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Computation 2016, 4(4), 46; doi:10.3390/computation4040046

Effect of Pore Structure on Soot Deposition in Diesel Particulate Filter

Department of Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Christian F. Janßen
Received: 21 October 2016 / Revised: 17 November 2016 / Accepted: 29 November 2016 / Published: 2 December 2016
(This article belongs to the Special Issue CFD: Recent Advances in Lattice Boltzmann Methods)
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Abstract

Nowadays, in the after-treatment of diesel exhaust gas, a diesel particulate filter (DPF) has been used to trap nano-particles of the diesel soot. However, as there are more particles inside the filter, the pressure which corresponds to the filter backpressure increases, which worsens the fuel consumption rate, together with the abatement of the available torque. Thus, a filter with lower backpressure would be needed. To achieve this, it is necessary to utilize the information on the phenomena including both the soot transport and its removal inside the DPF, and optimize the filter substrate structure. In this paper, to obtain useful information for optimization of the filter structure, we tested seven filters with different porosities and pore sizes. The porosity and pore size were changed systematically. To consider the soot filtration, the particle-laden flow was simulated by a lattice Boltzmann method (LBM). Then, the flow field and the pressure change were discussed during the filtration process. View Full-Text
Keywords: diesel engine; after-treatment; filtration; soot; diesel particulate filter; lattice Boltzmann method; pore structure diesel engine; after-treatment; filtration; soot; diesel particulate filter; lattice Boltzmann method; pore structure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yamamoto, K.; Sakai, T. Effect of Pore Structure on Soot Deposition in Diesel Particulate Filter. Computation 2016, 4, 46.

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