Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter
Using five samples with different porous materials of Al2TiO5, SiC, and cordierite, we numerically realized the fluid dynamics in a diesel filter (diesel particulate filter, DPF). These inner structures were obtained by X-ray CT scanning to reproduce the flow field in the real product. The porosity...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Computation |
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| Online Access: | http://www.mdpi.com/2079-3197/6/4/52 |
| _version_ | 1818536278461775872 |
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| author | Kazuhiro Yamamoto Yusuke Toda |
| author_facet | Kazuhiro Yamamoto Yusuke Toda |
| author_sort | Kazuhiro Yamamoto |
| collection | DOAJ |
| description | Using five samples with different porous materials of Al2TiO5, SiC, and cordierite, we numerically realized the fluid dynamics in a diesel filter (diesel particulate filter, DPF). These inner structures were obtained by X-ray CT scanning to reproduce the flow field in the real product. The porosity as well as pore size was selected systematically. Inside the DPF, the complex flow pattern appears. The maximum filtration velocity is over ten times larger than the velocity at the inlet. When the flow forcibly needs to go through the consecutive small pores along the filter’s porous walls, the resultant pressure drop becomes large. The flow path length ratio to the filter wall thickness is almost the same for all samples, and its value is only 1.2. Then, the filter backpressure closely depends on the flow pattern inside the filter, which is due to the local substrate structure. In the modified filter substrate, by enlarging the pore and reducing the resistance for the net flow, the pressure drop is largely suppressed. |
| first_indexed | 2024-12-11T18:35:54Z |
| format | Article |
| id | doaj.art-21ff71f7705e4db6b9e39c777597fb91 |
| institution | Directory Open Access Journal |
| issn | 2079-3197 |
| language | English |
| last_indexed | 2024-12-11T18:35:54Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Computation |
| spelling | doaj.art-21ff71f7705e4db6b9e39c777597fb912022-12-22T00:54:46ZengMDPI AGComputation2079-31972018-09-01645210.3390/computation6040052computation6040052Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic FilterKazuhiro Yamamoto0Yusuke Toda1Department of Mechanical Systems Engineering, Nagoya University, Chikusa, Furo 1, Nagoya, Aichi-ken 4648603, JapanDepartment of Mechanical Systems Engineering, Nagoya University, Chikusa, Furo 1, Nagoya, Aichi-ken 4648603, JapanUsing five samples with different porous materials of Al2TiO5, SiC, and cordierite, we numerically realized the fluid dynamics in a diesel filter (diesel particulate filter, DPF). These inner structures were obtained by X-ray CT scanning to reproduce the flow field in the real product. The porosity as well as pore size was selected systematically. Inside the DPF, the complex flow pattern appears. The maximum filtration velocity is over ten times larger than the velocity at the inlet. When the flow forcibly needs to go through the consecutive small pores along the filter’s porous walls, the resultant pressure drop becomes large. The flow path length ratio to the filter wall thickness is almost the same for all samples, and its value is only 1.2. Then, the filter backpressure closely depends on the flow pattern inside the filter, which is due to the local substrate structure. In the modified filter substrate, by enlarging the pore and reducing the resistance for the net flow, the pressure drop is largely suppressed.http://www.mdpi.com/2079-3197/6/4/52porous media flowdiesel exhaustDPFLBMpressure drop |
| spellingShingle | Kazuhiro Yamamoto Yusuke Toda Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter Computation porous media flow diesel exhaust DPF LBM pressure drop |
| title | Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter |
| title_full | Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter |
| title_fullStr | Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter |
| title_full_unstemmed | Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter |
| title_short | Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter |
| title_sort | numerical simulation on flow dynamics and pressure variation in porous ceramic filter |
| topic | porous media flow diesel exhaust DPF LBM pressure drop |
| url | http://www.mdpi.com/2079-3197/6/4/52 |
| work_keys_str_mv | AT kazuhiroyamamoto numericalsimulationonflowdynamicsandpressurevariationinporousceramicfilter AT yusuketoda numericalsimulationonflowdynamicsandpressurevariationinporousceramicfilter |