Multiscale Thermo-Fluid Analysis of an Exhaust System at the Main-Flow and Filter Scales

Abstract

A typical exhaust system includes Diesel oxidation catalyst (DOC), which is for oxidizing the gas, and Diesel particulate filter (DPF), which is mainly for trapping the PM. Because these processes involve chemical reactions, the temperature inside the system is significant. Our objective here is to estimate the fluid temperature by thermo-fluid analysis. Here we use the space–time isogeometric analysis (ST-IGA).