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Simulation lasts 30 years

Specify domain’s starting fluid composition on the Initial pane. Aquifer is 70% Quartz . Initial fluid in equilibrium with Quartz. Simulation lasts 30 years. You enable kinetic reactions on the Reactants pane. Mass already specified on Initial pane. Specific surface area.

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Simulation lasts 30 years

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  1. Specify domain’s starting fluid composition on the Initial pane Aquifer is 70% Quartz Initial fluid in equilibrium with Quartz Simulation lasts 30 years

  2. You enable kinetic reactions on the Reactants pane. Mass already specified on Initial pane Specific surface area You can also… Add promoting or inhibiting species add → Kinetic → Mineral… Use Arrhenius equation for polythermal runs Supply a nucleus density, critical S.I., cross-affinity terms, etc.

  3. Inlet fluid enters the domain from t = 0 to 30 years SiO2(aq) concentration in inlet fluid undersaturated with respect to Quartz

  4. Specify domain size, gridding, and flow rate on the Domain pane. Domain is 100 m long, divided into 400 nodal blocks Pore fluid in aquifer displaced 100 times

  5. Set various mass transport properties on the Medium pane. No value set, so porosity calculated from volume of equilibrium minerals: 70% Quartz → 30% pore space. Run → Go traces the model

  6. SiO2(aq) concentration approaches Quartz equilibrium value. Inlet fluid is undersaturated with respect to Quartz.

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