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- Title
COMPRESSION STAGE NUMERICAL ANALYSIS OF A MARINE ENGINE.
- Authors
VELCEA, Dorel Dumitru
- Abstract
The departing information were rather scarce in terms of real processes taking place in the compression stage, but at the end we managed to have a full picture of the main parameters evolution during the compression inside this existing marine engine. The target of this paper was to show how, by using the reverse engineering techniques, one may replicate and simulate the functioning conditions and parameters of an existing marine engine. The air flow jet that enters the cylinder swirling via the intake valves has changing characteristics, same can be said about the exhaust jet through the exhaust valves as they open and close, and they can be ascertained, along with the turbulence creation from swirl and tumble due to compression and squish. The mail goal of an engine's design is to maximize the efficiency factors, to develop the most power from the least amount of fuel. Regarding fluid dynamics, the combustion and volumetric efficiency depend on the fluid dynamics in the engine manifolds and cylinders. Analysis in cold flow involves modeling the airflow in the transient engine cycle without reactions. The endgame is to catch the process of mixture formation by accurately accounting for the interaction of moving geometry with the fluid dynamics of the induction process.
- Subjects
COMPRESSION loads; NUMERICAL analysis; MARINE engines; AIR flow; TURBULENCE; FLUID dynamics
- Publication
Scientific Bulletin 'Mircea cel Batran' Naval Academy, 2016, Vol 19, Issue 2, p328
- ISSN
2392-8956
- Publication type
Article
- DOI
10.21279/1454-864X-16-I2-048