

Body Dynamics ◽

Rigid Body Mechanics ◽

Multi Body

The theory of screws was largely developed by Sir Robert Stawell Ball over 100 years ago to investigate general problems in rigid body mechanics. Nowadays, screw theory is applied in many different but related forms including dual numbers, Plilcker coordinates and Lie algebra. An overview of these methodologies is presented along with a perspective on Ball. Screw theory has re-emerged after a hiatus to become an important tool in robot mechanics, mechanical design, computational geometry and multi-body dynamics.

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