Assessment of the 3-D combustion model in the marine 4-stroke engine

• Autorzy: Kowalski J.
• Języki publikacji: EN

Abstrakty

EN

The aim of this research is to formation of the model of combustion process in the marine, 4 -stroke, diesel engine. The chosen object of research is a laboratory AL25/30 engine. For achievement of the aim, laboratory measurements are made and the results are used to determine the boundary and initial conditions. In addition, measurements of the fuel injection shape are made on the test bench and are made a faithful geometric model of structural components of the engine cylinder. The obtained data has been implemented in the three - dimensional model comprising the fuel injection phenomena, the brake - up and the evaporation of fuel, auto - ignition, flame propagation and heat exchange with the structural elements of the engine cylinder. As a result of activities succeeded in creating a model of the combustion process in the cylinder, which has been positively validated due to the maximum combustion pressure and the temperature of the exhaust gases. Obtained results of calculations also allowed verifying the assumption of negligible auto-ignition delay. The adopted ECFM - 3Z model of the ignition and combustion, used for modeling of combustion in diesel engines, showed the calculated size of the auto - ignition delay of 7 - 8 ° CA.

Słowa kluczowe

EN

marine engine; multidimensional model; Dukowicz evaporation model; TAB brake-up model; ECFM-3Z

PL

silniki morskie; model wielowymiarowy; model parowania Dukowicza; TAB -up modelu hamulca; ECFM-3Z

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2014
• Tom: Vol. 9, no 1
• Strony: 79--86
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Kowalski J.

• Gdynia Maritime University Department of Engineering Sciences Morska Street 81-87, 81-225 Gdynia,Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Kuo K. K., Principles of combustion, Willey & Sons Inc., New Jersey 2005.
• [2] Gunther H. , Diagnozowanie silników wysokoprężnych, WKŁ, Warszawa 2010.
• [3] R. Pawletko, S. Polanowski, Influence of gas channels of medium speed marine engines on the accuracy of determination of diagnostic parameters based on the indicator diagrams, Journal of Polish CIMAC Vol. 7, No.2 pp.139-146, 2012.
• [4] Drake M.C., Haworth D.C., Advanced gasoline engine development using optical diagnostics and numerical modeling , Proceedings of the Combustion Institute Vol. 31, pp. 99-124,Elsevier 2007.
• [5] Winklhofer E., Hopfner W., Optical single cylinder engines in engine research and development, Combustion Engines Vol. 1 (152), pp. 71 -78, Warszawa 2013.
• [6] Poinsot T. , Veynante D. ,Theoretical and numerical combustion, Edwards 2005.
• [7] Kapusta Ł.J., Teodorczyk A., Numerical simulations of a simultaneous direct injection of liquid and gaseous fuels into a constant volume chamber, Journal of Power Technologies, Vol. 92 (1), pp. 12 – 19, 2012.
• [8] Zienkiewicz O. C., Taylor R. L., Finite Element Method, Vol. 3 - Fluid Dynamics, Fifth Edition, Butterworth - Heinemann, Oxford 2000.
• [9] Jaworski P., Kowalski J., 3Dmesh model for RANS numerical research on marine 4 - stroke engine , Journal of Polish CIMAC Vol. 9, 2014. (in press)
• [10] Heywood J. B., Internal Combustion Engine Fundamentals , McGraw -Hill 1988.
• [11] O’Rourke P.J. Amsden A.A., The Tab Method for Numerical Calculation of Spray Droplet Break -up, SAE Paper Technical 872089, SAE International 1987.
• [12] Dukowicz, J.K., Quasi-steady droplet change in the presence of convection, Informal report Los Alamos Scientific Laboratory, LA7997-MS, Los Alamos 1979.
• [13] Colin O., Benkenida A., The 3-Zones Extended Coherent Flame Model (ECFM3Z) for Computing Premixed/Diffusion Combustion, Oil & Gas Science and Technology -Rev., Vol. 59, No. 6, pp. 593-609 IFP 2004.
• [14] Priesching P., Ramusch G., Ruetz J., Tatschl R., 3D-CFD Modeling of Conventional and Alternative Diesel Combustion and Pollutant Formation –A Validation Study, SAE Paper 2007-01-1907, 2007.
• [15] JaworskiP., Priesching P., Teodorczyk A., Bandel W., Tatschl R.,Experimental studies and numerical simulation of SI and CAI combustion models for bioethanol-gasoline blends in single cylinder engine, Scientific Bulletin, Automotive Series, No. 21 (2), pp. 129-136, 2011.
• [16] Kowalski J., Laboratory study on influence of the exhaust duct throttling on exhaust gas composition in marine four -stroke diesel engine, Journal of Polish CIMAC Vol. 7, No 1. pp.109-115, Gdańsk 2012.