Study of the unsteady gas outflow from a container
T.A. Gimon, V.I. Zvegintsev, N.N. Fedorova
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: gas outflow, quasi-stationary state, non-adiabaticity, heat flow, experimental study
Abstract
An experimental study of the process of air outflow from a container with a characteristic duration of 0.6 to 9 s through throttling tubes of various configurations was carried out. The equivalent area of the outlet orifice is determined depending on the ratio of the length of the throttling tube to its nominal diameter. It was found that during the outflow process, the temperature of the gas inside the container decreases by 10-15%, which value differs significantly from the theoretical estimate made under the assumption that the process is adiabatic (60 %). Based on the results of measuring the pressure and temperature of the gas in the container, a method is proposed for calculating the heat flow from the walls of the container to the outflowing gas.
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