A gas dynamics of a resonance tube

Аuthors

Kessaev K. V.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

Abstract

A physical nature is studied for origin of periodic oscillation in cylindrical cavity caused with inflow of under expanded gas in the cavity. The tube of this kind is named usually as a resonance tube. Research fulfilled was inspired with a problem of multiple ignitions for liquid propellant rocket engines. It is demonstrated experimentally that periodic oscillations have a surging nature and are followed with the peak heat emission. A gas dynamical model is derived for shock-wave oscillations based on experimental data. This model allows to discover conditions of maximal compression and heat emission in the resonance tube. The results obtained open up possibilities to design effective devices for gas-dynamical heating and ignition of a blended fuel within the resonance tube.