Authors
V.K. Chakravarthy, J.C. Conklin, C.S. Daw, and E.F.D'Azevedo
Publication
Accepted for publication in Applied Catalysis B: Environmental
Abstract
A two-dimensional model is used to study multi-dimensional effects
during cold-start transient operation of a catalytic converter.
It is seen that the flow distribution among monolith channels can
be highly non-uniform due to inlet effects, and ignition occurs much
earlier in channels with higher flow rates. At lower temperatures,
the axial location of ignition can also vary from one channel to
another. The effects of inlet flow non-uniformity, in general, tend to
decrease with increasing inflow temperature due to increasing gas
viscosity. |
