Cycle resolved multi-planar flow measurements in a four-valve combustion engine

Dannemann, J.; Pielhop, Kai; Klaas, Michael; Schröder, Wolfgang

doi:10.1007/s00348-010-0963-4

Cited by 33 publications

(7 citation statements)

References 20 publications

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“…15 for two Reynolds numbers Re = 660 and Re = 2200 based on the mean intake velocity and the intake port diameter. The formation of two strong ring vortices beneath the inlet valves is obvious, which Dannemann et al 36 likewise found to be the dominant large-scale structures in this engine operated at a relevant engine speed of 1500rpm. Since no outlet geometry is available for engine A, the setup II is not considered for this engine.…”

Section: Ivb Flow In Internal Combustion Engines -Steady Flow Casesmentioning

confidence: 57%

A Cartesian cut-cell method for sharp moving boundaries

Günther

Hartmann

Meinke

et al. 2011

20th AIAA Computational Fluid Dynamics Conference

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The extension of a three-dimensional, strictly conservative Cartesian cut-cell based method to simulate flows bounded by complex geometries with moving parts like in-cylinder flows is presented. The method handles complex geometric details of three-dimensional technical objects such as sharp edges and acute-angled features, which may lead to cells which are multiply cut by the geometry and possibly split into separate parts. Moving boundaries are represented by the zero-contour of an advected level-set function. The method is applied to compute full engine cycles. An analysis of the types of cut cells generated for several realistic engine geometries is given. Furthermore, the flow of an internal combustion engine with a moving piston and opening/closing valves is discussed.

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Section: Ivb Flow In Internal Combustion Engines -Steady Flow Casesmentioning

confidence: 57%

A Cartesian cut-cell method for sharp moving boundaries

Günther

Hartmann

Meinke

et al. 2011

20th AIAA Computational Fluid Dynamics Conference

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show abstract

“…It is known for a long time that various types of organized flows in combustion chamber of IC engines are of predominant importance for combustion particularly with regards to flame front shape and its propagation. Some results related to the isolated or synergic effect of squish and swirl on flame propagation in various combustion chamber layouts are already analyzed and published [1,2] but results concerning the isolated or combined effect of the third type of organized flow i.e. tumble are relatively less presented and sometimes ambiguous [3,4].…”

Section: Introductionmentioning

confidence: 99%

The effect of turbulence model variation on flame propagation in a particular 4-valve engine combustion chamber

Jovanović¹,

Masonicic²

2012

AIP Conference Proceedings

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In this paper some initial results concerning the evolution of flame propagation in 4-valve engines with tilted valves were presented. Results were obtained by dint of multidimensional modeling of 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 BDC. During compression the fluid flow pattern is entirely threedimensional and fully controlled by vortex motion located in the central part of the chamber. The effect of turbulence model variation on flame propagation was tackled as well. Namely, some results obtained with eddy-viscosity model i.e. standard k-ε model were compared with results obtained with k-ξ-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. In the case of combustion all differences ensuing from turbulence model variation, encountered in the case of non-reactive flow were annihilated entirely. Namely the interplay between fluid flow pattern and flame propagation is invariant as regards both turbulence models applied.

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“…Some results related to the isolated or synergic effect of squish and swirl on flame propagation in various combustion chamber layouts are already analyzed and published [1,2] but results concerning the isolated or combined effect of the third type of organized flow i. e. tumble are relatively less presented *nCorresponding author; e-mail: zoranj@vinca.rs THERMAL SCIENCE, Year 2011, Vol. Some results related to the isolated or synergic effect of squish and swirl on flame propagation in various combustion chamber layouts are already analyzed and published [1,2] but results concerning the isolated or combined effect of the third type of organized flow i. e. tumble are relatively less presented *nCorresponding author; e-mail: zoranj@vinca.rs THERMAL SCIENCE, Year 2011, Vol.…”

Section: Introductory Remarksmentioning

confidence: 99%

Some subtleties concerning fluid flow and turbulence modeling in 4.-valve engines

Jovanović¹,

Basara²,

Tomic³

et al. 2011

THERM SCI

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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 BDC. 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-ε model were compared with results obtained with k-ξ-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

show abstract

Cycle resolved multi-planar flow measurements in a four-valve combustion engine

Cited by 33 publications

References 20 publications

A Cartesian cut-cell method for sharp moving boundaries

A Cartesian cut-cell method for sharp moving boundaries

The effect of turbulence model variation on flame propagation in a particular 4-valve engine combustion chamber

Some subtleties concerning fluid flow and turbulence modeling in 4.-valve engines

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