The joining can either be performed interactively or

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The joining can either be performed interactively or automatically for all lines. The line order for joining can be selected based on the order in the line file or based on the order of an arbitrary database column. bñéçêí Exports the boundary conditions into files. léíáçåë Head boundary conditions: Head boundary conditions can be input using differ- ent units: • Hydraulic head [m] • Pressure [kPa] • Seepage face [m] • Saltwater head [m] • Saturation [1] • Moisture content[1] The values are converted into (freshwater) head [m] at input according to the properties of the model, e.g., the parametric relationship for unsaturated conditions or the maximum salt concentration in the model. Using the seepage face condition, a hydraulic head equal to the nodal elevation is set in combination with a con- straint condition allowing outflow only. Flux and Transfer boundary conditions: Are only important for flux and transfer boundary conditions in a certain context. Values of flux and transfer can be treated as area-independent, which means that the discharge varies with the cross-sectional area of the effective aquifer, or treated as depth-inte- grated where a varying cross-sectional area does not affect the quantity of the discharge. For unsaturated flow the flux boundary condition can differ between flux-type and gradient-type conditions. The latter is useful to formulate free drainage boundary conditions. Well boundary conditions: Wells can be either input node by node or as multi- layered wells using a special input dialog. `çåîÉêí Changes type and attributes of boundary conditions, for example, you can convert flux boundaries to trans- fer boundaries. Note that the values remain constant but the units change.
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RU ö rëÉêÛë j~åì~ä J m~êí f RK mêçÄäÉã bÇáíçê RKU cäçï j~íÉêá~äë The submenu items explained in this section are used to enter the material conditions for the flow equa- tions. The specific material requirements depend on the problem dimensionality and projection type for 2D problems (horizontal, vertical, axisymmetric) as selected in the Problem class menu. Note that these items imply different meanings for the Tools button, which can be set either to Assign , Join , Copy , Show , Vanish, Debug , T-List, Special or Options . The Assign tool is the default. It allows the assignment of material- parameter values necessary for describing the selected problem type. For more detailed information about these tools see Section 5.6. The required physi- cal units of each mate- rial parameter are indi- cated in the Keyboard request box. The input follows the same steps as outlined above for initial conditions. In addition to the standard Flow data tools described in Section 5.6, the following tools are available: ^ëëáÖå Time-dependent material data can be regionalized using the ’Database’ option either from power func- tions at specified locations or from a database contain- ing the values for each time step in a column. See online help for a detailed description.
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