The linear k-ε model, in its different formulations, still remains the most widely used turbulence model for the solutions of internal combustion engine (ICE) flows thanks to the use of only two scale-determining transport variables and the simple constitutive relation. This paper discusses the application of nonlinear k-ε turbulence models for internal combustion engine flows. Motivations to nonlinear eddy viscosity models use arise from the consideration that such models combine the simplicity of linear eddy-viscosity models with the predictive properties of second moment closure. In this research the nonlinear k-ε models developed by Speziale in quadratic expansion, and Craft et al. in cubic expansion, have been applied to a practical tumble flow. Comparisons between calculated and measured mean velocity components and turbulence intensity were performed for simple flow structure case. The effects of quadratic and cubic formulations on numerical predictions were investigated too, with particular emphasis on anisotropy and influence of streamline curvature on Reynolds stresses.
On Application of Nonlinear k-ε Models for Internal Combustion Engine Flows
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, July 1999; final revision received by the ASME Headquarters, August 2001. Editor: D. N. Assanis.
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Bianchi, G. M., Cantore , G., Parmeggiani, P., and Michelassi, V. (June 19, 2002). "On Application of Nonlinear k-ε Models for Internal Combustion Engine Flows ." ASME. J. Eng. Gas Turbines Power. July 2002; 124(3): 668–677. https://doi.org/10.1115/1.1454115
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