THE PROCESS OF DRYING OF A CAPILLARY SPECIMEN SUBJECTED 
TO AN ACOUSTIC-CONVECTIVE EFFECT

Yu. G. Korobeinikov, A. P. Petrov,
G. V. Trubachev, and A. V. Fedorov

UDC 532.72; 669.015.23

The process of drying of a model capillary specimen located 
in an intense acoustic field under the conditions of convective blowing 
is investigated. Video recording has registered a drop mechanism of 
water extraction from the capillaries of the specimen. It is shown 
that the driving force of this process is the difference between the 
acoustic pressure in the external flow and inside the cavity of the 
specimen. Measurements have demonstrated a certain increase in the 
temperature inside a capillary exposed to an acoustic field. The influence 
of the position of capillaries relative to the sonic wave front and 
of the flow velocity is investigated. It is shown that in the capillaries 
positioned horizontally the temperature in them is much lower than 
in those positioned vertically. Kinetic curves of drying of the specimen 
are obtained.

Institute of Theoretical and Applied Mechanics, Siberian 
Branch of the Russian Academy of Sciences, 4/1 Institutskaya Str., 
Novosibirsk, 630090, Russia. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 80, No. 2, pp. 166-172, March-April, 2007. Original 
article submitted July 26, 2005; revision submitted March 9, 2006.