Inertial impaction-dominated diesel particle collection in filters with rectangular fibers

Document Type

Conference Proceeding

Publication Date

1-1-2001

Abstract

For the control of particulate emission from diesel engines, particulate filter is of great importance. Fibrous filter is one of the most common filters due to its simplicity in structure and low cost in manufacturing. In this paper, filters with rectangular fibers are studied numerically, in which the filter is simulated as a staggered array of parallel rectangular fibers placed transverse to the flow. Two-dimensional flow field is obtained by solving the Navier-Stokes equations with the finite volume method Particle trajectories are then calculated by solving the corresponding Lagrangian equation of motion to obtain the collection efficiency of filters. The simulation considers particle capture mechanisms of interception and inertial impaction. The effects of fiber aspect ratio, filter packing density, particulate size on the collection efficiency of a rectangular fiber are also numerically determined.

Identifier

0348223681 (Scopus)

Publication Title

American Society of Mechanical Engineers Internal Combustion Engine Division Publication ICE

External Full Text Location

https://doi.org/10.1115/2001-ice-426

ISSN

10665048

First Page

21

Last Page

27

Issue

3

Volume

37

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