pine needle

[SaharRasoulpour]

Following the discussion of #13130,
In my case, after a specific time, when the bed of pine needles reaches 600°C (which occurs at 45seconds in the middle of the simulation), I observe a "breathing" effect in the fire—where the temperature fluctuates as if the fire is inhaling and exhaling. How can I achieve a smoother, more gradual reduction in temperature within the bed? Which parameters and factors are essential to address this?

[rmcdermo]

First thing I would do is try the latest nightly build. We have recently implemented a new scheme for handling oxygen mass transfer in oxidative pyrolysis which may smooth out the effect you are seeing.

[SaharRasoulpour]

I will take it into consideration, but when I ran the USFS_Corsica sample case with my adjusted parameters and configuration, the aforementioned domain showed no fluctuations. However, with these adjustments, I encountered one problem: the peak temperature was lower than expected.