Solid combustion problem....
I have a problem about solid combusiton. I am wondering if Fluent can deal with it or not. Here is the problem:
A diffusion flame exists over a solid fuel. The heat transfer between the diffusion flame and solid fuel should be considered. The solid fuel vapor is pyrolyzed (vaporized) from solid surface and the pyrolysis rate is a function of solid surface temperature. It can assmue that the degression of solid fuel surface can be ignored.
According to my trials on FRUENT, I can not set the fuel mass flux from "solid surface". Does anyone have comment on this or know what model I should use?
Thanks in advance.
Which multiphase model are you using to define your problem.
i guess, Euler-granular model will be helpful for your purpose.
To define pyrolysed species you need to define pseudo species from material panel, and then use Macro, DEFINE_MASS_TRANSFER to release pyrolysed products from pseudo species to gas (primary)phase.
i hope this will help you.
Thank you for your reply.
I will try the model and the Macro you suggested.
Currently, I use a pyrolysis layer over the solid surfcace, which is very thin, and set it as porous medium, so I can apply source Macros on the porous region. FYI.
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