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Yang, R, Theotokatos, G and Vassalos, D (2021) CFD modelling and numerical investigation of a large marine two-stroke dual fuel direct injection engine. Ships and Offshore Structures, 17 (5). pp. 1062-1074. ISSN 1744-5302
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CFD modelling and numerical investigation of a large marine two-stroke dual fuel direct injection engine.pdf - Published Version Available under License Creative Commons Attribution. Download (4MB) | Preview |
Abstract
This study aims at developing a CFD model for large marine two-stroke dual fuel engine with gaseous fuel direct injection at high pressure. For the gaseous fuel, the shock tube theory and the pseudo-diameter concept are employed to model the injection, jet penetration and air entrainment processes, whereas its non-premixed combustion is represented by a steady diffusion flamelet model along with a pilot fuel ignition kernel. Following this model validation, a large marine two-stroke dual fuel engine closed cycle is simulated for both the gas and diesel modes at 75% load, and the involved phenomena are comparatively assessed. The derived results demonstrate that the gas mode combustion takes place in lower maximum temperature and leaner conditions compared to the diesel mode, resulting in lower NOx emissions. This study is expected to benefit the development of future engine designs and the engine settings optimisation for reducing emissions and increasing efficiency.
| Item Type: | Article |
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| Uncontrolled Keywords: | CFD modelling; Engineering; Engineering, Marine; gas and diesel operating modes; high pressure gas direct injection; marine two-stroke dual fuel engines; Science & Technology; Technology; Science & Technology; Technology; Engineering, Marine; Engineering; CFD modelling; marine two-stroke dual fuel engines; high pressure gas direct injection; gas and diesel operating modes; 0911 Maritime Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | Engineering |
| Publisher: | Taylor and Francis Group |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 14 Dec 2022 11:25 |
| Last Modified: | 14 Dec 2022 11:25 |
| DOI or ID number: | 10.1080/17445302.2021.1893533 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/18395 |
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