Coupled Formulation

Saturated porous media modeling

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Coupled (Saturated) Formulation

Use when pore pressure diffusion and effective stress feedback drive the response.

Checklist

• Drainage (pressure) boundaries are explicit.
• Permeability and compressibility are in credible ranges.
• Time step resolves diffusion time scales (verify with a simple benchmark).

What to compare in early verification

• Excess pore pressure dissipation trend.
• Settlement / volumetric strain vs time.
• Sensitivity to time step size.