CFD analysis of the performance of different airfoils in ground effect

Zaheer, Zubin; Roy, Kousik; Nair, G.; Ragipathi, Vineeth; Niranjan, U. V.

doi:10.1088/1742-6596/1355/1/012006

Cited by 11 publications

(4 citation statements)

References 8 publications

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“…The development of promising high-speed transport vehicles requires optimization of their aerodynamic characteristics. Today, the study of their aerodynamic characteristics is possible using the following approaches: -full-scale tests [7,8]; -modeling in wind tunnels [9][10][11][12]; -modeling on special tracks [13]; -mathematical modeling using numerical methods [14][15][16][17].…”

Section: State-of-art Of Problemmentioning

confidence: 99%

A review of the problem of modeling the aerodynamics of small-sized ekranoplanes

Sokhatskyi,

Dreus,

Radovskyi

et al. 2024

MATEC Web Conf.

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A characteristic trend in the development of modern transport systems is the widespread introduction of unmanned technologies. One of the new vehicles that are promising for use as high-speed unmanned aerial vehicles are ekranoplanes (WIG crafts). Such devices use the principle of dynamic support above the surface. Therefore, the processes of aerodynamics are decisive for their reliable and effective operation. The presented work considers the problem of modeling aerodynamic processes during the movement of the vehicle near the surface. In contrast to studies in an unrestricted flow, the presence of a surface leads to a number of features that determine the need for special approaches to both physical and mathematical experiments. It is established that each of the methods can ensure the similarity of the modeled processes to the real ones within the defining limits. A brief review of methods of numerical modeling of ekranoplan aerodynamics is presented. The approaches, which based on the Navier-Stokes equations and method of discrete singularities, are considered. There are examples of calculation of the processes of wing aerodynamics herein. The advantages and disadvantages of viscous and inviscid models for research are shown.

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Section: State-of-art Of Problemmentioning

confidence: 99%

A review of the problem of modeling the aerodynamics of small-sized ekranoplanes

Sokhatskyi,

Dreus,

Radovskyi

et al. 2024

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…Based on the respective conditions, the aerofoil geometries are considered in three series, i.e. 6412, 7412, 8412, with a total number of 81 plot points [11,12]. The aerofoil have been a reliable source for an airstream inside the geometry to develop the aerodynamic force [8].…”

Section: Detailed Proceduresmentioning

confidence: 99%

Flow behaviour on aerofoils using CFD

Manda¹,

Chada²,

Surapaneni³

et al. 2020

J., mech. eng. autom., control. syst.

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The aerofoils which allow for the flow at a broader range of angles have a more significant impact on the power generation from the turbine. The conception and examination for the aerofoil geometry have been executed in the current work to evaluate the behaviour of the flow in terms of the velocity and pressure lineation. The work is intended to focus on analysing the flow behaviour along the surface of the aerofoil geometry. The aerofoil geometries are opted to be of new aerofoil type of NACA 8412 series. The aerofoil geometry was analysed for a constant angle of attack along the total length. This evaluation was done for the angle of attack ranging from 0° to 20° with 5° interval for each model. The inlet velocity for the flow along the surface of the aerofoil geometry was taken varied from 7.5 m/s to 10 m/s with 0.5 m/s interval for each model. The plot points for the geometries are generated using the Auto CAD for different angles. The further simulations and evaluations were executed using the Ansys Fluent software. On evaluating and considering the variable conditions, the optimum values are obtained for the aerofoil at 15° angle of inclination at an inlet velocity of 9 m/s. The software generated results when compared to the regression data generated ascertained to be in a good correlation with each other.

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“…Because CFD problems are defined by boundary conditions, it has allowed researchers to simulate more than just airfoils in isolation. Zaheer [5] simulated the ground effect by setting a moving wall as the bottom boundary. Some research has also focused on the modeling itself, such as Aqilah [6], who determined that mesh quality affected the results of a CFD simulation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Over Airfoil and Its Optimization

Wu²

2023

J. Phys.: Conf. Ser.

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Airfoils are one of the most important factors in determining an airplane’s ability to fly. As such, their optimization holds important ramifications for the continual need to improve airplane performance. In this paper, the optimization of airfoil design is explored through numerical computational fluid dynamics. This paper first investigates the effects of Angle of Attack on airfoil lift/drag ratios, which is shown to have a significant influence on the performance of airfoils. Then, the effects from thickness are explored, and it is found that the influence of thickness is highly dependent on the specific shape of airfoil. In addition, in order to further improve airfoil aerodynamic performance, a type of modified airfoil with an additional tip is developed and simulated. The results indicate that airfoils with additional tips can perform better, but only with the proper combination of tip parameter values. For example, the modified airfoil with a tip of 0.03 L length at a 25° tip angle bested that same airfoil without an additional tip. Finally, it is found that the Backpropagation machine-learning algorithm, when trained with prior simulation data, can quickly predict lift and drag coefficients of airfoils. The results in this paper could facilitate the further optimization of airfoil design.

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CFD analysis of the performance of different airfoils in ground effect

Cited by 11 publications

References 8 publications

A review of the problem of modeling the aerodynamics of small-sized ekranoplanes

A review of the problem of modeling the aerodynamics of small-sized ekranoplanes

Flow behaviour on aerofoils using CFD

Numerical Simulation of Flow Over Airfoil and Its Optimization

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