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Numerical analysis on two-dimensional vortex merger
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 Title & Authors
Numerical analysis on two-dimensional vortex merger
Park, Sanghyun; Sheen, DongJin; Chang, Kyoungsik; Kwag, DongGi;
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During flight of the aircraft, the vortex merging phenomenon appears under the certain condition between co-rotating vortices which were generated at the wing tip and lifting-surface. And then these merged vortices at both sides show counter-rotating pattern to affect on the downstream of the aircraft. In this paper, the numerical simulations are conducted assuming this phenomenon in two-dimensional co-rotating or counter-rotating vortices pairs. Two-dimensional incompressible Navier-Stokes equations were converted into Vorticity-Streamfunction form and the Galerkin spectral method was adopted. The third order Runge-Kutta method was used for time integration. The effects on the vortex merger and degree of vortex merger were investigated according to time, Reynolds number, and changes in the distance between two vortices.
Vortex merger;Vorticity-Streamfunction;Galerkin spectral method;
 Cited by
P. Orlandi, "Vortex dipole rebound form a wall," Phys. Fluids A 3, 1429, 1990

박영민, 강형민, 정덕진, 이해창, "2차원 고양력장치의 플랩형상 및 위치 최적화," 항공우주시스템공학회지 제 7권 제 3호, 2013

P. Orlandi, "Two-dimensional and three-dimensional direct numerical simulation of co-rotating vortices," Physics of Fluids, Vol. 19, NO. 1, pp. 1-18, 2007

Maziar Hemati, "Vortex Merger: A Numerical Investigation," UNIVERSITY OF CALIFORNIA-LOS ANGELES, 2009

Ch. Josserand, M. Rossi, "The merging of two co-rotating vortices : a numerical study," European Journal of Mechanics B/Fluids, 25, pp. 779-794, 2007

Patrice Meunier, Stephane Le Dizes, Thomas Leweke, "Physics of vortex merging," C.R. Physique, 6, pp. 431-450, 2005 crossref(new window)

Lloyd N. Trefethe, "Spectral Methods in Matlab," SIMA, Philadelphia, pp. 9-28, 2000

R.Peyret, "Spectral Methods for Incompressible Viscous Flow," Springer -Verlag, 2002

KEIKO K. NOMURA, HIDEAKI TSUTSUI, DANIEL MAHONEY, JAMES W. ROTTMAN, "Short-wavelength instability and decay of a vortex pair in a stratified fluid," J. Fluid Mech. (2006), vol. 553, pp. 283-322, 2006 crossref(new window)