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An Empirically Integrated CFD Method for Racing Engine Layout and Its Practical Demonstration
Technical Paper
2012-32-0068
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Racing engines are required to be developed quickly in order to adapt to ever-changing regulations. A CFD-based optimization would be a useful tool to discover the best solution given the restrictions of the regulations. However, a CFD approach requires repeated trials and errors until the best solution is found because the numerical goal is unknown and the specifications required for the goal are never calculated back when using CFD. Therefore, this paper proposes an Empirically Integrated CFD Method. It is a combination of a one-dimensional CFD and several empirical equations that are derived from the racing engine database with physical meanings. These empirical equations give the CFD-based optimization a proper goal and primary specifications so as to make the optimization loop converge rapidly. This method is experimentally verified for its practical application with a prototype engine. Moreover, this prototype engine reveals the impact of the combustion chamber design on the thermal efficiency, which has not been reflected in conventional CFD. As a result of this study, the Empirically Integrated CFD Method for Racing Engine Layout is established.
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Citation
Yasui, S. and Nakamura, D., "An Empirically Integrated CFD Method for Racing Engine Layout and Its Practical Demonstration," SAE Technical Paper 2012-32-0068, 2012, https://doi.org/10.4271/2012-32-0068.Also In
References
- Optimization and Computational Fluid Dynamics Dominique, Thévenin Gábor, Janiga
- YOSHIDA, Kingo FUJIMOTO, Tetsuya “Engine Development Using Engine Cycle Simulation with Optimization Tool” Proceedings. JSAE Annual Congress 85-00 2000
- Lakshminarasimhan, V. Ramasamy, M. Babu, Y. “4 Stroke Gasoline Engine Performance Optimization Using Statistical Techniques,” SAE Technical Paper 2001-01-1800 2001 10.4271/2001-01-1800
- Ioannou, M. Gurney, D. Downing, J. “The Application of Design of Experiments and 1-D Simulation to Create a Rapid Concept Optimisation Tool for I4 Engines,” SAE Technical Paper 2005-01-0226 2005 10.4271/2005-01-0226
- Santos, R. Zabeu, C. de Almeida, G. Mendes, M. et al. “Improving the Longitudinal Vehicle Acceleration Performance by Engine Optimization through 1D Numerical Simulation,” SAE Technical Paper 2007-01-2778 2007 10.4271/2007-01-2778
- Blair, G.P. “Virtual 4-Stroke engine simulation” Optimum Power Technology www.optimum-power.com
- WAVE, Ricardo http://www.ricardo.com/en-GB/What-we-do/Software/Products/WAVE/
- GT-SUITE Gamma Technologies, Inc. http://www.gtisoft.com/
- Fujii, I. Yagi, S. Sono, H. Kamiya, H. “Total Engine Friction in Four Stroke S.I. Motorcycle Engine,” SAE Technical Paper 880268 1988 10.4271/880268
- Yagi, S. Ishibasi, Y. Sono, H. “Experimental Analysis of Total Engine Friction in Four Stroke S.I. Engines,” SAE Technical Paper 900223 1990 10.4271/900223
- Yagi, S. Fujiwara, K. Kuroki, N. Maeda, Y. “Estimate of Total Engine Loss and Engine Output in Four Stroke S.I. Engines,” SAE Technical Paper 910347 1991 10.4271/910347
- Taylor, C.F. “The Internal Combustion Engine in Theory and Practice” 1 M.I.T. Press 1966