CFD RANS Simulation of 2D Circulation Control Airfoil

Carmona, H.; Cházaro, A.; Traslosheros, A.; Iturbe, A.; Hernandez, José L.

doi:10.1007/978-3-319-27965-7_7

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…The Green-Gauss node-based method was used to calculate the gradient and derivative of variables at the center of the element cell through Ansys Fluent numerical simulation, and heat transfer was not considered. As two-dimensional calculations can also obtain results that are relatively close to experimental ones [26,27], the airfoil was calculated using a two-dimensional model. The model uses the Integrated Computer Engineering and Manufacturing code for Computational Fluid Dynamics (ICEM-CFD) for grid division, and the airfoil outer flow field radius is 20 chord.…”

Section: Calculation Model and Reliability Verificationmentioning

confidence: 96%

Aerodynamic Performance Analysis of a Modified Joukowsky Airfoil: Parametric Control of Trailing Edge Thickness

et al. 2021

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In order to ensure the blade strength of large-scale wind turbine, the blunt trailing edge airfoil structure is proposed, aiming at assessing the impact of the trailing edge shape on the flow characteristics and airfoil performance. In this paper, a Joukowsky airfoil is modified by adding the tail thickness parameter K to achieve the purpose of accurately modifying the thickness of the blunt tail edge of the airfoil. Using Ansys Fluent as a tool, a large eddy simulation (LES) model was used to analyze the vortex structure of the airfoil trailing edge. The attack angles were used as variables to analyze the aerodynamic performance of airfoils with different K-values. It was found that when α = 0°, α = 4°, and α = 8°, the lift coefficient and lift–drag ratio increased with increasing K-value. With the increase in the angle of attack from 8° to 12°, the lift–drag ratio of the airfoil with the blunt tail increased from +70% to −7.3% compared with the original airfoil, which shows that the airfoil with the blunt trailing edge has a better aerodynamic performance at a small angle of attack. The aerodynamic characteristics of the airfoil are affected by the periodic shedding of the wake vortex and also have periodic characteristics. By analyzing the vortex structure at the trailing edge, it was found that the value of K can affect the size of the vortex and the position of vortex generation/shedding. When α = 0°, α = 4°, and α = 8°, the blunt trailing edge could improve the aerodynamic performance of the airfoil; when α = 12°, the position of vortex generation changed, which reduced the aerodynamic performance of the airfoil. Therefore, when designing the trailing edge of an airfoil, the thickness of the trailing edge can be designed according to the specific working conditions. It can provide valuable information for the design and optimization of blunt trailing edge airfoil.

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Section: Calculation Model and Reliability Verificationmentioning

confidence: 96%

Aerodynamic Performance Analysis of a Modified Joukowsky Airfoil: Parametric Control of Trailing Edge Thickness

et al. 2021

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Pulsed Jet Characteristics of Circulation Control Airfoil

Lei

Zhang

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

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Compared with the steady jet, the mass flow consumed by the pulsed jet is lower, which is of great significance for solving the jet source in the circulation control technology. In order to further study the effects of different parameters on energy consumption and aerodynamic coefficient pulse in pulsed jet, based on the Reynolds average N-S equation, the aerodynamic characteristic calculation and flow field analysis of the circulation control airfoil under the action of pulsed jet are carried out, and the aerodynamic benefit is evaluated with the combination of energy consumption and aerodynamic coefficient fluctuation. The results show that: Pulsed jet is more suitable for use at high angle of attack. By using the combination of pulsed jet and steady jet, good results can be obtained in three aspects: time-averaged lift coefficient, lift coefficient fluctuation and energy consumption. The research results can be used as a reference for guiding the use of pulsed jet in circulation control technology.

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CFD RANS Simulation of 2D Circulation Control Airfoil

Cited by 2 publications

References 12 publications

Aerodynamic Performance Analysis of a Modified Joukowsky Airfoil: Parametric Control of Trailing Edge Thickness

Aerodynamic Performance Analysis of a Modified Joukowsky Airfoil: Parametric Control of Trailing Edge Thickness

Pulsed Jet Characteristics of Circulation Control Airfoil

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