HydroGeoSphere/Discrete Fractures

Default discrete fracture transport values
By default, all fracture zones (and elements) in the domain will be assigned default transport properties which are listed in Table 5.22:

The following instructions can be applied to discrete fractures, as discussed in Section 5.8.1, to modify the default transport parameters. For each instruction we will indicate its scope (i.e. .grok, .fprops). Recall that if an instruction is used in the prefix.grok file, it will affect the current set of chosen zones, while in a properties (e.g. .fprops) file, it will only affect the named material of which it is a part.

Longitudinal dispersivity
Scope: .grok .fprops
 * 1) val

Longitudinal dispersivity [L], similar to $${\alpha}_l$$ in Equation 2.97.
 * &bull; &bull; &bull;

Transverse dispersivity
Scope: .grok .fprops
 * 1) val Transverse dispersivity [L], similar to $${\alpha}_t$$ in Equation 2.97.
 * &bull; &bull; &bull;

Coupling dispersivity
Scope: .grok .oprops
 * 1) val Dispersivity value [L] to be applied during exchange between the overland flow and subsurface domains.

Default value is 0.0.
 * &bull; &bull; &bull;