Numerical simulation of flame propagation of aluminum powder combustion based on Euler-Lagrange method
LI Ren-liang
LIU Xiao-fang
Abstract：The open-source computational fluid dynamics program OpenFOAM was used to establish a combustion model of aluminum powder within the Euler-Lagrangian framework.This model considers processes such as interphase heat transfer,phase change,heterogeneous surface reactions,evaporation,and gas-phase reactions.The simulation results of the tubular flame are compared with experimental data,and a detailed analysis of the flame structure during the propagation of the tubular flame is conducted,simulating micrometer-sized aluminum particles of different particle sizes.The results show that the model has a good ability to predict flame speed.The flame speed is more sensitive to oxygen concentration,increasing with the increase of equivalence ratio under oxygen-rich conditions;under oxygen-lean conditions,the flame speed remains almost constant.An increase in the particle size of micrometer-sized aluminum particles leads to a decrease in flame speed and an increase in flame thickness.
Keywords：aluminium burningflame velocityheterogeneous reactiondust combustionflame structure
Publication Date：2024-11-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 64-68 )