Hydrate Inhibitor Mass Conservation Equation

The hydrate inhibitor mass conservation equation implemented in STOMP-HYDT-KE equates the time rate of change of inhibitor (salt) mass within a control volume with the flux of inhibitor mass crossing the control volume surface. Inhibitor (s) is assumed to only exist dissolved in the aqueous phase (l) and precipitated (p), as reflected in its conservation of mass equation;

where inhibitor flux is a combination of advection and diffusion-dispersion through the aqueous phase

where V is the Darcy velocity

and