Izvorni znanstveni članak
https://doi.org/18048/2020.00.27.
Development and Validation of 4 Stroke Marine Diesel Engine Numerical Model
Vladimir Pelić
orcid.org/0000-0003-0378-9572
; University of Rijeka, Faculty of Maritime Studies
Tomislav Mrakovčić
orcid.org/0000-0003-1179-2771
; University of Rijeka, Faculty of Engineering
Ozren Bukovac
orcid.org/0000-0002-4388-0234
; University of Rijeka, Faculty of Engineering
Marko Valčić
; University of Rijeka, Faculty of Engineering
Sažetak
Increasing demands on energy efficiency and environmental acceptance are being imposed on marine propulsion plants. The fulfilment of the conditions set by the MARPOL Convention, Annex VI, regarding the emissions from exhaust gases of marine diesel engines is of particular interest. This paper presents the development and validation of a zero-dimensional, single-zone diesel engine numerical model. Presented numerical model is based on the law of conservation of energy and mass and solving the resulting differential equations. The single-zone model will serve as the basis for a model where the cylinder space is divided into two or three zones during combustion. In this way, the multi-zone model will allow the modelling of nitrogen oxide emissions with satisfactory accuracy. Validation of the diesel engine model was carried out for the Wärtsilä 12V50DF 11700 kW motor designed to drive a synchronous alternator. Obtained results and deviations of certain parameters in the operation of the engine with respect to the data obtained from the measurements on the test bed, are more than satisfactory regarding complexity of the numerical model. This confirmed the usability of the model for research purposes to optimize the marine diesel engine.
Ključne riječi
diesel engine; numerical modelling; zero-dimensional model
Hrčak ID:
239024
URI
Datum izdavanja:
8.6.2020.
Posjeta: 1.224 *