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Multidimensional Intake Flow Modeling of a Four-Stroke Engine with Comparisons to Flow Velocity Measurements
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Abstract
Intake flow for a four-stroke experimental gasoline engine is modeled considering moving valves and realistic port geometries. The numerical model is based on the KIVA-3 code and computed flow velocities are compared with LDV measurements. Computations start prior to intake valve opening and the pressure boundaries are specified at both the intake and exhaust pipe cross sections. Numerical results show that the in-cylinder flow pattern is well simulated in the symmetric plane passing through the cylinder axis. The computed and measured cylinder pressure and flow velocities agree reasonably well during the intake process. At top-dead-center, computations show a rotating flow pattern exists in the squish region corresponding to an area with relatively high turbulent kinetic energy. Results of intake flow modeling also show the evolution of in-cylinder averaged turbulent kinetic energy is different if the intake charging process is not modeled.
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Citation
Kong, S. and Hong, C., "Multidimensional Intake Flow Modeling of a Four-Stroke Engine with Comparisons to Flow Velocity Measurements," SAE Technical Paper 970883, 1997, https://doi.org/10.4271/970883.Also In
References
- Sugiura, A. Yamada, T. Inoue, T. Morinishi, K. Satofuka, N. “Numerical Analysis of Flow in the Induction System of an Internal Combustion Engine-Multidimensional Calculation Using a New Method of Lines,” SAE 900255 1990
- Aita, S. Tabbal, A. Munck, G. Fujiwara, K. Hongoh, H. Tamura, E. Obana, S. “Numerical Simulation of Port-Valve-Cylinder Flow in Reciprocating Engines,” SAE 900820 1990
- Luo, KH. Bray, K.N.C. “3D Simulation of Induction Port Flow of a Four-Valve Engine Configuration,” SAE 920586 1992
- Taghavi, R. Dupont, A. “Investigation of the Effect of Inlet Port on the Flow in a Combustion Chamber Using Multidimensional Modeling J. Engng for Gas Turbines and Power III 7 1989 479 484
- Haworth, D.C. El-Tahry, S.H. Huebler, M.S. Chang, S. “Multidimensional Port-and-Cylinder Flow Calculations for Two- and Four-Valve-Per-Cylinder Engines: Influence of Intake Configuration on Flow Structure,” SAE 900257 1990
- Le Coz, J.-F. Henriot, S. Pinchon, P. “An Experimental and Computational Analysis of the Flow Field in a Four-Valve Spark Ignition Engine-Focus on Cycle-Resolved turbulence,” SAE 900056 1990
- Amsden, A.A. O'Rourke, P.J. Butler, T.D. Meintjes, K. Fansler, T.D. “Comparisons of Computed and Measured Three-Dimensional Velocity Fields in a Motored Two-Stroke Engine,” SAE 920418 1992
- Rutland, C.J. Pieper, C.M. Hessel R. “Intake and Cylinder Flow Modelling with a Dual-Valve Port,” SAE 930069 1993
- Hessel, R.P. Rutland, C.J. “Intake Flow Modeling in a Four-Stroke Diesel Using KIVA-3,” J. Propulsion and Power 11 2 1995 378 384
- Stephenson, P.W. Rutland, C.J. “Modeling the Effects of Intake Generated Turbulence and Resolved Flow Structures on Combustion in DI Diesel Engines,” SAE 960634 1996
- Amsden, A.A. “KIVA-3: A KIVA Program with Block-Structured Mesh for Complex Geometries,” Los Alamos Nat'l Lab. 1993
- Hong, C-W. Huang, C.-W. “In-Cylinder Turbulent Flow Field Measurement of a Single-Cylinder Transparent Engine Using FLDV,” J. Chinese Soc. Mech. Engng 16 5 1995 457 466
- Grasso, F. Wey, M.J. Bracco, F. V. Abraham, J. “Three-dimensional Computations of Flows in a Stratffied-Charge Rotary Engine,” SAE 870409 1987