The effect of combustion chamber geometry layout on combustion and emission
Abstract
In this paper some results concerning the combined effect of the fumble flow and combustion chamber geometry layout variations on flame front shape and its propagation through homogenous mixture of isooctane and air are presented Spatial distributions of NO in different combustion chamber geometries are presented as well. The basic combustion chamber geometry layout considered consists of the flat head with two vertical valves and a cylindrical bowl subjected to variations of depth and squish area. All results presented were obtained by dint of multidimensional modeling of reactive flows in arbitrary geometry with moving objects and boundaries with modified KIVA3 and KIVA3 V source codes. Two additional computer codes were applied to generate boundary conditions for KIVA3 V calculations with moving valves. The AVL TYCON code was used for the calculation of valve lift profiles, and A VL BOOST code was used for the calculation of relevant data set in the valve regions. Different combusti...on chamber geometry layouts generate different levels of squish, and the combustion effects in essence depend on the interaction of that flow with tumble. It was found that for particular combustion chamber shapes with different diameter/depth aspect ratios entirely different flame front shapes and propagation velocities were encountered primarily due to variations of fluid flow patterns in the vicinity of top dead center.
Keywords:
combustion / 3-D fluid flow / flame propagationSource:
Thermal Science, 2008, 12, 1, 7-24
DOI: 10.2298/TSCI0801007J
ISSN: 0354-9836
WoS: 000255269800001
Scopus: 2-s2.0-44849085701
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Institution/Community
VinčaTY - JOUR AU - Jovanović, Zoran S. AU - Petrović, Stojan V. AU - Tomić, Miroljub V. PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3428 AB - In this paper some results concerning the combined effect of the fumble flow and combustion chamber geometry layout variations on flame front shape and its propagation through homogenous mixture of isooctane and air are presented Spatial distributions of NO in different combustion chamber geometries are presented as well. The basic combustion chamber geometry layout considered consists of the flat head with two vertical valves and a cylindrical bowl subjected to variations of depth and squish area. All results presented were obtained by dint of multidimensional modeling of reactive flows in arbitrary geometry with moving objects and boundaries with modified KIVA3 and KIVA3 V source codes. Two additional computer codes were applied to generate boundary conditions for KIVA3 V calculations with moving valves. The AVL TYCON code was used for the calculation of valve lift profiles, and A VL BOOST code was used for the calculation of relevant data set in the valve regions. Different combustion chamber geometry layouts generate different levels of squish, and the combustion effects in essence depend on the interaction of that flow with tumble. It was found that for particular combustion chamber shapes with different diameter/depth aspect ratios entirely different flame front shapes and propagation velocities were encountered primarily due to variations of fluid flow patterns in the vicinity of top dead center. T2 - Thermal Science T1 - The effect of combustion chamber geometry layout on combustion and emission VL - 12 IS - 1 SP - 7 EP - 24 DO - 10.2298/TSCI0801007J ER -
@article{ author = "Jovanović, Zoran S. and Petrović, Stojan V. and Tomić, Miroljub V.", year = "2008", abstract = "In this paper some results concerning the combined effect of the fumble flow and combustion chamber geometry layout variations on flame front shape and its propagation through homogenous mixture of isooctane and air are presented Spatial distributions of NO in different combustion chamber geometries are presented as well. The basic combustion chamber geometry layout considered consists of the flat head with two vertical valves and a cylindrical bowl subjected to variations of depth and squish area. All results presented were obtained by dint of multidimensional modeling of reactive flows in arbitrary geometry with moving objects and boundaries with modified KIVA3 and KIVA3 V source codes. Two additional computer codes were applied to generate boundary conditions for KIVA3 V calculations with moving valves. The AVL TYCON code was used for the calculation of valve lift profiles, and A VL BOOST code was used for the calculation of relevant data set in the valve regions. Different combustion chamber geometry layouts generate different levels of squish, and the combustion effects in essence depend on the interaction of that flow with tumble. It was found that for particular combustion chamber shapes with different diameter/depth aspect ratios entirely different flame front shapes and propagation velocities were encountered primarily due to variations of fluid flow patterns in the vicinity of top dead center.", journal = "Thermal Science", title = "The effect of combustion chamber geometry layout on combustion and emission", volume = "12", number = "1", pages = "7-24", doi = "10.2298/TSCI0801007J" }
Jovanović, Z. S., Petrović, S. V.,& Tomić, M. V.. (2008). The effect of combustion chamber geometry layout on combustion and emission. in Thermal Science, 12(1), 7-24. https://doi.org/10.2298/TSCI0801007J
Jovanović ZS, Petrović SV, Tomić MV. The effect of combustion chamber geometry layout on combustion and emission. in Thermal Science. 2008;12(1):7-24. doi:10.2298/TSCI0801007J .
Jovanović, Zoran S., Petrović, Stojan V., Tomić, Miroljub V., "The effect of combustion chamber geometry layout on combustion and emission" in Thermal Science, 12, no. 1 (2008):7-24, https://doi.org/10.2298/TSCI0801007J . .