How to select ROP_S or RO_S

MFiX
1

I would like to know whether rop_s or ro_s should be used in the reaction rate setting of biomass pyrolysis. Are the Settings in the variable density case correct?Looking forward to your reply, thank you!
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1 Like
2

It should be ROP_s . ROP_s is the bulk density (product of density RO_s times the solids volume fraction. If you use ROP_s, the concentration will be zero if there are no solids in the cell (because the solids fraction is zero). If you use RO_s, you may compute a non-zero concentration even if there is no solids.

3

Thank you very much for your reply!