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THE STUDY OF MECHANISM FOR THE AMPLIFICATION OF BACKGROUND VORTICITY IN VORTEX RECONNECTION
Wang Weiguo, Shi Changchun, Chen Yaosong
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS
1998, 15 (4):
403-408.
By direct numerical simulation of Navier-Stokes equations the reconnection of two anti-parallel vortex tubes has been studied in terms of the pseudo-spectral method.The influence of different disturbances for initial vortex tubes on reconnection is observed. "Curved vortex belts" are found,and the physical mechanism for the amplification of background vorticity is also investigated.
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