Storage Model
The Storage Model node adds Equation 8-2 and Equation 8-18 (excluding any mass sources). Use it to define the fluid and porous media properties, including a storage term for the specific storage.
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Fluid Properties
The settings are the same as for the Fluid and Matrix Properties node except a gas constant type is not required.
Matrix Properties
The settings are the same as in the Matrix Properties section under Fluid and Matrix Properties.
Storage Model
Select a Storage S (SI unit: 1/Pa) — Linearized storage (the default) or User defined.
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For User defined enter a value or expression for Storage S (SI unit: 1/Pa) (Sf in Equation 8-7).
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For Linearized storage it uses the following linear equation to define the storage:
This is equivalent to the Reuss average of the fluid and solid compressibilities. Enter the value or expression for each of the following:
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Compressibility of fluid χf (SI unit: 1/Pa). The default uses values From material. For User defined, the default is 4·10−10 1/Pa.
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Effective compressibility of matrix χp (SI unit: 1/Pa). The default is 1·10−4 1/Pa).
Fracture Flow
For the Fracture Flow Interface, enter a value or expression for the Fracture thickness df (SI unit: m). The default is 0.1 m.
Discrete Fracture: Application Library path Subsurface_Flow_Module/Fluid_Flow/discrete_fracture