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Thermophysics and Aeromechanics

2025 year, number 6

Numerical simulation of ignition of a hydrogen-air mixture in a flow

V.N. Zudov, O.A. Shmagunov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: numerical simulation, combustion in subsonic and supersonic jets, optical discharge, pulse-periodic initiation of ignition

Abstract

The problem of ignition and combustion of a region expanding over time is considered. Combustion was initiated using a pulsed-periodic energy source. The influence of pulse frequency and flow velocity on ignition was revealed. Autoignition of a laminar hydrogen jet diluted with nitrogen in a co-current heated air flow was numerically simulated. A transient reacting mixing layer between two flows (air and fuel) with different velocities and temperatures was studied.