NUMERICAL INVESTIGATION OF THE LAMINAR
SHOCK-WAVE GAS FLOW EXCITED BY HARMONIC
VIBRATIONS OF THE PISTON IN A CLOSED
CYLINDRICAL TUBE

S. V. Bulovich

UDC 534.222

The shock-wave gas flow in a closed cylindrical tube caused 
by harmonic vibrations of a flat piston has been considered. The solution 
has been obtained by means of numerical integration of the system 
of nonstationary equations of a narrow channel written in divergent 
form. A scheme of the 1st order of time accuracy and a scheme of the 
2nd order of space accuracy have been used. The regularities in the 
behavior of the dynamic and temperature boundary layers for the unstable 
regime of gas flow in the tube at various moments of the cycle have 
been analyzed.

St. Petersburg State Technical University, 29 Politekhnicheskaya 
Str., St. Petersburg, 195251, Russia; email: bulovich@ista-pneumatics.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 2, pp. 
139-144, March-April, 2006. Original article submitted October 
29, 2004; revision submitted March 12, 2005.