STABILITY OF THERMOCAPILLARY CONVECTION
AND REGIMES OF A FLUID FLOW ACTED UPON
BY A STANDING SURFACE WAVE

A. I. Feonychev

UDC 532.5.013.4, 532.594, 536.24

It has been established that, in the case where a standing 
surface wave acts on a thermocapillary-convection flow in a cylindrical 
volume, there arises an oscillating-convection zone between the laminar 
and turbulent regimes of flow. It is shown that the boundary between 
these regimes is determined by the amplitude  
and the number of periods n of the standing wave and is practically 
independent of the Marangoni number and the oscillation frequency 
of this wave. At n = 2, in the range 0.004 <<  << 0.006, 
the parameters of the fluid cease to oscillate. The mechanisms by which 
the thermocapillary convection in closed volumes loses its stability 
are discussed.

State Scientific-Research Institute of Applied Mechanics 
and Electrodynamics, Moscow, Russia; email: afeonychev@mail.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 5, 
pp. 108-115, September-October, 2007. Original article submitted
April 19, 2006.