[Ksvicky]

Hello everyone!

I have been stuck with my pyrolysis cfd model since a year and I have been figuring out where I have misconfigured my model. It is a laminar eulerian multiphase model with two phases.

Phase 1: (Gas mixture) with Nitrogen at 6.7 Nl/min and pyrolysis products
Density:Ideal gas while the conductivity and viscosity are mass-weighted mix

Granular Phase 2: (solid mixture) with biomass and char at 1g/min
Density: volume-weighted while the conductivity and viscosity are mass-weighted mix.

I have chosen the granular temperature model as "phase property" with "syamlal obrien" models for viscosity and radial distribution while "algebraic" method for granular temperature.

The issue is that I have my model working fine thermally when i heat it to 500°C with physical contours of temperatures but however, my chemical reaction doesn't seem to react as it should for 500°C.

I had implemented my reactions onto the heterogenous reactions part of the multiphase model with its Arrhenius kinetic parameters.

Any insights or help would be greatly appreciated!