Modelling of the combustion velocity in UIT-85 on sustainable alternative gas fuel

All-Russian research-to-practice conference "Ecology and safety in the technosphere"

工业技术;生态环境科学

Smolenskaya, N.M.^1 ; Korneev, N.V.^2

Togliatti State University, Belorusskaya st. 14, Togliatti

445667, Russia^1

Volga Region State University of Service, Gagarin st. 4, Togliatti

445017, Russia^2

关键词: Combustion velocities;    Empirical dependences;    Flame propagation velocity;    Flame-front propagation;    Heat release characteristic;    Natural gas combustion;    Parameters characterizing;    Propagation velocities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/66/1/012016/pdf
DOI  :  10.1088/1755-1315/66/1/012016

来源: IOP

【 摘 要 】

The flame propagation velocity is one of the determining parameters characterizing the intensity of combustion process in the cylinder of an engine with spark ignition. Strengthening of requirements for toxicity and efficiency of the ICE contributes to gradual transition to sustainable alternative fuels, which include the mixture of natural gas with hydrogen. Currently, studies of conditions and regularities of combustion of this fuel to improve efficiency of its application are carried out in many countries. Therefore, the work is devoted to modeling the average propagation velocities of natural gas flame front laced with hydrogen to 15% by weight of the fuel, and determining the possibility of assessing the heat release characteristics on the average velocities of the flame front propagation in the primary and secondary phases of combustion. Experimental studies, conducted the on single cylinder universal installation UIT-85, showed the presence of relationship of the heat release characteristics with the parameters of the flame front propagation. Based on the analysis of experimental data, the empirical dependences for determination of average velocities of flame front propagation in the first and main phases of combustion, taking into account the change in various parameters of engine operation with spark ignition, were obtained. The obtained results allow to determine the characteristics of heat dissipation and to assess the impact of addition of hydrogen to the natural gas combustion process, that is needed to identify ways of improvement of the combustion process efficiency, including when you change the throttling parameters.