EFFECT OF THE COMPRESSIBILITY OF THE FLUID 
ON THE PARAMETERS OF A HYDRAULIC GUN
A. N. Semko

UDC 532.5:518.5

The effect of the compressibility of the fluid on the parameters 
of a hydraulic gun is evaluated. The quasi-one-dimensional 
motion of an ideal compressible fluid is described by equations of 
nonstationary gas dynamics, which are solved numerically according 
to the algorithm proposed. The numerical solution for a compressible 
fluid is compared with an analytical solution for an incompressible 
fluid and with an experiment, which are performed by other authors. 
From an analysis of the results conclusions are drawn that the compressibility 
of the fluid can be disregarded. It is proposed that the Mach number 
be used as a criterion for assessing account for the compressibility 
of the fluid.

Donetsk State University, Donetsk, Ukraine; email: stupin@dongu.donetsk.ua. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 74, No. 1, pp. 
27-31, January-February, 2001. Original article submitted 
November 16, 1999; revision submitted August 1, 2000.

JEPTER74920200117
JEPTER7492017