Modeling Aluminum particle vaporization
Hello All,
I am trying to model the combustion of Aluminum particles in air. The first step is to vaporize the particles according to the equation Δc=(3Φ_s*ρ_s/τ)*(1+0.276*sqrt(Re)), which describes the interphase mass transfer rate. Something that I am trying to understand is, whether the heat of formation of Aluminum vapor should be added to added to/subtracted from the gas phase total energy, and why? Also, what about the total energy/internal energy for the particle phase? Does it not change? I am only talking about the effect of the heat of formation. I understand the changes in energy due to change in Kinetic energy and Pseudo Thermal Energy.
In order to make the problem description more clear, I am modeling the burning of Al in air inside a closed domain. So the vaporization occurs only due to either the burning of Al or some shock passing through the domain, etc., i.e., there is no external heating.
I would really appreciate it if someone can provide me with some insight on this.
Regards,
Swagnik
