Numerical investigation of the deposit effect on GDI injector nozzle flow
Injector deposit is a common phenomenon for gasoline direct injection (GDI) engines that greatly affects the spray behavior and consequently the combustion performance and emissions. In this study, the deposit effect on the inner nozzle flow dynamics was numerically investigated. High resolution X-r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/49585/ |
| _version_ | 1848798030941126656 |
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| author | Wang, Bo Badawy, Tawfik Hutchins, Peter Tu, Powen Xu, Hongming Zhang, Xinyu |
| author_facet | Wang, Bo Badawy, Tawfik Hutchins, Peter Tu, Powen Xu, Hongming Zhang, Xinyu |
| author_sort | Wang, Bo |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Injector deposit is a common phenomenon for gasoline direct injection (GDI) engines that greatly affects the spray behavior and consequently the combustion performance and emissions. In this study, the deposit effect on the inner nozzle flow dynamics was numerically investigated. High resolution X-ray scan was performed first to obtain realizable information regarding to the nozzle and deposit morphologies and topology. Simulation was then carried out in the Large Eddy Simulation (LES) framework with cavitation taken into account by a homogeneous equilibrium model (HRM). It was found that the rough surface of deposit would lead to additional cavitation inception inside the counterbore and restrict the flow area, causing losses in the mass flow rate. Deposit inside the counterbore acted as an extension to the inner orifice and restricted the air recirculation, which was believed to be the cause of poor atomization of coked injector spray. |
| first_indexed | 2025-11-14T20:13:18Z |
| format | Article |
| id | nottingham-49585 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:13:18Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-495852018-02-08T10:17:54Z https://eprints.nottingham.ac.uk/49585/ Numerical investigation of the deposit effect on GDI injector nozzle flow Wang, Bo Badawy, Tawfik Hutchins, Peter Tu, Powen Xu, Hongming Zhang, Xinyu Injector deposit is a common phenomenon for gasoline direct injection (GDI) engines that greatly affects the spray behavior and consequently the combustion performance and emissions. In this study, the deposit effect on the inner nozzle flow dynamics was numerically investigated. High resolution X-ray scan was performed first to obtain realizable information regarding to the nozzle and deposit morphologies and topology. Simulation was then carried out in the Large Eddy Simulation (LES) framework with cavitation taken into account by a homogeneous equilibrium model (HRM). It was found that the rough surface of deposit would lead to additional cavitation inception inside the counterbore and restrict the flow area, causing losses in the mass flow rate. Deposit inside the counterbore acted as an extension to the inner orifice and restricted the air recirculation, which was believed to be the cause of poor atomization of coked injector spray. Elsevier 2017-05 Article PeerReviewed application/pdf en cc_by_nc_nd https://eprints.nottingham.ac.uk/49585/1/Numerical%20Investigation%20of%20the%20Deposit%20Effect%20on%20GDI%20Injector%20Nozzle%20Flow.pdf Wang, Bo, Badawy, Tawfik, Hutchins, Peter, Tu, Powen, Xu, Hongming and Zhang, Xinyu (2017) Numerical investigation of the deposit effect on GDI injector nozzle flow. Energy Procedia, 105 . pp. 1671-1676. ISSN 1876-6102 deposit; large eddy simulation; nozzle; cavitation; CFD https://www.sciencedirect.com/science/article/pii/S1876610217305908 doi:10.1016/j.egypro.2017.03.545 doi:10.1016/j.egypro.2017.03.545 |
| spellingShingle | deposit; large eddy simulation; nozzle; cavitation; CFD Wang, Bo Badawy, Tawfik Hutchins, Peter Tu, Powen Xu, Hongming Zhang, Xinyu Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title | Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title_full | Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title_fullStr | Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title_full_unstemmed | Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title_short | Numerical investigation of the deposit effect on GDI injector nozzle flow |
| title_sort | numerical investigation of the deposit effect on gdi injector nozzle flow |
| topic | deposit; large eddy simulation; nozzle; cavitation; CFD |
| url | https://eprints.nottingham.ac.uk/49585/ https://eprints.nottingham.ac.uk/49585/ https://eprints.nottingham.ac.uk/49585/ |