The model of the air inlet duct flow of the marine 4-stroke diesel engine

• Autorzy: Kowalski J.
• Języki publikacji: EN

Abstrakty

EN

The manuscript presents the model of the air flow through the air inlet duct of the marine 4-stroke engine. Presented model are computational fluid dynamic modelbased on dimensions and the construction of the real air intake duct. The measurement parameters from real object are used to the model validation. Mentioned measurements of the air flow are conducted by Venturi orifice for different loads of the engine and the different flow characteristics of the air intake duct. The results from computational fluid dynamic model are useful to calibration the orifice by setting the orifice module. The orifice module changes up to 6% of the mean values for all considered loads of the engine and throttling’s of the air intake duct. The approximation the flow characteristic for other throttling’s of the air intake duct was conducted also. The obtained approximation is useful tool to calculate the air flow to the engine for the different throttling’s than measured. Linear dependence between the air mass flow and the power of the engine at the constant engine speed was observed. The throttling of the cross section area of the air intake duct causes changing the characteristic in accordance to a second order polynomial. The maximum error of obtained approximation compared to measured values not excided 4% and mean error for all measured loads and throttling’s not exceeded 0.12%.

Słowa kluczowe

EN

marine diesel engine; Venturi orifice; air flow; CFD model; air duct throttling

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 2
• Strony: 193--200
• Opis fizyczny: Bibliogr. 15 poz., rys.

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] Ghassemi, H., Fasih, H. F., Application of Small size Cavitating Venturi as Flow Controller and Flow Meter, Flow Measurement and Instrumentation, Vol. 22, pp. 406-412, 2011.
• [2] Hanjalic, K., Popovac, M., Hadziabdic, M., A Robust Near-Wall Elliptic-Relaxation Eddy- Viscosity Turbulence Model for CFD, International Journal of Heat Fluid Flow, Vol. 25, pp. 1047-1051, 2004.
• [3] Hasan, A. H. A. M, Lucas, G. P., Experimental and Theoretical Study of the Gas – Water Two Phase Flow Through a Conductance Multiphase Venturi Meter in Vertical Annular (Wet Gas) Flow, Nuclear Engineering and Design, Vol. 241, pp. 1998-2005, 2011.
• [4] He, D., Bai, B., Numerical Investigation of Wet Gas Flow in Venturi Meter, Flow Measurement and Instrumentation, Vol. 28, pp. 1-6, 2012.
• [5] ISO 5167 – Measurement of fluid flow.
• [6] Jitschin, W., Ronzheimer, M., Khodabakhshi, S., Gas Flow Measurement by Means of Orifices’ and Venturi Tubes, Vacuum, Vol. 53, pp. 181-185, 1999.
• [7] Kowalski, J., Laboratory Study on Influence of Air Duct Throttling on Exhaust Gas Composition in Marine Four-Stroke Diesel Engine, Journal of KONES Powertrain and Transport, Vol. 19. No. 1, pp. 191-198, 2012.
• [8] Popovac, M., Hanjalic, K., Compound Wall Treatment for RANS Computation of Complex Turbulent Flows and Heat Transfer, Flow Turbulence and Combustion, Vol. 78, pp. 177-202, 2007.
• [9] Powell, M. J. D., Approximation Theory and Methods, Cambridge University Press, 1981.
• [10] Revised Marpol Annex VI. Regulations for the Prevention of Air Pollution from Ships. Resolution MEPC.176(58), International Maritime Organization, 2008.
• [11] Silva, A. M., Teixeira, J. C. F., Teixeira, S. F. C. F., Experiments in a Large-Scale Venturi Scrubber, Part I: Pressure Drop, Chemical Engineering and Processing, Vol. 48, pp. 59-67, 2009.
• [12] Silva, A. M., Teixeira, J. C. F., Teixeira, S. F. C. F., Experiments in a Large-Scale Venturi Scrubber, Part II: Droplet Size, Chemical Engineering and Processing, Vol. 48, pp. 424-431, 2009.
• [13] Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines. Resolution MEPC.177(58), International Maritime Organization, 2008.
• [14] Yanagihara, S., Mochizuki, O., Sato, K., Saito, K., Variable Area Venturi-Type Exhaust Gas Flow Meter, JSAE Review, Vol. 20, pp. 259-279, 1999.
• [15] Zienkiewicz, O. C., Taylor, R. L., The Finite Element Method, Vol. 3 Fluid Dynamics, Butterworth-Heinemann, Oxford 2005.