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Subsubsection 4.8.2.6: Referentially Transversely Isotropic Permeability Up Section 4.8: Biphasic Materials Subsubsection 4.8.3.1: Starling Equation

### 4.8.3 Fluid Supply Materials

Fluid supply materials may be used to simulate an external source of fluid, such as supply from microvasculature that is not modeled explicitly. The fluid supply term, , appears in the mass balance relation for the mixture, has units of reciprocal time [t]; it represents the rate at which the volume fraction of fluid changes with time.

Subsubsection 4.8.2.6: Referentially Transversely Isotropic Permeability Up Section 4.8: Biphasic Materials Subsubsection 4.8.3.1: Starling Equation