Numerical simulations of diesel fuel sprays

• Autorzy: Diviš M. , Macek J. , Kozel K.
• Języki publikacji: EN

Abstrakty

EN

The contribution reviews our recent research activities on numerical simulations of diesel fuel spray evolution. The simulations are performed by means of an in-house mathematical model. The developed model is capable of predicting the two-phase flows constituted by the dispersed liquid phase (droplets) injected into gaseous environment. Both the multi-component compressible gas-phase flows as well as the "droplet-phase" flows are solved using governing equations written in Eulerian coordinates. The conservation of mass, momentum, and energy is balanced on finite Volumes with arbitralily movable boundaries. Thus, the model enables the computation of movable boundary problems, which facilitates the solution of in-cylinder flow with moving engine piston. The model features the two-way coupling between phases in mas s, momentum, and energy equations. The phenomena as spray induced gaseous flow, gas-to-droplet heat transfer, and fuel evaporation with consecquent vapor transport are, therefore, taken into account. The predictive capabilities of the developed model have been tested in simplified axisymmetric flow cases of diesel fuel injection process. The results of these computations are presented.

• 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: 2004
• Tom: Vol. 11, No. 1-2
• Strony: 112--119
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Diviš M.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Josef Bożek Research Center, Technicka 4, Praha 6 (CZ-16607), Czech Republic phone: [phone]

autor

Macek J.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Josef Bożek Research Center, Technicka 4, Praha 6 (CZ-16607), Czech Republic phone: [phone]

autor

Kozel K.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Josef Bożek Research Center, Technicka 4, Praha 6 (CZ-16607), Czech Republic phone: [phone]

Bibliografia

• [1] Diviš M., Macek J. and Kozel K.: „Eulerian multidimensional model for computing the fuel sprays”, in SAE Technical Paper 2004-01-0537, (USA), Society of Automotive Engineers, Inc., 2004.
• [2] Macek J. and Steiner T.; „Advanced Multizone Multidimensional Models of Engine Thermoaero-dynamics” in Proceedings of 21st CIMAC Congress Interlaken, (London), 1995.
• [3] Heywood J.: Internal Combustion Engine Fundamentals. New York: McGraw-Hill, Inc., 1988.
• [4] Bird R., Stewart W. and Lightfoot E.; Transport Phenomena. New York: John Willey & Sons, Inc., 2002.