| Boundary condition |
A prescribed value that forces the model, such as inflow or water depth at a node. |
| Conduit |
A hydraulic connection between two nodes. In OpenPNM this is a throat. |
| Courant number |
Stability-related control for time-step selection. |
| Flow rate |
Volumetric discharge through a conduit, usually in m^3/s. |
| Hydraulic head |
Elevation plus water depth. |
| Inflow node |
Node where water enters the model through a prescribed boundary. |
| Manning coefficient |
Roughness coefficient often used for open-channel flow. |
| Node |
A point in the network. In OpenPNM this is a pore. |
| Observation point |
A node where selected time series are recorded during simulation. |
| Observation recorder |
A configured group of observation points, variables, and recording interval. A simulation can use multiple recorders. |
| Outlet node |
Node where a water-depth or other outlet condition is prescribed. |
| Picard iteration |
Iterative nonlinear solve used within a time step. |
| Pore |
OpenPNM term for a network node. |
| Stationary simulation |
Simulation that advances until a steady hydraulic state is reached rather than stopping at a prescribed final time. |
| Throat |
OpenPNM term for a connection between two pores; openKARST treats this as a conduit. |
| Transient simulation |
Simulation that evolves through time until t_max. |
| Water depth |
Depth of water at a node, measured from the local conduit or channel base. |