January 28, 2024 at 6:02 pm
ll00023
Subscriber

particle material's swelling coefficient is set as constant 1.4. 50*1.4=70. That's why the diameter increases.

why it decreases? 

"To allow a more adequate description of the char particle size (and hence density) variation during combustion, you can specify the burning mode $\alpha$, relating the char particle diameter to the fractional degree of burnout"

I didn't find this in FLUENT.