[nitz5]

hi everyone,
(a) I am not sure...does the reaction's order in gasification problems have any importance?
if yes then can you suggest me the order given in the pic below
reactions.JPG


(b) also, currently I am having issues with convergence and under-relaxation factors. just see the pattern, i have reduced it to 0.6 and tried but still didnt converged...then i improved mess quality but still facing the same problem. just see the snapshot below
convergence.jpg

(c) please suggest me how to get solution converge and approx time & no.of iteration required and what to PATCH if any?

(d) the max temprature should be around 1200K but during itration it starts roughly from 7500K and at the end of iteration and patching it comes to around 350K. so please tell me what I might be doing wrong?

geometry
MAIN_GEOMETRY.jpg

meshing
MAIN_MESHING.jpg

any suggestions are welcome!