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Experiment and Numerical Simulation of Unsteady Temperature Fields in Automotive Catalytic Converters
Technical Paper
2001-01-3563
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper measured unsteady temperature fields of uncoated-monolith and catalytic monolith under real engine operating conditions using thermocouples. A multi-dimensional flow mathematical model of the turbulence, heat and mass transfer, and chemical reactions in monoliths was established using a computational fluid dynamics (CFD) code and numerically solved in the whole flow field of the catalytic converter. The purpose of this paper is to study unsteady warm-up characteristics of the monoliths and to investigate effects of inlet cone structure on temperature distribution of the catalytic converter. Experimental results show that the warm-up behaviors between uncoated-monolith and catalytic monolith are quite different. Simulation results indicate that the established model can qualitatively predict the warm-up characteristics. Increasing the inlet cone angle can improve the light-off characteristics of the catalysts due to high flow velocity and high temperature in the center of the monoliths.
Authors
Citation
Wang, J., Shuai, S., and Zhuang, R., "Experiment and Numerical Simulation of Unsteady Temperature Fields in Automotive Catalytic Converters," SAE Technical Paper 2001-01-3563, 2001, https://doi.org/10.4271/2001-01-3563.Also In
References
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