Title :
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
Abstract :
The thermodynamics of exhaust gas recirculation (EGR) coolers plays a very important role for reducing oxides of nitrogen (NOX) 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;
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
DOI :
10.1109/ASC-ICSC.2008.4675344
