Theory Manual Version 3.4
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Subsubsection 3.4.7.1: Virtual Work and Linearization Up Subsection 3.4.7: Chemical Reactions Section 3.5: Computational Fluid Dynamics

#### 3.4.7.2 Updating Solid-Bound Molecule Concentrations

The solid-bound molecule concentrations are evaluated at integration points of each element; they do not represent nodal degrees of freedom. The values of are updated at the end of each iteration in the solution of the nonlinear equations for the nodal degrees of freedom, using trapezoidal integration on in (2.10.1-1). According to (2.10.4-1) and (2.10.4-3), we have , which is evaluated as the average of values at and , then where .
Subsubsection 3.4.7.1: Virtual Work and Linearization Up Subsection 3.4.7: Chemical Reactions Section 3.5: Computational Fluid Dynamics