The main difficulty for the one-dimensional simulation of pressure waves in the inlet and exhaust systems of Internal Combustion Engines consists in the modeling of singularities (area changes, bends, junctions, etc.). The models presented in the literature are based on the behavior of the singularity in steady flow. However the pressure losses due to the wave propagation are different from those obtained in stationary flow. The authors’ objective is to propose models with a better precision based on the non steady study of the singularities which can be found in Internal Combustion Engines. Specifically, this paper presents the investigation of the pipe wall friction factor and the sudden contraction area. The first step consists in studying the behavior of pressure waves through pipes with the Fluent CFD code. Next, a model parameterized with the Reynolds number is proposed for the pipe wall friction factor while another one with the Mach number is proposed for the sudden contraction area. These models are included in a 1-D simulation code. Finally, in order to evaluate the accuracy of the simulation program, the models are compared with experimental data. The results show a satisfactory agreement between model predictions and experimental measurements.
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ASME 2002 Internal Combustion Engine Division Fall Technical Conference
September 8–11, 2002
New Orleans, Louisiana, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-4662-8
PROCEEDINGS PAPER
Unsteady Flows Inside the Piping Systems of Internal Combustion Engines: 1-D Simulation Modeling and Experimental Validation Available to Purchase
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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Michel Violleau
Michel Violleau
Ecole Centrale de Nantes, Nantes, France
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David Chalet
Ecole Centrale de Nantes, Nantes, France
Pascal Chesse
Ecole Centrale de Nantes, Nantes, France
Michel Violleau
Ecole Centrale de Nantes, Nantes, France
Paper No:
ICEF2002-525, pp. 419-426; 8 pages
Published Online:
January 22, 2009
Citation
Chalet, D, Chesse, P, & Violleau, M. "Unsteady Flows Inside the Piping Systems of Internal Combustion Engines: 1-D Simulation Modeling and Experimental Validation." Proceedings of the ASME 2002 Internal Combustion Engine Division Fall Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. New Orleans, Louisiana, USA. September 8–11, 2002. pp. 419-426. ASME. https://doi.org/10.1115/ICEF2002-525
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