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Zhao Binjuan
School of Energy and Power
Engineering,
Jiangsu University,
Zhenjiang 212013, China
Yuan Shouqi
Research Center of Fluid Machinery
Engineering and Technology,
Jiangsu University,
Zhenjiang 212013, China
Seizo Kato
Akira Nishimura
Department of Mechanical Engineering,
Faculty of Engineering,
Mie University,
1515 Kamihama-cho,
Tsu, 514-8507, Japan
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NUMERICAL SIMULATION FOR AIR
AND AIR-PM FLOW IN WALL FLOW
DIESEL PARTICULATE FILTERS
Abstract: Numerical simulations are performed both for the single airflow and air-PM two-phase flow in wall flow diesel particulate filters (DPF) for the first time. The calculation domain is divided into two regions. In the inlet and outlet flow channels, the simulations are performed for the steady and laminar flow; In the porous filtration walls, the calculation model for flow in porous media is used. The Lagrange two-phase flow model is used to calculate the air-PM flow in DPF, for the dispersed phase (PM), its flow tracks are obtained by the integrating of the Lagrange kinetic equation. The calculated velocity, pressure distribution and PM flow tracks in DPF
are obtained, which exhibits the main flow characteristics in wall flow DPF and will be help for the optimal design and performance prediction of wall flow DPF.
Key words:
Wall flow diesel particulate filters (DPF) Numerical simulation Two-phase flow
Lagrange two-phase flow model
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