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Analysis of the Flow Field from Connection Cones to Monolith Reactors

Author

Listed:
  • Mingfei Mu

    (School of Transportation Science and Engineering, Beihang University, Beijing 100083, China
    Department of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-41296 Göteborg, Sweden)

  • Jonas Sjöblom

    (Department of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-41296 Göteborg, Sweden)

  • Henrik Ström

    (Department of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-41296 Göteborg, Sweden)

  • Xinghu Li

    (School of Transportation Science and Engineering, Beihang University, Beijing 100083, China)

Abstract

The connection cones between an exhaust pipe and an exhaust after-treatment system (EATS) will affect the flow into the first monolith. In this study, a new streamlined connection cone using non-uniform rational B-splines (NURBS) is applied to optimize the flow uniformity inside two different monoliths (a gasoline particulate filter and an un-coated monolith). NURBS and conventional cones were created using 3D printing with two different cone angles. The velocities after the monolith were collected to present the uniformity of the flows under different cones and different velocities. The test results indicate that NURBS cones exhibit better performance. Furthermore, all of the pressure drops of the bench test were measured and compared with those of the conventional cones, demonstrating that the NURBS cones can reduce the pressure drop by up to 12%. The computer fluid dynamics simulations depict detailed changes in the flow before and after entering the monolith. The results show that the NURBS cone avoids the generation of a recirculating zone associated with conventional cones and creates a more uniform flow, which causes a lower pressure drop. Meanwhile, the package structure of the NURBS cone can reduce the space requirements. Finally, the implications of the flow distributions are discussed.

Suggested Citation

  • Mingfei Mu & Jonas Sjöblom & Henrik Ström & Xinghu Li, 2019. "Analysis of the Flow Field from Connection Cones to Monolith Reactors," Energies, MDPI, vol. 12(3), pages 1-20, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:455-:d:202329
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    References listed on IDEAS

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    Cited by:

    1. Mingfei Mu & Jonas Sjöblom & Nikhil Sharma & Henrik Ström & Xinghu Li, 2019. "Experimental Study on the Flow Field of Particles Deposited on a Gasoline Particulate Filter," Energies, MDPI, vol. 12(14), pages 1-18, July.
    2. Mingfei Mu & Xinghu Li & Yong Qiu & Yang Shi, 2019. "Study on a New Gasoline Particulate Filter Structure Based on the Nested Cylinder and Diversion Channel Plug," Energies, MDPI, vol. 12(11), pages 1-19, May.

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