<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper presents a 3D model of the processes taking place in the cylinder of a large 4-stroke marine engine. The model is based on CFD calculations performed on the moving mesh. The modelling range includes the full duty cycle (720° crankshaft position) and the complete geometry of the cylinder with inlet and exhaust ducts. The input data, boundary conditions and validation data were obtained by direct measurements on the real object. Fuel injection characteristics were obtained by Mie scattering measurements in a fixed-volume chamber. The modelling results have been validated in terms of the pressure characteristics of the engine’s cylinder within the entire range of its loads. The mean error did not exceed 1.42% for the maximum combustion pressure and 1.13% for the MIP (Mean Indicated Pressure). The model was also positively validated in terms of the O2 and NOx content of the exhaust gas. The mean error in this case was 1.2% for NOx fractions in the exhaust gas and 0.4% for O2 fractions. The complete model data has been made available in the research data repository on an open access basis.
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The paper presents a 3D model of the processes taking place in the cylinder of a large 4-stroke marine engine. The model is based on CFD calculations performed on the moving mesh. The modelling range includes the full duty cycle (720° crankshaft position) and the complete geometry of the cylinder with inlet and exhaust ducts. The input data, boundary conditions and validation data were obtained by direct measurements on the real object. Fuel injection characteristics were obtained by Mie scattering measurements in a fixed-volume chamber. The modelling results have been validated in terms of the pressure characteristics of the engine’s cylinder within the entire range of its loads. The mean error did not exceed 1.42% for the maximum combustion pressure and 1.13% for the MIP (Mean Indicated Pressure). The model was also positively validated in terms of the O2 and NOx content of the exhaust gas. The mean error in this case was 1.2% for NOx fractions in the exhaust gas and 0.4% for O2 fractions. The complete model data has been made available in the research data repository on an open access basis.

High Quality Multi-Zone and 3D CFD Model of Combustion in Marine Diesel Engine Cylinder

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

The paper presents a 3D model of the processes taking place in the cylinder of a large 4-stroke marine engine. The model is based on CFD calculations performed...

High Quality Multi-Zone and 3D CFD Model of Combustion in Marine Diesel Engine Cylinder

Publié en ligne: 21 juil. 2023

Pages: 61 - 67

DOI: https://doi.org/10.2478/pomr-2023-0021

Mots clés
CFD combustion model, large 4-stroke engine, diesel engine, emission, NOx concentration

© 2023 Dominika Cuper-Przybylska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

High Quality Multi-Zone and 3D CFD Model of Combustion in Marine Diesel Engine Cylinder

Publié en ligne: 21 juil. 2023

Pages: 61 - 67

DOI: https://doi.org/10.2478/pomr-2023-0021

Mots clésCFD combustion model, large 4-stroke engine, diesel engine, emission, NOx concentration

© 2023 Dominika Cuper-Przybylska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
CFD combustion model, large 4-stroke engine, diesel engine, emission, NOx concentration