Journal Paper

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Journal: تحقیقات موتور
Year:1394 | Volume:11 | Issue:39
Start Page:21 | End Page:32

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Title

DIESEL ENGINE SIMULATION USING A MULTI ZONE MODEL AND CHEMICAL KINETICS MECHANISM

Pages

 Start Page 21 | End Page 32

Abstract

 Main purpose of current study is development of a new multi zone model for direct injection DIESEL ENGINEs. Zone configuration is based on conical shape of spray. Siebers’s correlation is used for spray cone angle calculation. Experimental data are used for calculation of fuel inlet mass flow rate. Fuel diffusion in different zones is calculated using Fick’s law. A CHEMICAL KINETICS MECHANISM consisting of 76 species and 327 reactions is used for simulation of combustion chemistry. The CHEMICAL KINETICS MECHANISM contains 6 reactions for soot formation simulation and 14 reactions for NOx formation simulation. Results are in good agreement with experimental data in wide range of engine operating conditions. Maximum error of model in soot prediction is 20% and in NOx prediction is 15%.

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