배출물 저감을 위한 촉매변환기 내의 3차원 유동해석

Three-Dimensional Flow Analysis of Catalytic Converter for Reducing Emission

  • 정수진 (정회원, 한양대학교 대학원 기계공학과) ;
  • 김우승 (정회원, 한양대학교 기계공학과)
  • 발행 : 1998.09.01

초록

A numerical and experimental study of three-dimensional steady incompressible non-reacting flow inside various dual-monolith catalytic converters has been conducted for achievement of performance improvement, reduction of light-off time and longer service life by improving the flow uniformity within the monolith. In this study, the effects of curvature of inlet exhaust pipe and monolith brick length on the flow uniformity and pressure drop within monolith were numerically investigated. The computations are confirmed by measurements of steady flow. The agreement between computations and experiment was relatively good. The result of this study shows that curvature of inlet exhaust pipe and monolith brick length gave a great effect on the flow uniformity and the shorter the brick length, the lower flow uniformity and the less pressure drop.

키워드

참고문헌

  1. SAE Paper 9100200 Three-dimensinal Simulations of Automotive Catalytic Converter Internal Flow M. C. Lai;J. Y. Kim
  2. SAE Paper920093 Electrically Heated Extruded Metal Converters for Low Emission Vehicles Socha L.S. Jr.;Thomson D.F.
  3. SAE Paper 74023 Flow through Catalytic COnverters -An Analytical and Experimantal Treatment Chatles D. Lemme;William R. Givens
  4. SAE Paper 740196 Analytical Investigation ofn the Performance of Catalytic Monoliths of Varying Channel Geometries Based on Mass Controlling Conditions W. C. Johnson;J. C. Chang
  5. STAR-CD Ver3.0 User's Manual
  6. NASA CR-179204 Computation of Turbulent Flows Using an Extended k-ε Turbulece closure Model Chen Y.S.;Kim S.W.
  7. SAE Paper 912372 Visualization of Automotive Catalytic Cnverter Internal Flows Wendland D.W.(et al.)
  8. J.Fluid Engineering v.113 Numerical Analysis of Turbulent Flow in Tow-Dimensional Non-symmetric Plane-Wall Diffuser Yuan M.;Song C. C. S.;He J.
  9. SAE Paper 950784 An Experimental Study of the Flow Structure Inside the Catalytic Converter of a Gasoline Engine Fu-Quan Zhao(et al.)
  10. SAE Paper 800841 Mathematical Models for Catalytic Converter Performance C.;LeGray W. J.
  11. '94 International E/G Design Computational Fluid Dynamics in Exhaust System Design and Development Anthony J. Baxendale
  12. SAE Paper 9300780 Optimization of Catalytic Converter Gas Flow Distribution by CFD Prediction Herman Welten(et al.)
  13. AICHE J. v.31 no.6 Mathematical Modelting of Catalytic Converter Light-off, Part Ⅲ : Prediction of Vehicle Emission and Parametric Analysis Oh S.H.;Cavendish J.C.
  14. Numerical Heat Transfer and Fluid Flow Patankar, S. V.
  15. J. Fluid and Structures v.6 no.4 Nunerical and Experimental Characterization of Automotive Catalytic Converter Internal Flows Lai, M. C.(et al.)
  16. J.Fluids Engineering v.105 Simple and Explicit Formulas for the Friction Factor in Turbulent Pipe Flow Haaland, S. E.
  17. Femb-Finite Element Model Builder Version 26.5 - User's Manual
  18. Catalysis and Automotive Pollution Control Ⅲ Studies in Surface Science and Catalysis v.96 Modelling Three-Way Monolithic Catalytic Converter : Comparison Between Simulation and Experimental Data S. Siemund;D. Schweich;J. P. Leclerc;J. Villermaux
  19. SAE Paper 881591 Thermal Response of Monolithic Catalytic Converters During Sustained Engine Misfiring : A Computatinal Study Se H. Oh