This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical Simulation and Optimum Design of Automotive Catalytic Converters
Technical Paper
2000-05-0309
Annotation ability available
Sector:
Event:
Language:
English
Abstract
A fluid dynamic mathematical model of the room airflow in monolith was established by an equivalent continuum approach. The commercial CFD code STAR-CD was used to simulate multi-dimensional steady flows in automotive catalytic converters. In order to verify the fluid dynamic model of the converter, a three-hole Pitot tube was adopted to measure the velocity distribution at the rear of the monolith. Computing results are in good agreement with experiments, which means the established model is feasible and can be applied to predict the flow performances of various catalytic converters. Then, the enhanced diffusion header (EDH) converters and oblique diffuser converters with different configurations were designed and simulated by the CFD code. Simulation results indicate that EDH and an oblique diffuser can improve the flow uniformity and decrease pressure loss in the converters. These results provide a useful guide for the optimum design of automotive catalytic converters.
Recommended Content
Authors
- Shijin SHUAI - State Key Laboratory of Automobile Safety and Energy Conservation, Tsinghua University, Beijing 100084, China
- Jianxin WANG - State Key Laboratory of Automobile Safety and Energy Conservation, Tsinghua University, Beijing 100084, China
- Renjun ZHUANG - State Key Laboratory of Automobile Safety and Energy Conservation, Tsinghua University, Beijing 100084, China
Topic
Citation
SHUAI, S., WANG, J., and ZHUANG, R., "Numerical Simulation and Optimum Design of Automotive Catalytic Converters," SAE Technical Paper 2000-05-0309, 2000.Also In
References
- Howitt, J.S. Sekella, T.C. 1974 Flow effects in monolithic honeycomb automotive catalytic converters SAE Paper 740244
- Wendland, D.W. Matthes, W.R. 1986 Visualization of automotive catalytic converter internal flow SAE Paper 861554
- Lai, M.C. Kim, J.Y. Cheng, C.Y. Li, P. Chui, G. Pakko, J.D. 1991 Three-dimensional simulations of automotive catalytic converter internal flow SAE Paper 910200
- Jeong, S.J. Kim, T.H. 1997 CFD investigation of the 3-dimensional unsteady flow in the catalytic converter SAE Paper 971025
- STAR-CD Manual, Version 3.05a 1999
- Zygourakis, K. 1989 Transient operation of monolith catalytic converter: A two-dimensional reactor model and the effects of radially nonuniform flow distributions Chem. Eng. Sci. 44 2075 2086
- Wendland, D.W. Sorrell, P.L. Kreucher, J.E. 1991 Sources of monolith catalytic converter pressure loss SAE Paper 912372
- Shuai, S.J. Wang, J.X. Zhuang, R.J. Chen, J.R. 2000 Study on flow characteristics of automotive catalytic converters with various configurations SAE paper 2000-01-0208
- Wendland, D.W. Kreucher, J.E. Andersen, E. 1995 Reducing catalytic converter pressure loss with enhanced inlet-header diffusion SAE Paper 952398
- Maus, W. Bruck, R. 1998 The conical catalytic converter and its potential for future close-coupled converter concepts SAE Paper 980414
- Laurell, M Gottberg, I Idoffsson, T. 1998 An improved underfloor catalyst for 5-cylinder turbo-charged engines SAE Paper 980416