TY - JOUR
T1 - CFD-IBM-DEM simulation for elucidation of PM filtration mechanisms in fluidized bed filter
AU - Yokoo, Kento
AU - Kishida, Masahiro
AU - Yamamoto, Tsuyoshi
N1 - Funding Information:
This study was partially supported by the Environment Research and Technology Development Fund JPMEERF20191007 of the Environmental Restoration and Conservation Agency of Japan . The computation was carried out using the computer resource offered under the category of General Projects by Research Institute for Information Technology, Kyushu University.
Funding Information:
This study was partially supported by the Environment Research and Technology Development Fund JPMEERF20191007 of the Environmental Restoration and Conservation Agency of Japan. The computation was carried out using the computer resource offered under the category of General Projects by Research Institute for Information Technology, Kyushu University.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/4
Y1 - 2022/4
N2 - Fluidized bed filters exhibit high PM2.5 collection efficiency, as shown in our previous work. In this study, a CFD-IBM-DEM simulation was conducted to elucidate the filtration mechanisms for the further development of these filters. A preliminary numerical simulation of a small fixed-bed filter was performed to determine the appropriate CFD grid size for computational accuracy and cost, and the grid of bed particles/10 was applied for PM filtration simulation of the fluidized bed. Numerical collection efficiency is high value of 92.06%, with bed particles of 420 μm and a superficial velocity of 0.4 m/s. Fluidization becomes violent at 0.6 m/s, which decreases the collection efficiency to 84.12%. However, gentle fluidization is maintained even at 0.6 m/s using bed particles of 600 μm, and the fluidization is the same as that observed using bed particles of 420 μm and 0.4 m/s. These fluidization states exhibit similar collection efficiency.
AB - Fluidized bed filters exhibit high PM2.5 collection efficiency, as shown in our previous work. In this study, a CFD-IBM-DEM simulation was conducted to elucidate the filtration mechanisms for the further development of these filters. A preliminary numerical simulation of a small fixed-bed filter was performed to determine the appropriate CFD grid size for computational accuracy and cost, and the grid of bed particles/10 was applied for PM filtration simulation of the fluidized bed. Numerical collection efficiency is high value of 92.06%, with bed particles of 420 μm and a superficial velocity of 0.4 m/s. Fluidization becomes violent at 0.6 m/s, which decreases the collection efficiency to 84.12%. However, gentle fluidization is maintained even at 0.6 m/s using bed particles of 600 μm, and the fluidization is the same as that observed using bed particles of 420 μm and 0.4 m/s. These fluidization states exhibit similar collection efficiency.
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U2 - 10.1016/j.powtec.2022.117336
DO - 10.1016/j.powtec.2022.117336
M3 - Article
AN - SCOPUS:85127790783
SN - 0032-5910
VL - 402
JO - Powder Technology
JF - Powder Technology
M1 - 117336
ER -