Numerical model to study the valve overlap period in the Wartsila 6L 46 four-stroke marine engine

• Autorzy: Lamas M.I. , Rodriguez C.G. , Rebollido J.M.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a CFD (Computational Fluid Dynamics) analysis was carried out to study the Wärtsilä 6L 46 medium-speed, four-stroke marine engine. For the purpose, the commercial software ANSYS Fluent 6.3 was employed. The aim is to analyze the scavenging of gases, especially during the valve overlap period. Particularly, the pressure, velocity and mass fraction fields were numerically obtained. In order to validate the CFD results, the in-cylinder pressure was successfully compared to experimental measurements for the exhaust, intake and compression strokes of the cylinder operation. This model can be used in future works to improve the performance of these engines because the information provided is very useful to identify regions in which the pressure, velocity or distribution of gases are inadequate. Besides, to compute the quantity of burnt gases which remain inside the cylinder, fresh charge which is expelled through the exhaust valves and study the influence of parameters such as the exhaust and intake pressures, engine speed, cam profile design, etc

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2012
• Tom: 19
• Numer: 1
• Opis fizyczny: p.31-37,fig.,ref.

Twórcy

autor

Lamas M.I.

• Escola Universitaria Politecnica, Universidade da Coruna, Avda.19 de Febreiro s/n - 15405 Ferrol - A Coruna, Spain

autor

Rodriguez C.G.

• Escola Universitaria Politecnica, Universidade da Coruna, Avda.19 de Febreiro s/n - 15405 Ferrol - A Coruna, Spain

autor

Rebollido J.M.

• Escola Universitaria Politecnica, Universidade da Coruna, Avda.19 de Febreiro s/n - 15405 Ferrol - A Coruna, Spain

Bibliografia

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Identyfikatory

DOI

10.2478/v10012-012-0004-8