MATHEMATICAL SIMULATION OF THE FORMATION
OF HEAT TORNADOES

A. M. Grishin, O. V. Matvienko,
and Yu. A. Rudi

UDC 621.1

A numerical simulation of convective swirling jets arising 
as a result of the rotation of a heated disk in an initially immovable 
medium has been carried out. It is shown that in the case where a 
jet is swirled moderately, the flow is relaminarized and the intensity 
of the heat and mass transfer in the convective jet decreases, which 
leads to an increase in the buoyancy force and, consequently, an increase 
in the velocity of the flow. The air mass in the form of a cylindrical 
column-shaped vortex rises above the disk to a large height and, in 
doing so, retains its individuality.

Tomsk State University, 36 Lenin Ave., Tomsk, 634050, Russia; 
email: fire@mail.tsu.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 81, No. 5, pp. 860-867, September-October, 2008. 
Original article submitted September 26, 2007.