Optimization of the Working Process and Gas Exchange in Diesel Internal Combustion Engines
Authors: Nikita A.Ehlakov, Boris Ya. Bendersky
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Modeling complete of gas-dynamic processes proceeding in the intake manifold of a diesel engine, using COMSOL Multiphysics modeling software package, includes all of its stages: from creating geometry, determining gas properties and describing physical phenomena, to customizing the solution and the post-processing process. The mathematical model is a model of an ideal compressible gas, described by a system consisting of four equations: the equation of state of an ideal gas, continuity, momentum and energy conservation. The working substance in the intake process is air, in this case has been the ideal gas. At t = 0 are set for the whole calculation area: temperature, pressure and velocity. As a result, were obtained graphs of changes in velocity and pressure on the surface of receivers of various geometries.