Thermodynamic simulation of exhaust gas recirculation coolers used on diesels based on finite element method

Author

Wang, Yansong ; Tang, Xiaolin ; He, Hui

Author_Institution

Res. Center of Automotive Eng., Liaoning Univ. of Technol., Jinzhou

fYear

2008

fDate

10-12 Oct. 2008

Firstpage

141

Lastpage

145

Abstract

The thermodynamics of exhaust gas recirculation (EGR) coolers plays a very important role for reducing oxides of nitrogen (NO_X) emissions of diesel engines. Using the ANSYS software, some fluid thermodynamic models of EGR coolers were established by using the finite element method (FEM); and the temperature fields of gas fluids in the EGR coolers were simulated and verified by comparing the experimental results from some literatures. Based on the FEM models, furthermore, cooling efficiencies of the EGR coolers with different diffuser structures and different numbers of cooling tubes were analyzed and discussed. The comparison results show that, for the same dimension of EGR coolers, their cooling efficiencies can be increased up to five or thirteen percents by replacing their column diffusers with cone diffusers or by properly selecting the tube numbers of the EGR coolers.

Keywords

diesel engines; finite element analysis; flow simulation; heat transfer; mechanical engineering computing; ANSYS software; FEM; diesel engines; diffuser structures; exhaust gas recirculation coolers; finite element method; fluid thermodynamic models; nitrogen oxides emissions; thermodynamic simulation; Combustion; Computational fluid dynamics; Cooling; Diesel engines; Equations; Finite element methods; Gases; Helium; Temperature; Thermodynamics;

fLanguage

English

Publisher

ieee

Conference_Titel

System Simulation and Scientific Computing, 2008. ICSC 2008. Asia Simulation Conference - 7th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-1786-5

Electronic_ISBN

978-1-4244-1787-2

Type

conf

DOI

10.1109/ASC-ICSC.2008.4675344

Filename

4675344