This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Development And Validation of a Boundary Layer Control System to Increase Intake Port Steady Permeability
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 08, 2004 by SAE International in United States
Annotation ability available
Engine permeability, which is commonly known to exert a strong influence on engine performances, is usually experimentally addressed by means of the definition of a global parameter, the steady discharge coefficient. Nevertheless, the use of such a parameter to describe valve-port assembly behaviour appears sometimes to be insufficient to determine port fluidynamic behaviour, due to the simultaneous concurrency of complex mechanisms, such as mean flow distortions and boundary layer detachments. CFD simulation appears therefore to be a fundamental tool to fully understand port fluidynamic behaviour.
In the present paper, two engine intake port assemblies are investigated by using the STAR-CD CFD code, showing a strongly different behaviour from the point of view of secondary detached flows generation across the valve. Flow separation in the valve seat region reveals to be detrimental on engine steady breathing performances, since the subsequent recirculation region strongly limits the valve curtain usage and forces the mean flow to crash against the valve. In order to reduce the growth of secondary detached flows upstream of the valve seat, the detach-favourable port is equipped with a boundary layer control pneumatic device, which proves to be capable of nearly eliminating flow separation in the valve region. This solution is finally compared to the non-detaching design, showing a non negligible benefit in terms of discharge coefficient, and therefore engine permeability. Since the evaluation of the steady-flow discharge coefficient and flow patterns of ICE port assembly is strongly sensitive to the capability of the turbulence sub-models in capturing the boundary layer dynamics, cubic low-Reynolds k-ε model is used for simulations.
CitationFontanesi, S., "Development And Validation of a Boundary Layer Control System to Increase Intake Port Steady Permeability," SAE Technical Paper 2004-01-0111, 2004, https://doi.org/10.4271/2004-01-0111.
Modelling: Diesel Engines, Multi-Dimensional Engine, and Vehicle and Engine Systems
Number: SP-1826 ; Published: 2004-03-08
Number: SP-1826 ; Published: 2004-03-08
- Bianchi, G. M., Cantore, G., Parmeggiani, P., Michelassi, V., “On application of non-linear k-ε models for internal combustion engine flows”, in press on ASME Journal of Engineering for Gas Turbine and Power.
- Bianchi, G. M., Cantore, G., Fontanesi, S., “Turbulence modelling in CFD simulation of internal combustion engine intake flow”, ICE2001 5th International Conference, Capri (NA), 2001
- Bianchi, G. M., Cantore, G., Fontanesi, S., “Turbulence Modelling in CFD Simulations of ICE Intake Flows: The Discharge Coefficient Prediction”, SAE Paper 2002-01-1118, 2002
- Bianchi, G. M., Fontanesi, S., “On the Applications of Low-Reynolds Cubic k-ε Turbulence Models in 3D Simulations of ICE Intake Flows”, SAE Paper 2032-01-0003, 2002
- Steelant, J., “Modellering van bypass-transitie door geconditioneerede stromingsvergelijkingen”, Ph. D. Thesis, Universiteit Gent, 1995
- Hayworth, D. C., “Large-Eddy Simulation of In-Cylinder Flows”, Oil & Gas Science and Technology - Rev. IFP, Vol. 54 N. 2: pp. 175-185, 1999
- Smirnov, A., Yavuz, I., Celik, I., “Diesel combustion and LES of in-cylinder turbulence for IC-engines”, ASME Paper N. 99-ICE-247, ICE-Vol. 33-3, ICE ASME Fall Technical Conference, 1999
- Rao, S., Rutland, C. J., “Using a flamelet time-scale combustion model for LES and RANS simulations in KIVA”, 12th International Multidimensional Engine Modeling User's Group Meeting, 2002
- Gosman, A. D., Watkins, P., “A computer prediction method for turbulent flow and heat transfer in piston/cylinder assemblies”, Proceedings of a Symposium on Turbulent Shear Flows, Pennsylvania State University, 1977
- El Tahry, S. H., “K-ε equation for compressible reciprocating engine flows”, J. Energy, Vol. 7, N. 4, 1983
- Yakhot, V., Orszag, A., “Renormalization group analysis of turbulence”, J. Sci. Comput., Vol. 1, 1986
- Yakhot, V., Smith, L. M., “The Renormalization group. The ε-expansion and derivation of turbulence models”, J. Sci. Comput., Vol. 7, pp. 35-62, 1992
- Yakhot, V., Orszag, A., Thangam, S., Gatski, T. B., Speziale, C. G., “Development of Turbulence Models for Shear Flows by a Double Expansion Technique”, Phys. of Fluids A, Vol. 4, pp. 1510-1520, 1992
- Speziale, C. G., “On non-linear k-l and k-ε models of turbulence”, J. Fluid Mech., Vol. 178, 1987
- Shih, T. H., Zhu, J., Lumley, J. L., “A realizable Reynolds stress algebraic equation model”, NASA TM 105993, Lewis R. C., 1993
- Craft, T. J., Launder, B. E., Suga, K., “A non-linear eddy viscosity model including sensitivity to stress anisotropy”, in ‘Workshop on numerical methods in Fluid Mechanics’, Montreal, 1995
- Pope, S. B., “A more general effective-viscosity hypothesis”. J. Fluid Mech., Vol. 72, 1975
- Leschziner, M. A., “Turbulence modeling for complex flows - Necessay and avoidable compromises”, Proceedings of 7th Symposium on CFD, Bejing, 1997
- Pattijn, S., “Niet lineaire, laag-Reynolds, tweevergelijkingen turbulentiemodellen”, Ph. D. Thesis, Universiteit Gent, 1999
- Schlichting H., “Boundary Layer Theory”, McGraw-Hill, New York, 1960
- Sandrolini S., “Macchine: Fluidodinamica e termodinamica delle turbomacchine”, vol. 1, Pitagora, Bologna, 1996
- Tritton D.J., “Physical Fluid Dynamics”, Oxford Science Publications, Oxford, 1988
- Yoda, “PIV Studies of a Turbulent Boundary Layer with Suction”, DFD96 Meeting of The American Physical Society.
- Reid E. G., Bamber M. J., “Preliminary Investigation on Boundary Layer Control by means of Suction and Pressure with the U.S.A. 27 Airfoil”, Langley Memorial Aeronautical Laboratory.
- Rasheed Adam, “Passive Hypervelocity Boundary Layer Control Using an Ultrasonically Absorptive Surface”, California Institute of Technology, Pasadena, California, Submitted January 19, 2001.
- Gailitis, Lielausis, “On a Possibility to Reduce the Hydrodynamical Resistance of a Plate in an Electrolyte”, Report of the Physics Institute, 1961
- Weier, Gerberth, Mutschke, Platacis, Lielausis, “Experiments on Cylinder Wake Stabilization in an Electrolyte Solution by means of Electromagnetic Forces Localized on the Cylinder Surface”,. 2nd Int. Conf. On Marine Electromagnetics, Brest (France) 1999
- Weier, Gerberth, Mutschke, Lielausis, “Electromagnetic Control of Flow Separation”, 2nd Int. Conf. On Marine Electromagnetics, Brest (France) 1999
- Tsao T., Jiang F., Miller R., Tai Y. C., Gupta B., Goodman R., Tung S., Ho C. M., “An Integrated MEMS System for Turbulent Boundary Layer Control”, California Institute of Technology, Pasadena, USA, Mechanical and Aerospace Engineering Dept., University of California, Los Angeles, CA, USA.
- CD - Computational Dynamics ltd. / Analysis and Design, STAR-CD user manual, London, 1998
- CD - Computational Dynamics ltd. / Analysis and Design, Pro*AM user manual, London, 1998
- Versteeg, H. K., Malalasekera, W., “An introduction to computational fluid dynamics. The finite volume method”, Longman, 1995
- Heywood, J. B., “Internal combustion engine fundamentals”, McGraw Hill International Editions, 1988
- Galli V., “Analisi Numerico Sperimentale del Flusso nei Condotti di Aspirazione in Motori da Formula 1”, Degree Thesis, University of Modena and Reggio Emilia, 2001.
- Rosetti A., “Analisi Numerica del Flusso in Condotti di Aspirazione di Motori ad Elevate Prestazioni”, Degree Thesis, University of Bologna, 2002.
- Apparuti D., “Sviluppo di Soluzioni Innovative per l'Ottimizzazione del Flusso nei Condotti di Aspirazione di Motori ad Elevate Prestazioni: Analisi Numerica e Sperimentale”, Degree Thesis, University of Modena and Reggio Emilia, 2001.
- Carpegna, G., Ubertino, C., “Private Communication”, CRF-Italy, 2001.