Particle temperature variation

Hello, I have simulated the exothermic reaction of CAO and CO2 and the decomposition cycle reaction of cacO3. When I deal with the temperature change of particles, I find that the temperature of particles is decreasing. My understanding is that the decomposition cycle reaction of cao, CO2 and cacO3 should be exothermic first and then endothermic, and the temperature should be increased first and then decreased. So what’s the reason for this.thanks.


cao-co2-dem-2d_2022-09-25T173704.381104.zip (4.6 MB)