TY  - JOUR
AU  - Jovanović, Zoran S.
AU  - Basara, Branislav S.
AU  - Tomić, Miroljub V.
AU  - Petrovic, Velimir S.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4633
AB  - In this paper some results concerning the structure and evolution of fluid flow pattern during induction and compression in 4- valve engines with tilted valves were presented. Results were obtained by dint of multidimensional modeling of non-reactive flows in arbitrary geometry with moving boundaries. During induction fluid flow pattern was characterized with organized tumble motion followed by small but clearly legible deterioration in the vicinity of the bottom dead center. During compression the fluid flow pattern is entirely three-dimensional and fully controlled by vortex motion located in the central part of the chamber. In order to annihilate negative effects of tumble deterioration and to enhance swirling motion one of the intake valves was deactivated. Some positive and negative effects of such attempt were elucidated. The effect of turbulence model alteration in the case of excessive macro flows was tackled as well. Namely, some results obtained with eddy-viscosity model i. e. standard k-epsilon model were compared with results obtained with k-xi-f model of turbulence in domain of 4-valve engine in-cylinder flow. Some interesting results emerged rendering impetus for further quest in the near future.
T2  - Thermal Science
T1  - Some Subtleties Concerning Fluid Flow and Turbulence Modeling in 4-Valve Engines
VL  - 15
IS  - 4
SP  - 1065
EP  - 1079
DO  - 10.2298/TSCI110825104J
ER  - 

@article{
author = "Jovanović, Zoran S. and Basara, Branislav S. and Tomić, Miroljub V. and Petrovic, Velimir S.",
year = "2011",
abstract = "In this paper some results concerning the structure and evolution of fluid flow pattern during induction and compression in 4- valve engines with tilted valves were presented. Results were obtained by dint of multidimensional modeling of non-reactive flows in arbitrary geometry with moving boundaries. During induction fluid flow pattern was characterized with organized tumble motion followed by small but clearly legible deterioration in the vicinity of the bottom dead center. During compression the fluid flow pattern is entirely three-dimensional and fully controlled by vortex motion located in the central part of the chamber. In order to annihilate negative effects of tumble deterioration and to enhance swirling motion one of the intake valves was deactivated. Some positive and negative effects of such attempt were elucidated. The effect of turbulence model alteration in the case of excessive macro flows was tackled as well. Namely, some results obtained with eddy-viscosity model i. e. standard k-epsilon model were compared with results obtained with k-xi-f model of turbulence in domain of 4-valve engine in-cylinder flow. Some interesting results emerged rendering impetus for further quest in the near future.",
journal = "Thermal Science",
title = "Some Subtleties Concerning Fluid Flow and Turbulence Modeling in 4-Valve Engines",
volume = "15",
number = "4",
pages = "1065-1079",
doi = "10.2298/TSCI110825104J"
}

Jovanović, Z. S., Basara, B. S., Tomić, M. V.,& Petrovic, V. S.. (2011). Some Subtleties Concerning Fluid Flow and Turbulence Modeling in 4-Valve Engines. in Thermal Science, 15(4), 1065-1079.
https://doi.org/10.2298/TSCI110825104J

Jovanović ZS, Basara BS, Tomić MV, Petrovic VS. Some Subtleties Concerning Fluid Flow and Turbulence Modeling in 4-Valve Engines. in Thermal Science. 2011;15(4):1065-1079.
doi:10.2298/TSCI110825104J .

Jovanović, Zoran S., Basara, Branislav S., Tomić, Miroljub V., Petrovic, Velimir S., "Some Subtleties Concerning Fluid Flow and Turbulence Modeling in 4-Valve Engines" in Thermal Science, 15, no. 4 (2011):1065-1079,
https://doi.org/10.2298/TSCI110825104J . .