DYNAMICS OF THE VISCOUS INTERACTION
OF A RING VORTEX WITH A FLAT SCREEN

N. A. Vladimirova

UDC 532.526.2, 532.626.4, 532.526.5, 519.6

A separation turbulent flow has been mathematically simulated 
on the basis of numerical solution of nonstationary Navier-Stokes 
equations for determining the dynamics of viscous interaction of a 
ring vortex with a flat screen. The problem was solved for an axisymmetric 
turbulent flow at Reynolds numbers falling within the range 105 - 107. 
On the basis of the calculation data obtained, the interaction of 
a ring vortex with a turbulent flow induced on the screen and with 
the secondary ring vortices was investigated. The data obtained are 
in qualitative agreement with the analogous data obtained by other 
authors with the use of the discrete-vortex method and the boundary
-layer theory as well as with the available experimental and calcu-
lation data obtained for a laminar flow.

N. E. Zhukovskii Central Aerohydrodynamics Institute, 1 Zhukovskii 
Str., Zhukovskii, Moscow Obl., 140180, Russia; email: vlana@progtech.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 1, pp. 
184-190, January-February, 2008. Original article submitted 
April 13, 2007.