2024-03-28T23:52:03Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00017891
2023-01-16T04:06:02Z
320:321:322
Simulation on Flow and Heat Transfer in Diesel Particulate Filter
Yamamoto, Kazuhiro
Nakamura, Masamichi
open access
Copyright © 2011 by ASME
combustion and reactive flows
porous media
conduction
heat and mass transfer
To reduce particulate matters including soot, a diesel particulate filter (DPF) has been developed for the after-treatment of exhaust gas. Since the filter is plugged with particles that would cause an increase of filter back-pressure, filter regeneration process is needed. However, there is not enough data on the phenomena in DPF because there are many difficulties in measurements. In this study, the flow in DPF is simulated by the lattice Boltzmann method. To focus on a real filter, the inner structure of the filter is scanned by a 3D X-ray computed tomography technique. By conducting tomography-assisted simulation, the local velocity and pressure distributions in the filter can be visualized, which is hardly obtained by measurements. Results show that, even in cold flow, the complex flow pattern is observed due to the nonuniformity of pore structure inside the filter. Based on the flow characteristics in the range of 0.2–20 m/s, simulation results show a good agreement with the empirical equation of Ergun equation. In the combustion simulation, the time-dependent temperature field inside the filter is visualized. As the temperature of inflow gas is increased, the filter regeneration process is promoted.
ASME (American Society of Mechanical Engineers)
2011-03
eng
journal article
VoR
http://hdl.handle.net/2237/19976
https://nagoya.repo.nii.ac.jp/records/17891
https://doi.org/10.1115/1.4003448
0022-1481
Journal of Heat Transfer
133
6
060901
060901
https://nagoya.repo.nii.ac.jp/record/17891/files/91.pdf
application/pdf
685.5 kB
2018-02-21