Abstract
Abstract
A one-dimensional model of the loading and the regeneration process of Diesel particulate filters (DPF) has been developed and validated by J.Eberspaecher GmbH. The model takes into account soot and ash deposition both along the filter wall and at the end of the plugged channels. The regeneration process is calculated with a simplified reaction model. As the model is pure one-dimensional, inherently it cannot account for threedimensional effects. Appropriate laboratory work showed, that especially in the inlet plane of such filters the velocity distribution is far from being homogeneous, the same is true when looking at the three-dimensional temperature distribution in the filter during the regeneration. To overcome such limitations, the 1D-model (DPF) has been integrated into the 3D-code FLUENT (CFD). The combination of both tools is now able to handle within a common framework the local deposition and reaction mechanisms as well as predicting the global fluid flow behaviour and the associated thermal conditions.