POD &amp; MLSM Application on DU96-W180 Wind Turbine Airfoil

Halawa, Amr M.; Elhadidi, Basman; Yoshida, Shigeo

doi:10.5109/1808451

Cited by 7 publications

(11 citation statements)

References 11 publications

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“…The inflow wind speed is fixed at 11.4 m/s, and rotor starts spinning at 0 rad/s and 4 rad/s. Figure 14 shows the comparison of the rotation rate obtained from the reduced-order model to that obtained from the CFD simulations performed by Bazilevs [7]. For both cases (shown in Figure 14), the proposed ROM shows good agreement in CFD simulation.…”

Section: Fsi Modelling Of Windspire Vawtmentioning

confidence: 82%

“…The attractiveness of the POD method lies in the fact that it is a linear procedure and efficient in the design of robust feedback controllers leading to bettercontrolled airflow over aerofoils. Afterwards, much computational and experimental work has been performed by using this method to validate its effectiveness [6][7][8].…”

Section: Methodsmentioning

confidence: 99%

“…The model is established using ANSYS FLUENT coupled with the Transient Structure modules using the k-ω SST turbulence model. This two-equation model is suitable for modelling the boundary layers as well as the far field flows, and therefore it has been used extensively in studies involving wind turbine blades and aeroelastic problems with reasonable results [7,34].…”

Section: Oscillating Aerofoilmentioning

confidence: 99%

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POD-Galerkin Based Reduced Order Modelling for Flow-Structure Interactions

Dong¹,

Ingham²,

Ma³

et al. 2021

Int J Astronaut Aeronautical Eng

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Fluid-structure interactions, especially full rotor simulations for wind turbines, are still computationally inefficient. Although the Proper Orthogonal Decomposition (POD) -Galerkin based Reduced Order Modelling (ROM) has become a popular tool to solve many fluid dynamics problems, most studies are limited to fluid flows in a fixed or infinite domain. The ROM, with either spatially or temporally adaptive snapshots, are still lacking in research, and in this paper, a POD-Galerkin based ROM for a FSI problem is proposed. The aim is to reduce the complexity of the costly solution techniques for solving the governing non-linear unsteady partial differential equations that govern the aerodynamic flows over fluid-solid systems with moving interfaces. This novel POD-based ROM is applied to several cases of plunging-pitching aerofoils as well as fluid-structure interaction simulations of a 3D vertical axis wind turbine full rotor simulation. For both applications, this model is shown to be very effective when performed with the proposed snapshot grids, thus reducing the computational cost while maintaining the same level of accuracy.

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Section: Fsi Modelling Of Windspire Vawtmentioning

confidence: 82%

Section: Methodsmentioning

confidence: 99%

Section: Oscillating Aerofoilmentioning

confidence: 99%

See 1 more Smart Citation

POD-Galerkin Based Reduced Order Modelling for Flow-Structure Interactions

Dong¹,

Ingham²,

Ma³

et al. 2021

Int J Astronaut Aeronautical Eng

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show abstract

“…Where, 𝒕𝒕 is the simulation runtime, 𝑓𝑓 is chosen from various frequencies including the dominant frequency resulted from FFT analysis, and DarcyForchModelCoeff 19) are defined as prescribed in OpenFOAM's fvOptions by Halawa 18,23) . The main objective of this model is to change the density of a bulk of cells spanning the passage of the slat as shown in Fig.…”

Section: = |Sin(2 Fmentioning

confidence: 99%

Aerodynamic Performance Enhancement Using Active Flow Control on DU96-W-180 Wind Turbine Airfoil

Halawa¹,

Elhadidi²,

Yoshida³

2018

Evergreen

Self Cite

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In this work, the objective was to investigate the influence of Active Flow Control on the improvement of a DU96-W-180 airfoil aerodynamic performance. A numerical simulation was done for incompressible unsteady low Reynolds Number flow at high angle of attack. The innovative approach was the use of an "Active Slat" where the periodic blowing effect was achieved by periodically opening and closing the slat passage. The major benefit of this concept is being flexible to a desired operating condition. A new OpenFOAM ® solver was developed from the existing pisoFoam solver to simulate the active slat flow control technique. To get the best aerodynamic performance, the active slat should operate at the domain dominant frequencies. A Fast Fourier Transform (FFT) was performed to achieve the optimum slat excitation frequency. These frequencies will help in controlling the inherent instabilities in the boundary layer and thus improving the aerodynamic performance. Finally, active flow control simulations were applied using different excitation. Using the optimum FFT excitation frequency ( 0.68 f = in the wake region) yields the best aerodynamic improvement of all tested frequencies. Improvements in lift coefficient were achieved up to 8%. Hence, the slatted airfoil is superior to the conventional clean configuration airfoil.

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“…ANSYS Fluent or CFX (high performance CFD solver) are used in ANSYS workbench. Some of the parameters obtained from flow simulation are the wind pressure, lift and drag forces acting on the quadcopter surface 6), 7) .…”

Section: Introductionmentioning

confidence: 99%

Structural Integrity Study for a Quadcopter Frame to Be Deployed for Pest Control

Ibrahim¹,

Alkali²,

Adedipe³

et al. 2021

Evergreen

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Quadcopters are one of the most versatile unmanned aerial vehicles deployed for various purposes. In this study it is going to be used as part of a system used for bird control therefore the structural integrity is investigated. The aim of the paper is to investigate the structural and aerodynamic behaviour of a quadcopter intended for bird control. A model of the drone has been developed in SolidWorks, then structural along with flow analysis carried out using ANSYS software. The structural analysis reveals a maximum stress of 39.13 MPa of the arm due to thrust and 2.6 MPa on the frame due to load which are within the safe range for use of purpose.

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POD & MLSM Application on DU96-W180 Wind Turbine Airfoil

Cited by 7 publications

References 11 publications

POD-Galerkin Based Reduced Order Modelling for Flow-Structure Interactions

POD-Galerkin Based Reduced Order Modelling for Flow-Structure Interactions

Aerodynamic Performance Enhancement Using Active Flow Control on DU96-W-180 Wind Turbine Airfoil

Structural Integrity Study for a Quadcopter Frame to Be Deployed for Pest Control

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