Modeling and Simulation of Reaction-Diffusion-Heat Transfer Coupling on Gas-Solid Surface
QIU Tianhao1,2, LI Chengxiang1,3, GE Wei1,3
1. State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
3. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：To calculate the energy transfer and transformation and predict the change of solid temperature in gas-solid catalytic reaction and heat transfer process, a discrete-continuous coupling model of reaction-diffusion-heat transfer process was established by using the hard sphere-pseudo particle method. By simulating the gas-solid interaction under high temperature gas effect, the energy exchange mechanism at micro scale was revealed. The results showed that when the gas inflow temperature increased from 600 K to 4 200 K, the total heat flux on solid surface increased from 0.4 MW/m2 to 9.5 MW/m2, which increased up to 23-fold. The simulation could predict the heat flow and temperature distribution in solid under the complex gas-solid surface interactions, providing a feasible model and method for the study of the material surface reaction and heat transfer process at the nano-scale and micro-scale.
QIU Tianhao,LI Chengxiang,GE Wei. Modeling and Simulation of Reaction-Diffusion-Heat Transfer Coupling on Gas-Solid Surface[J]. Chemical Reaction Engineering and Technology, 2025, 41(1): 143-154.
