Investigation of Aerodynamic Characteristics of a Wing Model With RGV Winglet

Krishnan, Sivaraj Gopal; Ishak, M. H. H.; Nasirudin, Muhammad Azwan; Ismail, Farzad

doi:10.5028/jatm.v12.1108

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…Consequently, the development and optimization of these devices has been the subject of several studies. In a pioneering study, Krishnan et al (2020) investigated the application of a Rüppell's Griffon Vulture (RGV) type winglet to a rectangular wing. The results showed that by using an RGV winglet, there was an increase of 25% to 75% in aerodynamic efficiency compared to other types of winglet configurations.…”

Section: Introductionmentioning

confidence: 99%

Computational numerical analysis of drag force on a standard AeroDesign wing in accordance with winglet application

et al. 2021

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This work goal is to achieve a better flight performance and to support the loading of the highest payload possible. The aerodynamics sector works to improve the aircraft aerodynamic efficiency; therefore, the aerodynamicist looks for the best solution to contribute to the aircraft efficiency by reducing drag forces. The induced drag comes from the lift force, it is related to the escape vortices which occur at the wing tips and it is the most relevant drag component. The use of structural components, as winglets, helps to reduce these vortices and the total aircraft drag. In the context of the SAE Brazil AeroDesign competition, the use of these components can support the project requirements due to the regulatory restrictions. The methodology employed was a simulation using the ANSYS CFX® software for wings modeled with different winglet configurations and the same boundary conditions to verify the best application for the studied wing. The winglet dihedral angle was set at 45°, the strings were maintained and the winglet height was used as a parameter. In the simulations, the wing attack angle was varied to obtain the variation of the drag force. With the obtained results, it was possible to verify that the wings lift forces with h=10% of the half-span winglet have lower values of drag force and present higher values of lift force, for all the analyzed angles, with a variation of up to 6 N of lift force, regarding to the wing without winglet. It is concluded the possibility to observe an improvement in the performance of the wing with the application of the winglet, in the above-mentioned context, and the compensation of a higher efficiency can help competition teams to carry more load on the aircraft due to the lift increase, and to assist the aircraft takeoff and landing handling.

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Section: Introductionmentioning

confidence: 99%

Computational numerical analysis of drag force on a standard AeroDesign wing in accordance with winglet application

et al. 2021

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Numerical study of the 3D Savonius turbine under stationary conditions

Abdullah

Ishak

Ismail

2022

Engineering Failure Analysis

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Passive flow-field control using dimples for improved aerodynamic flow over a wing

Ali,

Rasani,

Harun

et al. 2024

Sci Rep

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This study explores the efficacy of dimples in influencing the aerodynamic performance of a straight rectangular wing. Computational Fluid Dynamics based numerical simulations were performed to model turbulent flow and quantify the forces exerted on the wing. The k-ω Shear-Stress Transport turbulence model was chosen to solve the underlying equations. To ascertain reliability, the results of numerical simulations were compared with both experimental and simulation results of the previous studies. The impact of various dimple configurations, placed at 15%, 50% and 85% of the chord length, on the aerodynamic performance of the wing was investigated. The evaluation involved analyzing the drag coefficient (CD), lift coefficient (CL), lift-to-drag (L/D) ratio, streamlines and the flow field around wing in both chordwise and spanwise directions. The findings indicated that a wing with a dimpled surface could yield a reduced drag coefficient of up to 6.6% compared to the unmodified wing. This reduction is attributed to the dimples ability to sustain attached airflow and delay flow separation. The results demonstrated negligible deviation in the lift coefficient with the incorporation of dimples. The incorporation of dimples on the wing surface has been demonstrated to enhance the aerodynamic performance of lifting surfaces.

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Investigation of Aerodynamic Characteristics of a Wing Model With RGV Winglet

Cited by 6 publications

References 19 publications

Computational numerical analysis of drag force on a standard AeroDesign wing in accordance with winglet application

Computational numerical analysis of drag force on a standard AeroDesign wing in accordance with winglet application

Numerical study of the 3D Savonius turbine under stationary conditions

Passive flow-field control using dimples for improved aerodynamic flow over a wing

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