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Effects on Charge Non-Uniformity on Diesel Heat Release Analysis
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English
Abstract
A new model that includes the effects of spatial non-uniformity for the heat release analysis of internal combustion engine data has been formulated. The model has a form similar to the simple single zone thermodynamic models if two effective values of the ratio of specific heats T are defined. These values, denoted by γV and γH in the model, are weighted spatial average values of Y, and are dependent on the structure of the flame. These values have been evaluated using a three-dimensional numerical simulation of diesel combustion. Then the model is applied to the heat release analysis of diesel combustion data from a Rapid Compression Machine. The results show that the calculated cumulative net heat release is significantly higher (17% in this case) than that calculated using a single zone model.
Authors
Citation
Cheng, W. and Gentry, R., "Effects on Charge Non-Uniformity on Diesel Heat Release Analysis," SAE Technical Paper 861568, 1986, https://doi.org/10.4271/861568.Also In
References
- Heywood J. B. “Engine Combustion Modelling - An Overview,” Combustion Modelling in Reciprocating Engines Mattavi J. N. Amann C. A. 1 35 Plenum Press 1980
- Krieger R. B. Borman G. L. “The Computation of Apparent Heat Release for Internal Combustion Engines,” ASME paper 66-WA-DGP-4 1966
- Crowe C.T. “Gas Particle Flow” Pulverized Coal Combustion and Gasification Smoot L. Pratt D. Plenum Press 1979
- O'Rourke P.J. “The Acoustic Mode in Numerical Calculations of Subsonic Combustion,” Combustion and Nonlinear Phenomenon Clavin P. Larrouturou B. Pelce P. Courtaboduf, France 229 1985
- Amsden A. Ramshaw J. O'Rourke P. Dukowicz J. “KIVA, A Computer Program for Two- and Three- Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays,” Los Alamos Lab. Report LA-10245-MS 1985
- Amsden A. Ramshaw J. Cloutman L. O'Rourke P. “Improvement and Expansion on the KIVA Computer Program,” Los Alamos Lab Report LA-10534-MS 1985
- Gentry R. Cheng W. “Numerical Simulation of Diesel Combustion,”
- Woschni G. “A Universally Applicable Equation for Instantaneous Heat Transfer in the Internal Combustion Engine,” SAE paper 670951 1967
- Annand W. J. D. “Heat Transfer in the Cylinders of Reciprocating Internal Combustion Engines,” Proc. Inst, Mech. Eng. 177 973 1963