Age-Transport Boundary Conditions - Overview
In general, age-transport boundary conditions are similar to their counterparts in mass transport (see mass-transport boundary conditions).
The boundary conditions are named differently depending on what age species they refer to.
| Symbol | Boundary Condition | Short Description | Application |
|---|---|---|---|
 |
Fixed groundwater age |
Known groundwater age not equal to 0 [d] at inflowing boundary |
|
|
Fixed lifetime expectancy |
Known lifetime expectancy not equal to 0 [d] at outflowing boundary |
|
|
Fixed exit probability |
Typically exit probability of 1[-] at the outflowing boundary that is targeted |
|
|
Only 1st kind (Dirichlet) boundary
conditions are typically used for groundwater
age calculation. Other boundary condition types are supported
for expert applications, but now shown by default. They may be
added via the context menu of the corresponding age species entry
in the boundary conditions section of the |
