CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine
The combustion process in the diesel engine should be controlled to avoid both excessive maximum cylinder pressure and an excessive rate of pressure rise, in terms of crank angle. At the same time, the process should be so rapid that substantially all the fuel is burned early in the expansion stroke...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2016-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=39810&issue_ID=228 |
| _version_ | 1828271468325109760 |
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| author | S. K. Gugulothu K. H. C. Reddy |
| author_facet | S. K. Gugulothu K. H. C. Reddy |
| author_sort | S. K. Gugulothu |
| collection | DOAJ |
| description | The combustion process in the diesel engine should be controlled to avoid both excessive maximum cylinder pressure and an excessive rate of pressure rise, in terms of crank angle. At the same time, the process should be so rapid that substantially all the fuel is burned early in the expansion stroke. In this direction, piston configuration plays a crucial role. Four configurations i.e., flat, inclined, central bowl, and inclined offset bowl piston have been studied. This study is concerned with the CFD analysis has been carried out on two valve four stroke diesel engine to analyze the in-cylinder air motion during suction stroke, pressure and temperature variation inside the cylinder during the compression stroke for various configurations. The engine specifications are considered from the literature. For numerical analysis, Ansys15 CFD software has been used, for meshing polyhedral trimmed cells were adopted. In-cylinder flows were analyzed by solving mass, momentum and energy equation. From this study, it is concluded that analysis has been carried out for each crank angle degree during suction and compression stroke for all the piston configurations, tumble ratio varies mainly with crank angle position. At the end of the compression stroke fuel is injected and the performance of different piston bowls are analyzed. |
| first_indexed | 2024-04-13T05:53:43Z |
| format | Article |
| id | doaj.art-1167da3d850f481db2fcf57222a48580 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-04-13T05:53:43Z |
| publishDate | 2016-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-1167da3d850f481db2fcf57222a485802022-12-22T02:59:41ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722016-01-019311471155.CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel EngineS. K. Gugulothu0K. H. C. Reddy1MLRITjntu anantapurThe combustion process in the diesel engine should be controlled to avoid both excessive maximum cylinder pressure and an excessive rate of pressure rise, in terms of crank angle. At the same time, the process should be so rapid that substantially all the fuel is burned early in the expansion stroke. In this direction, piston configuration plays a crucial role. Four configurations i.e., flat, inclined, central bowl, and inclined offset bowl piston have been studied. This study is concerned with the CFD analysis has been carried out on two valve four stroke diesel engine to analyze the in-cylinder air motion during suction stroke, pressure and temperature variation inside the cylinder during the compression stroke for various configurations. The engine specifications are considered from the literature. For numerical analysis, Ansys15 CFD software has been used, for meshing polyhedral trimmed cells were adopted. In-cylinder flows were analyzed by solving mass, momentum and energy equation. From this study, it is concluded that analysis has been carried out for each crank angle degree during suction and compression stroke for all the piston configurations, tumble ratio varies mainly with crank angle position. At the end of the compression stroke fuel is injected and the performance of different piston bowls are analyzed.http://jafmonline.net/JournalArchive/download?file_ID=39810&issue_ID=228DI Diesel engine; Combustion; Piston bowl configuration; In-cylinder air motion; NOx formation. |
| spellingShingle | S. K. Gugulothu K. H. C. Reddy CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine Journal of Applied Fluid Mechanics DI Diesel engine; Combustion; Piston bowl configuration; In-cylinder air motion; NOx formation. |
| title | CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine |
| title_full | CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine |
| title_fullStr | CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine |
| title_full_unstemmed | CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine |
| title_short | CFD Simulation of In-Cylinder Flow on Different Piston Bowl Geometries in a DI Diesel Engine |
| title_sort | cfd simulation of in cylinder flow on different piston bowl geometries in a di diesel engine |
| topic | DI Diesel engine; Combustion; Piston bowl configuration; In-cylinder air motion; NOx formation. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=39810&issue_ID=228 |
| work_keys_str_mv | AT skgugulothu cfdsimulationofincylinderflowondifferentpistonbowlgeometriesinadidieselengine AT khcreddy cfdsimulationofincylinderflowondifferentpistonbowlgeometriesinadidieselengine |