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14.2.1 Overview of Surface Species and Wall Surface Reactions

FLUENT treats chemical species deposited on surfaces as distinct from the same chemical species in the gas. Similarly, reactions involving surface deposition are defined as distinct surface reactions and hence treated differently than bulk phase reactions involving the same chemical species.

Surface reactions can be limited so that they occur on only some of the wall boundaries (while the other wall boundaries remain free of surface reaction). The surface reaction rate is defined and computed per unit surface area, in contrast to the fluid-phase reactions, which are based on unit volume.

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