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Calcite Growth and Dissolution Modeling: Flow-Driven Simulations

Explore computer simulations of Calcite growth and dissolution in Earth Sciences using DLA approximation, heterogeneous nucleation, and flow conditions. Witness the aggregation of calcium carbonate in a flow path, where precipitation halts as acidity increases, leading to dissolution from sparse dendrite areas towards the nucleus.

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Calcite Growth and Dissolution Modeling: Flow-Driven Simulations

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  1. Modeling Calcite Growth and Dissolution By Taylor Hildreth EPS 109: Computer Simulations in Earth Sciences

  2. Methods • DLA – approximating both CaCO3 and H2CO3 molecules in solution. • Heterogeneous nucleation • The ions in solution are under flow conditions and mostly move from right to left (with components if both up and down motion approximating semi-turbulent flow). • Boundary conditions are reflective on both the x-axis and top boundary. • Ions reaching the y-axis do not react with the system.

  3. Movie The GIF shows the calcium carbonate aggregating in the flow path. Once the flowing fluid becomes acidic, precipitation ceases, and dissolution occurs preferentially from the least dense areas of the dendrites towards the nucleation surface.

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