In site combustion is a very complex proces which takes place in irregular porous structures not accessible by conventional computational fluid dynamics tools. After the process and the goveming equations have been presented the numerical method used to solve this problem is briefly introduced. The Lattice Boltzmann method is perfectly suited for fluid flow simulations in irregular structures. A multi channel geometry is considered to show the ability of the Lattice Boltzmann method to deal with fluid flow and heat transfer problems occurring in combustion processes. Finally results of the simulation of an in site combustion in an irregular porous structure are presented.


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