Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Finite Element Method Applied to Diesel Particulate Filter Flow
Submission Author:
Felipe Feres Ferreira , RJ , Brazil
Co-Authors:
Felipe Feres Ferreira, Gustavo Rabello dos Anjos
Presenter: Felipe Feres Ferreira
doi://10.26678/ABCM.ENCIT2022.CIT22-0298
Abstract
"Nowadays, air pollution is one of the greatest problems faced by humanity and one of its main causes is the gases present in the vehicles exhaust. In order to mitigate these problems in diesel fueled vehicles, it is usually used a device named Diesel Particulate Filter, also known as DPF, which is responsible for filtering the particulates contained in the exhausted air. Since currently there are very strict laws regulating the quantity of particulates which are being exhausted to the atmosphere, it is very important to study this device in order to ensure its performance and to make improvements possible. So, in order to study the flow behavior inside this device, this work aims to develop a computational code using an CFD approach. This case was modelled as a single-phase air flow inside the device and the air was modelled as an incompressible Newtonian fluid. The governing equations of the flow are the Navier-Stokes equations and, since there is a porous media inside the DPF, the Darcy-Forchheimer model is used in the Navier Stokes equations to represent the effects of this region. The Finite Element Method (FEM) was the numerical method used, using a semi-Lagrangian method to discretize the derivative material and the Galerkin approximation to discretize the other terms in the spatial domain. After all, it is necessary to verify if the code provides results consistent with reality. In order to do that, it is simulated cases in which the results are well established in the literature, making it possible to compare between code and literature results and to verify the results consistency. This verification shows that the code is highly reliable.
Keywords
Finite Element Method, Diesel Particulate Filter, Darcy-Forchheimer, Semi-Lagrangian, Porous media
