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Numerical Simulation of Swirling Port-Valve-Cylinder Flow in Diesel Engines
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Abstract
A CAD/CAE procedure has been used for the analysis of the flow in an intake port-valve-cylinder assembly of a DI Diesel engine. The flow was simulated for both, steady state conditions and transient motored situation during intake and compression strokes. The characteristics of the helical port are analyzed, for the steady state case, in terms flow rate, generation of angular momentum flux and induced in-cylinder flow motion. The results of the simulation were correlated with experimental results, consisting of oil film visualizations on valve and intake port surfaces, and of local velocity measurements in the cylinder. The transient flow simulation shows the different characteristics of the flow motion in cylinder and piston bowl during intake and compression strokes. It was observed that the swirl generating capacity of the valve is different between the valve opening and closing phases. Also, a strong interaction was found between the swirling motion and the shape and position of the piston bowl.
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Aita, S., Tabbal, A., Munck, G., Montmayeur, N. et al., "Numerical Simulation of Swirling Port-Valve-Cylinder Flow in Diesel Engines," SAE Technical Paper 910263, 1991, https://doi.org/10.4271/910263.Also In
References
- Amsden, A.A. Ramshaw, J.D. O'Rourke, P.J. Dukowicz, J.K. 1985 “KIVA: A Computer Program for Two and Three Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays” Los Alamos National Laboratory
- Amsden, A.A. O'Rourke, P.J. Butler, T.D. 1989 “KIVA II: A Computer Program for Chemically Reactive Flows with Sprays” Los Alamos National Laboratory
- Brandstätter, W. Johns, R.J.R. Wiglet, G. 1985 “The Effect of Inlet Port Geometry on In-Cylinder Flow Structure” SAE paper 850499
- Gosman, A.D. Ahmed, A.M.Y. 1987 “Measurement and Multidimensional Prediction of Flow in Axysimmetric Port-Valve Assembly” SAE Paper 870592
- Wakisaka, T. Shimamoto, Y. Isshiki, Y. 1988 “Induction Swirl in a Multiple Intake Valve Engine, Three Dimensional Numerical Analysis” IMech Conf. Paper C40/88
- Aita S. Tabbal A. Munck G. Fujiwara, K. Hongoh, H. Tamura, E. Obana, S. 1990 “Numerical Simulation of Port-Valve -Cylinder Flow in Reciprocating Engines” SAE paper 900820
- Naitoh, K. Fujii, H. Urushihara, T. Takagi, Y. Kuwahara, K. 1990 “Numerical Simulation of The Detailed Flow in Engine Ports and Cylinders” SAE Paper 900256
- Wakisaka, T. Shimamoto, Y. Isshiki, Y. Sumi, N. Tamura, K. 1990 “Analysis of the Effects of In-Cylinder Flows during Intake Stroke on the Flow Characteristics near Compression TDC in Four Stroke Cycle Engines” International Symposium Comodia 90 493 498
- Takenaka, Y. Yabe, M. Aoyagi, Y. Shiozaki, T. 1990 “Three Dimensional Computation of In-Cylinder Flow with Intake Port in DI Diesel Engine” Internat. Symp. Comodia 90 425 430
- Montmayeur, N. Aita, S. Levy, J.F. Tabbal, A. Munck, G. 1990 “PAM-FLUID, A Multipurpose CFD Code Applied to Research and Design Activities in Automotive Industry” VDI Congress
- Aita, S. Montmayeur, N. Levy, J.F. Tabbal, A. Munck, G. 1990 “Computational Fluid Dynamics for Industrial Development and Design activities” IBM CFD Workshop Rome (Italy)
- El Tahry, S.H. 1983 “K-e Equations for Compressible Reciprocating Engines Flows” AIAA journal 7 343 353
- Befrui, Ahmadi B. Gosman, A.D. 1989 “Assessment of Variants of the k-ε Models for Engine Flow Applications” International Numerical Methods in Fluids 9 1073 1086
- Tanabe, S. Iwata, H. Kashiwada, Y. 1990 “Instability of Steady Valve Flow in a Swirl Port” Int. Symp. Comodia 419 424
- Shimamoto, Y. Isshiki, Y. Wakisaka, T. Fujimoto, T.V. 1990 “Investigation of Swirl generating Characteristics of Helical Ports by Numerical Simulation” Int. Symp. Comodia 493 498