feflow_user_manual_classic.pdf

The flow materials option displays a submenu for

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The Flow materials option displays a submenu for editing all material parameters necessary to desribe a saturated or unsaturated flow problem. Parameter val- ues can be set globally or locally. Local stationary or time-varying values can be assigned elementwise, by using a template, by kriging and Akima interpolation, or by extrapolation from databases. Figure 5.7 Slice distance modifier.
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cbcilt SKM `ä~ëëáÅ ö RN RKS cäçï fåáíá~äë RKS cäçï fåáíá~äë When Flow initials is selected from the Flow data menu, a submenu appears to specify initial conditions for flow. The following interactive, mouse-supported tools are available to enter, edit, and plot flow initials: ^ëëáÖå Manages the keyboard-controlled and mouse-based input of data and regionalization from databases. Choose from the following input types: Global - Uniform value for the whole model (2D) or the current slice (3D), Nodal - Specific value for mouse-selected single nodes, Elemental - Specific value for mouse-selected single elements, Rubberbox - Uniform value for an area marked by a rubber box, Database - Values from a database by regionaliza- tion (Figure 5.9). The databases can be ESRI Shape files, dBASE files or ASCII databases. Using ASCII databases you have to select the appropriate columns for the ( x , y )-coordinates and for the function value, or the data have to be pre- pared as so-called triplet files using the format: x- coord. y-coord. function-value . In the Flow initials menu you can regionalize sta- tionary data only, where the function value describes the constant value. In the Flow boundaries and Flow materials menus transient data can be regionalized, too. For examples please refer to the Demonstration Exer- cise book and the Tutorial (Section 10), or invoke the FEFLOW online Help hitting <F1>. `çéó Is mostly used for 3D problems. It copies flow ini- tial data from the current slice to other slices. Do not forget to assign flow initials to each slice, not just the top one! The Advanced option allows copying of an initial distribution to a reference distribution with a given identifier. Reference distributions can be used as a placeholder for data (see Section 5.10). For a detailed description of the different options see the online Help . qÜÉ ÅçåÅÉéíì~ä ÇÉëáÖå çÑ ~ää cäçï ~åÇ qê~åëéçêí a~í~ ãÉåìë áë íÜÉ ë~ãÉK e~îÉ ~ äççâ çå íÜÉ ÑçääçïáåÖ cäçï fåáíá~ä a~í~ ëÉÅíáçå Ñçê ÖÉíJ íáåÖ çîÉêîáÉï çÑ íÜÉ ã~áå ÑìåÅíáçåë çÑ íÜÉëÉ ãÉåìëK Items Tools Tools’ options Keyboard request box Figure 5.8 Flow Initials submenu. Mesh inspector Return Items
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RO ö rëÉêÛë j~åì~ä J m~êí f RK mêçÄäÉã bÇáíçê gçáå Allows you to use ASCII or Shape file polygons, or FEFLOW supermeshes, as templates. You can interac- tively set values for each subarea, interpolate triplet files on selected subareas or import a value for each subarea automatically by linking the ID of the subarea
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