Select All to apply the core consumption reactions for all available pellets types. Or, select one of the pellet types in the list.
In the Core species reaction rate table, select the reaction rate (SI unit: mol/(m
2·s)) for solid species under the column
Surface reaction rate. Select the
Define variables for porous pellets check box in the
Pellet Chemistry section to couple the reaction rate to the chemistry. With
User defined selected from the column
Surface reaction rate, enter a reaction-rate expression in the column
Surface rate expression (mol/(m^2*s)).
Select bulk species reaction rate (or molar flux, SI unit: mol/(m
2·s)) for bulk species
i from the
Jpe, i list. The reaction rate can be picked up from the chemistry by selecting the
Define variables for porous pellets check box. Enter a reaction-rate expression when
User defined is selected from the list.
Specify the Heat source (Qs
Rc) evolved from core surface reactions. When multiple pellets types are present, all respective heat source are included.
The heat sources are most conveniently picked up from a surface reaction in a Chemistry interface (with the Define variables for porous pellets selected in the
Pellet Chemistry section). In that case, the heat source expression can be selected from the list. Otherwise, you can enter an expression in the text field.