7.3.6 Solid Deposition Reactions

The deposition reaction of a solid species on a particle can be modeled with the following assumptions:

The theoretical analysis and Equations  7.3-4- 7.3-10 are applied for the surface reaction rate calculation, with the mass fraction of the surface species set to unity in Equations  7.3-4, 7.3-8, and 7.3-9.

In ANSYS FLUENT, for the particle surface species to be deposited on a particle, a finite mass of the species must already exist in the particle. This allows for activation of the deposition reaction selectively to particular injection particles. It follows that, to initiate the solid species deposition reaction on a particle, the particle must be defined in the Set Injection Properties dialog box (or Set Multiple Injection Properties dialog box) to contain a small mass fraction of the solid species to be deposited. For details on defining the particle surface species mass fractions, see this section in the separate User's Guide.