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Unsteady emptying of a pressure vessel

El-Naggar B. B., Kholeif I. A.

Mechanics and Mechanical Engineering

2004

Vol. 7, nr 2

121-125

In this paper the problem of the unsteady emptying of a pressure vessel is solved by integrating the equations representing conservation of mass and energy in adiabatic expansion numerically for air where the adiabatic index γ = 1.4, two unknown functions are determined namely; the pressure and temperature inside the bottle. The ambient pressure and temperature are assumed constants and are used for non-dimensionalization. The area of the orifice is considered a constant throughout the whole expansion.