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Numerical study of fluid flow and effect of inlet pipe angle In catalytic converter using CFD

Author Affiliations

  • 1 School of Mechanical and Building Sciences, VIT University, Vellore– 632 014, Tamil Nadu, INDIA

Res. J. Recent Sci., Volume 1, Issue (7), Pages 39-44, July,2 (2012)


Catalytic converter has become a necessity to achieve low emissions in all the vehicles. The design of catalytic converter has become critical which requires a thorough understanding of fluid flow inside the catalytic converter. In this paper, an attempt has been made to study the effect of fluid flow due to geometry changes using commercial CFD tool. The study has been conducted assuming the fluid to be air. A section of catalytic converter has been solved for analysis due do its rotational symmetry. The substrate region is modeled as a porous medium. The governing equations namely conservation of mass, momentum will be solved for analysis. The predicted numerical results are validated with those available in literature. The analysis involved determining back pressure across the converter system for mass flow rates and inlet pipe angle. The numerical results were used determine the optimum geometry required to have a uniform velocity profile at the inlet to the substrate.


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