Numerical Simulation Analysis of High Temperature Heat Exchange Module

• Main Authors: Hsu, Wei-Chieh, 許威傑
• Other Authors: Tsai, Chien-Hsiung
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/x8wcg4

碩士 === 國立屏東科技大學 === 車輛工程系所 === 105 === In this study,CFD (Computational Fluid Dynamics) ANSYS / FLUENT software is used to establish a high temperature regenerative combustion system of the regenerator heat flow simulation analysis module and gradually accumulate the design parameters of the regenerator database to provide domestic industry process regenerative combustion system custom design capabilities. It is accurate method to simulate and design a regenerator module with CFD. However, due to the large number of meshes, it is impossible to simulate the full-size regenerator module. The solution of this study use the porous medium model instead of the regenerator, not only building is simple, but also can significantly reduce the calculation time, and porous medium coefficient (convection coefficient and friction coefficient )can be obtained by CFD numerical experiments. Results of the study, porous medium model can replace the real model, and the maximum error is within 7%. When the high temperature exhaust gas and fresh air enter the heat storage tank, the flow field is not uniform. As the gap increases, the temperature efficiency and waste heat recovery rate are lower.