Two-Dimensional Analysis of Wind Turbine Blade Profiles with Fluid-Structure Interactions

2014 ◽  
Author(s):  
T. Grätsch ◽  
D. Pieper
Keyword(s):  
Wind Turbine ◽  
Dimensional Analysis ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Two Dimensional ◽  
Fluid Structure Interactions ◽  
Fluid Structure

scholarly journals Unsteady Flow and Vibration Analysis of the Horizontal-Axis Wind Turbine Blade under the Fluid-Structure Interaction

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Rui Zhu ◽  
Da-duo Chen ◽  
Shi-wei Wu
Keyword(s):  
Unsteady Flow ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Horizontal Axis ◽  
Leeward Side ◽  
Horizontal Axis Wind Turbine ◽  
Fluid Structure ◽  
Fluid Field ◽  
Stress Fluctuation

A 1.5 MW horizontal-axis wind turbine blade and fluid field model are established to study the difference in the unsteady flow field and structural vibration of the wind turbine blade under one- and two-way fluid-structure interactions. The governing equations in fluid field and the motion equations in structural were developed, and the corresponding equations were discretized with the Galerkin method. Based on ANSYS CFX fluid dynamics and mechanical structural dynamics calculation software, the effects of couplings on the aerodynamic and vibration characteristics of the blade are compared and analyzed in detail. Results show that pressure distributions at different sections of the blade are concentrated near the leading edge, and the leeward side of two-way coupling is slightly higher than that of one-way coupling. Deformation along the blade span shows a nonlinear change under the coupling effect. The degree of amplitude attenuation in two-way coupling is significantly greater than that in one-way coupling because of the existence of aerodynamic damping. However, the final amplitude is still higher than the one-way coupling. The Mises stress fluctuation in the windward and leeward sides is more obvious than one-way coupling, and the discrepancy must not be ignored.

scholarly journals Fluid-structure coupled computations of the NREL 5MW wind turbine blade during standstill

2016 ◽  
Vol 753 ◽  
pp. 022034 ◽  
Author(s):  
B. Dose ◽  
H. Rahimi ◽  
I. Herráez ◽  
B. Stoevesandt ◽  
J. Peinke
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Fluid Structure

Experimental and Numerical Investigation of Inflow Turbulence on the Performance of Wind Turbine Airfoils

2013 ◽  
Author(s):  
O. Eisele ◽  
G. Pechlivanoglou ◽  
C. N. Nayeri ◽  
C. O. Paschereit
Keyword(s):  
Wind Tunnel ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Tunnel Test ◽  
Wind Turbine Blade ◽  
Two Dimensional ◽  
Airfoil Surface ◽  
Wind Tunnel Measurements ◽  
Inflow Turbulence ◽  
The Impact

Wind turbine blade design is currently based on the combination of a plurality of airfoil sections along the rotorblade span. The two-dimensional airfoil characteristics are usually measured with wind tunnel experiments or computed by means of numerical simulation codes. The general airfoil input for the calculation of the rotorblade power characteristics as well as the subsequent aerodynamic and aeroelastic loads are based on these two-dimensional airfoil characteristics. In this paper, the effects of inflow turbulence and wind tunnel test measurement deviations are investigated and discussed, to allow considerations of such effects in the rotorblade design process. The results of CFD simulations with various turbulence models are utilized in combination with wind tunnel measurements in order to assess the impact of such discrepancies. It seems that turbulence, airfoil surface roughness and early transition effects are able to contribute significantly to the uncertainty and scattering of measurements. Various wind tunnel facilities generate different performance characteristic curves, while grid-generated turbulence is generally not included in the wind tunnel measurements during airfoil characterization. Furthermore the correlation of grid-generated wind tunnel turbulence with the atmospheric turbulence time and length scales is not easily achieved. All the aforementioned uncertainties can increase the performance scattering of current wind turbine blade designs as well as the generated aeroelastic loads. A brief assessment of the effect of such uncertainties on wind turbine performance is given at the last part of this work by means of BEM simulations on a wind turbine blade.

WALL RESOLVED FLUID-STRUCTURE INTERACTION SIMULATIONS OF A MODERN WIND TURBINE BLADE

2021 ◽  
Author(s):  
Mohsen Lahooti ◽  
Rodolfo Curci Puraca ◽  
Bruno Carmo ◽  
Rafael Palacios ◽  
Spencer Sherwin
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Fluid Structure Interaction ◽  
Wind Turbine Blade ◽  
Fluid Structure ◽  
Structure Interaction

Structural design of carbon/epoxy bio-inspired wind turbine blade using fluid/structure simulation

2016 ◽  
Vol 40 (13) ◽  
pp. 1832-1845 ◽  
Author(s):  
Mariana Correa-Álvarez ◽  
Valentina Villada-Quiceno ◽  
Julián Sierra-Pérez ◽  
Juan Guillermo García-Navarro ◽  
César Nieto-Londoño
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Structural Design ◽  
Wind Turbine Blade ◽  
Fluid Structure ◽  
Structure Simulation
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