CFD Analysis of the EGR Cooler’s Heat Transfer Performance

Abstract:

A CFD simulation of the performance of an EGR cooler was carried out. Considering the differences between the heat exchange process of its inlet portion, middle portion and outlet portion, this simulation divided the model into three parts and analyzed them in turn. For the inlet and outlet portion, the convective heat transfer model was applied; while for the middle portion, an air-solid-liquid three-phase heat transfer model, based on strong coupling was extracted. According to the geometry continuity of the model, the boundary conditions of the middle portion was determined by the simulation result of the inlet portion, and the boundary conditions of the outlet portion was determined by the simulation result of the middle portion. Ultimately, we can gain the overall temperature distribution of the EGR cooler under the premise of ensuring the accuracy of the heat transfer model and minimizing the computation. This model based on decomposition methods was applied to the temperature field simulation under different EGR cooler rate and the simulation results were in good agreement with the experimental results.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 309-315
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.309
• Online since: February 2014
• Authors: Zhi‘en Liu, Yu Xu*
• Keywords: EGR Cooler, Heat-Flux Coupling, Temperature Field

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