Controlling the pressure wave propagation inside the inlet and exhaust systems of internal combustion engines is essential for the optimization of the cylinder filling and emptying as well as the combustion process. In this objective, the authors have been developing a new one-dimensional simulation code for several years. This paper presents an investigation of plain open end boundary conditions and bend elements. First, the pressure waves at the pipe inlet are analyzed with the Fluent CFD code. It appears that the losses can be modeled with the use of a coefficient that depends on the Mach number as well as the ratio between the pipe diameter and thickness. Then, the paper focuses on the modeling of bends. The losses in this type of elements can be modeled by the addition of a friction factor in the gas dynamics equations. This factor depends on the bend angle and the ratio between the tube radius of curvature and diameter. Finally, an experimental study aimed at evaluating the accuracy of the 1D simulation code is presented. The code enhancements significantly improve flow calculations and allow for the optimization of the inlet and exhaust systems of internal combustion engines.
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ASME 2003 Internal Combustion Engine Division Spring Technical Conference
May 11–14, 2003
Salzburg, Austria
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-3678-9
PROCEEDINGS PAPER
Analysis and Modeling of Plain Open Ends and Bends Inside the Piping Systems of Internal Combustion Engines
David Chalet,
David Chalet
Ecole Centrale de Nantes, Nantes, France
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Pascal Chesse,
Pascal Chesse
Ecole Centrale de Nantes, Nantes, France
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Jean-Franc¸ois Hetet,
Jean-Franc¸ois Hetet
Ecole Centrale de Nantes, Nantes, France
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Bahadir Inozu,
Bahadir Inozu
University of New Orleans, New Orleans, LA
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Philippe Roy
Philippe Roy
University of New Orleans, New Orleans, LA
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David Chalet
Ecole Centrale de Nantes, Nantes, France
Pascal Chesse
Ecole Centrale de Nantes, Nantes, France
Jean-Franc¸ois Hetet
Ecole Centrale de Nantes, Nantes, France
Bahadir Inozu
University of New Orleans, New Orleans, LA
Philippe Roy
University of New Orleans, New Orleans, LA
Paper No:
ICES2003-0589, pp. 429-435; 7 pages
Published Online:
February 4, 2009
Citation
Chalet, D, Chesse, P, Hetet, J, Inozu, B, & Roy, P. "Analysis and Modeling of Plain Open Ends and Bends Inside the Piping Systems of Internal Combustion Engines." Proceedings of the ASME 2003 Internal Combustion Engine Division Spring Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. Salzburg, Austria. May 11–14, 2003. pp. 429-435. ASME. https://doi.org/10.1115/ICES2003-0589
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