Abstract
A two-dimensional model of the working process—the preliminary analysis of calculations (PAC)—is developed for the preliminary planning of three-dimensional numerical calculations of the working process in spark-ignited engines. The model is based on solving the energy conservation equation in partial derivatives based on the control volume method with explicit identification of the flame front. A new approach to modeling flame propagation in a spark-ignited engine is proposed, which consists of a combination of the mesh method of control volumes and the calculation of the apparent flame velocity based on the experimental data (taking into account the stage of development of the flame source). In this case, there is no need to solve the momentum transfer equation and gas mixture components to determine the current position of the flame front. Thus, the advantages of this model are the fast execution of the calculation and good predictive ability. Additionally, the program can be used for preliminary verification of three-dimensional calculations when experimental data are not available, as well as for obtaining the heat release characteristics for zero-dimensional (thermodynamic) models of the working process.
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Sergeev, S.S. Two-Dimensional Model for Calculation of the Working Process of a Spark-Ignited Engine. Math Models Comput Simul 14, 559–566 (2022). https://doi.org/10.1134/S207004822204010X
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DOI: https://doi.org/10.1134/S207004822204010X