Initiation of Combustion in a Pseudo-Jump by Gas Dynamic Pulses when Supplying Hydrogen from the Wall
V. N. Zudov1, A. V. Tupikin2, V. M. Abashev3
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3Moscow Aviation Institute (National Research University), Moscow, Russia
Keywords: supersonic flow, wave structures, combustion in pseudo-shock, pressure distribution
Abstract
The results of an experimental study of initiation of hydrogen combustion in a supersonic flow with fuel supply from the channel wall are presented. Data are obtained on the dynamics of disturbance development from gas-dynamic pulses and on the transition to the combustion mode in a pseudo-shock, when fuel is supplied from the combustion chamber walls rather than along the flow axis. Features of pre-detonation combustion initiation for such a scheme of hydrogen supply to a supersonic flow are revealed. It is shown that the steady-state modes of pre-detonation combustion slightly differ depending on the fuel supply method (along the axis or from the flow periphery), while the dynamics of wave structure propagation from gas-dynamic pulses is almost identical in both cases.
|
