This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation and Improvement of an Unsteady Heat Transfer Model for Spark Ignition Engines
Annotation ability available
Sector:
Language:
English
Abstract
This study utilized time-resolved heat-flux measurements to assess the applicability of a thermal boundary-layer based heat-transfer model. The model is significant in that it is not based on Nu ∼ Re correlation of the heat transfer in steady incompressible pipe flow as are most heat-transfer models used in quasi-dimensional engine simulations. The model was implemented in a two zone zero-dimensional engine simulation with a κ-ϵ turbulence and turbulent combustion submodels which provide the required inputs for the heat transfer model. The experimental engine had a pent-roof shaped combustion chamber with two intake and two exhaust valves. The primary variable examined was the intake-flow configuration which was varied by means of shrouded intake valves.
The presence of large cycle-to-cycle variations in the measured local heat-flux histories necessitated evaluating the heat-transfer model with information from individual cycle calculations. The model in its original formulation was able to accurately predict the heat transfer if convective effects were negligible. After the model was modified to account for these effects, it showed good agreement with measurements made at a location exposed to a strong convective influence. The model gave significantly improved heat-transfer predictions over the currently available correlations tested.
Recommended Content
Authors
Citation
Puzinauskas, P. and Borgnakke, C., "Evaluation and Improvement of an Unsteady Heat Transfer Model for Spark Ignition Engines," SAE Technical Paper 910298, 1991, https://doi.org/10.4271/910298.Also In
References
- Gatowski, J.A. “Effects of Charge Motion on Combustion in a Spark-Ignition Engine,” Ph.D. Thesis Massachusetts Institute of Technology 1984
- Kuo, T. Reitz, R.D. “Computation of Pre-Mixed Charge Combustion in Pancake and Pent-Roof Engines,” SAE Paper 890670 1989
- Gilaber, P. Pinchon, P. “Measurements and Multidimensional Modeling of Gas-Wall Heat Transfer in a S.I. Engine,” SAE Paper 880516 1988
- Oguri, T. “On the Coefficient of Heat Transfer between Gases and Cylinder Walls of the Spark-Ignition Engine,” Bulletin of JSME 3 11 363 369 1960
- Overbye, V.D. Bennethum, J.E. Uyehara, O.A. Myers, P.S. “Unsteady Heat Transfer in Engines,” SAE Transactions 69 461 494 1961
- Annand, J.D. “Heat Transfer in the Cylinders of Reciprocating I.C. Engines,” Proc. Inst. Mech. Eng. 177 36 1963
- Knight, B.E. “The Problem of Predicting Heat Transfer in Diesel Engines,” Proc. Inst. Mech. Eng. 179 1964-1965
- Woschni, G. “A Universally Applicable Equation for Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine,” SAE Transactions 76 3065 3083 1967
- Lefeuvre, T. Meyers, P.S. Uyehara, O.A. “Experimental Instantaneous Heat Fluxes in a Diesel Engine and Their Correlation,” SAE Transactions 78 1969
- Woschni, G. “Die Berechnung der Wandverluste und der Thermischen Belastung der Bauteile von Dieselmotoren,” Motortechnishe Zeitschrift 30 12 491 499 1970
- Annand, J. D. Ma, T.H. “Instantaneous Heat Transfer Rates to the Cylinder Head Surface of a Small C.I. Engine,” Proc. Inst. Mech. Eng. 185 1970-71
- Annand, J.D. Pinfold, D. “Heat Transfer in the Cylinder of a Motored Reciprocating Engine,” SAE Paper no. 800457 1980
- Poulos, S.G. Heywood, J.B. “The Effect of Chamber Geometry on Spark Ignition Engine Combustion,” SAE Paper no. 830334 1983
- Woschni, G. Fieger, J. “Experimentelle Untersuchungen zum Wärmeübergang bei normaler und Klopfender Verbrennung im Ottomotor,” Motortechnishe Zeitschrift 43 2 63 67 1982
- Morel, T. Keribar, R. “A Model for Predicting Spatially and Time Resolved Convective Heat Transfer in Bowl-in-Piston Combustion Chambers,” SAE Paper 850204 1985
- Borman, G. Nishiwaki, K. “Internal-Combustion Engine Heat Transfer,” Prog. Energy Combust. Sci 13 1 46 1987
- Jennings, M.J. Morel, T. “Modeling of Turbulent Heat Transfer with Application to IC Engines,” SAE Paper 872104 1987
- Morel, T. Rackmil, C.I. Keribar, R. Jennings, M.J. “Model for Heat Transfer in Spark Ignited Engines and Its Comparison with Experiments,” SAE Paper 880198 1988
- Borgnakke, C. Arpaci, V.S. Tabaczynski, R.J. “A Model for the Instantaneous Heat Transfer and Turbulence in a Spark Ignition Engine,” SAE Paper 800287 1980
- Alkidas, A. C. Puzinauskas, P. V. Peterson, R.C. “Combustion and Heat Transfer Studies in a Spark-Ignited Multivalve Optical Engine” SAE Paper 900353 1990
- Alkidas, A.C. Personal Correspondance 1989
- Walker, G. “Effect of the Rate of Combustion on Gasoline Engine Performance,” Jour, of the Inst. of Fuel 37 228 231 June 1964
- Blizard, N.C. Keck, J. C. “Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion Engines,” SAE Paper 740191 1974
- Tabaczynski, R.J. Ferguson, CR. Radhakrishnan, K. “A Turbulent Entrainment Model for Spark Ignition Engine Combustion,” SAE Paper 770647 1977
- Heywood, J.B. “Engine Combustion Modeling-An Overview,” Combustion Modeling in Reciprocating Engines Mattavi, J.N. Amann, C.A. Plenum, NY 1980
- Launder, B.E. Spalding, D.B. Lectures in Mathematical Models of Turbulence Academic Press 1972
- Keck, J.C. “Turbulent Flame Structure and Speed in Spark-Ignition Engines,” 19th. Int. Symp. on Combustion 1451 The Combustion Institute 1982
- Lavoie, G.A. “Correlations of Combustion Data for S.I. Engine Calculations- Laminar Flame Speed, Quench Distance and Global Reaction Rates,” SAE Paper 780229 1978
- Reynolds, W.C. “Modeling of Fluid Motions in Engines - An Introductory Overview,” Combustion Modeling in Reciprocating Engines Mattavi, J.N. Amann, CA. Plenum, NY 1980
- Ferguson, C.R. Keck, J.C. “On Laminar Flame Quenching and Its Application to Spark Ignition Engines,” Combustion and Flame 197 205 1977
- Wolfshtein, M. “The Velocity and Temperature Distribution in One-Dimensional Flow With Turbulence Augmentation and Pressure Gradient,” J. Heat and Mass Transfer 12 301 318 1969
- Prandtl, L. Z. Angew. Math. Meth. 5 136 1925
- Puzinauskas, P.V. “Combustion and Heat-Transfer Studies in a Spark-Ignition Engine” Ph.D. Thesis University of Michigan Ann Arbor 1989