Effect of Freestream Vorticity Structure on Different Planform Wing Airfoil NASA SC(2)-0612

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The movement of fluid flow from the leading edge to the trailing edge is an interesting phenomenon to observe, especially on commercial aircraft wings. This condition becomes very different when the fluid flow crosses different wing planforms even though they have the same airfoil type. This study provides an alternative design for the wing planform of the Embraer ERJ 145 aircraft using the NASA SC(2)-0612 airfoil, resulting in improved aerodynamic performance. The numerical simulation uses a Reynolds number of Re = 2.88 × 10⁷, corresponding to the cruising speed conditions of the Embraer ERJ 145. Rectangular, delta, and swept-back wings were used as research configurations, particularly for the velocity magnitude, turbulent intensity, turbulent viscosity ratio, and turbulent kinetic energy components. The lateral flow from the wing root toward the wingtip, which is an effect of the wing planform, creates a vorticity structure flow pattern. The fluid flow on the rectangular wing, dominated by the mainflow from the leading edge to the trailing edge, does not significantly affect the flow properties around the wingtip. Conversely, the delta and swept-back wings significantly influence the turbulent intensity, turbulent viscosity ratio, and turbulent kinetic energy at the wingtip, which are highly influenced by the wing planform shape.

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Engineering Headway (Volume 38)

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233-251

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June 2026

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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