Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5476931 | Energy | 2017 | 14 Pages |
Abstract
The main goal of this paper is to assess the transient fluid-dynamic behaviour of wall-flow DPFs using experimental and modelling techniques. The experimental data were gathered in clean and loaded conditions. The DPF was subjected to a variety of pressure excitations to characterise its transient behaviour in the time and frequency domains. Afterwards, the DPF response was evaluated under engine-like operating conditions in an unsteady flow gas stand. Once the main characteristics of the response were known, a non-linear gas-dynamics model was proposed for analysis and prediction. The model accounts for space and time gradients, combining the thermo-and fluid-dynamic solution with a model based on a packed bed of spherical particles that defines the meso-structure of the loaded substrate.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Antonio José Torregrosa, José Ramón Serrano, Pedro Piqueras, Ãscar GarcÃa-Afonso,