Abstract
The results of an experimental study of the relationship between the propagation velocity of a methane-hydrogen flame and the maximum pressure in the combustion chamber of variable volume and pulsating velocity are presented. The article shows that the influence of the pulsation velocity on the flame propagation velocity depends on the phase of combustion, i.e. the larger the size of the combustion zone, the stronger the influence of the pulsation velocity and the coefficient of excess fuel. When stoichiometric mixtures are burned, an increase in the pulsation velocity leads to a more noticeable increase in the flame velocity than when burning poor and rich mixtures. It was experimentally found that, despite the change in the coefficient of excess air, the concentration of hydrogen in the fuel and the pulsating velocity, a direct linear dependence of the maximum pressure in the combustion chamber on the flame propagation rate is maintained. Processing the results of foreign scientists showed the validity of the laws we obtained for combustion chambers of various designs. The results of the work can be used in the design and development of energy-efficient and low-emission combustion chambers of variable volume.
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