An understanding of vortical structures and vortex breakdown is essential for the development of highly maneuverable vehicles and high angle of attack flight. This is primarily due to the physical limits these phenomena impose on aircraft and missiles at extreme flight conditions. Demands for more maneuverable air vehicles have pushed the limits of current CFD methods in the high Reynolds number regime. Simulation methods must be able to accurately describe the unsteady, vortical flowfields associated with fighter aircraft at Reynolds numbers more representative of full-scale vehicles. It is the goal of this paper to demonstrate the ability of detached-eddy Simulation (DES), a hybrid Reynolds-averaged Navier-Stokes (RANS)/large-eddy Simulation (LES) method, to accurately predict vortex breakdown at Reynolds numbers above Detailed experiments performed at Onera are used to compare simulations utilizing both RANS and DES turbulence models.
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December 2002
Technical Papers
Detached-Eddy Simulations and Reynolds-Averaged Navier-Stokes Simulations of Delta Wing Vortical Flowfields
Scott Morton, Associate Professor,
Scott Morton, Associate Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
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James Forsythe, Associate Professor,
James Forsythe, Associate Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
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Anthony Mitchell, Assistant Professor,
Anthony Mitchell, Assistant Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
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David Hajek
David Hajek
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
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Scott Morton, Associate Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
James Forsythe, Associate Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
Anthony Mitchell, Assistant Professor
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
David Hajek
Department of Aeronautics, United States Air Force Academy USAF Academy, CO 80840-6400
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division March 20, 2002; revised manuscript received June 13, 2002. Associate Editor: F. F. Grinstein.
J. Fluids Eng. Dec 2002, 124(4): 924-932 (9 pages)
Published Online: December 4, 2002
Article history
Received:
March 20, 2002
Revised:
June 13, 2002
Online:
December 4, 2002
Citation
Morton, S., Forsythe, J., Mitchell, A., and Hajek, D. (December 4, 2002). "Detached-Eddy Simulations and Reynolds-Averaged Navier-Stokes Simulations of Delta Wing Vortical Flowfields ." ASME. J. Fluids Eng. December 2002; 124(4): 924–932. https://doi.org/10.1115/1.1517570
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