feflow_user_manual_classic.pdf

As an alternative to feplot you can use the gis

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As an alternative to FEPLOT you can use the GIS System ArcView from ESRI or the CAD system AutoCAD for plotting your results and for further anal- ysis of the resulting data. Model data can be exported in shape-file format ( *.shp ) or AutoCAD file format ( *.dxf ) using the Data Store Manager (DSM). For example, click Isolines - Fringes in the dark red square of the View results window. Choose the Configure button in the file-selection dialog to enter the DSM. Using the different tabs you can: • select the file format, • control the exported database items, • change units and, • define file permissions. Return to the file selector pushing the Close but- ton and store the file. Figure 10.18 The Data Store Manager (DSM).
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cbcilt SKM `ä~ëëáÅ ö NQN NMKP qÜÉ Oa jçÇÉä NMKPKS `çåÅäìëáçåë Ñçê íÜÉ Oa ãçÇÉä As the simulation reveals, both sites are potential contaminators of the wells. Obviously, the sewage plant is a stronger potential contaminator and seems to affect the two center wells. In contrast, the waste- deposit site seems to only influence the contaminant concentration of the mid-east well. Considering the fact that the contaminant plumes merge before arriving at the wells, it cannot be stated exactly which contamina- tor affects which well. To distinguish more clearly between the two sites it seems necessary to describe more realistically the com- plex hydrogeologic situation of the area. Specifically, we should attempt to solve the problem by creating a three-dimensional model of the study area as described in the next chapter. Figure 10.19 Visualization of the contaminant plumes in ArcView.
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NQO ö rëÉêÛë j~åì~ä J m~êí ff NMK qìíçêá~ä NMKQ qÜÉ Pa jçÇÉä In analyzing the results of the 2D model we found that both examined sites could be responsible for the groundwater pollution. To obtain more detailed results we now want to account for the complex geologic situ- ation by extending our previous 2-D model to the third dimension. For this tutorial we will create an uncon- fined, steady flow and steady transport problem. NMKQKN eçï íç ÖÉí íÜÉ Ç~í~ The input of stratigraphic information can be done via the same tools which you have used in the flow data menus. For transferring the stratigraphy to the 3D model in FEFLOW a conceptual model should be available. Often you get the basic information from borehole data. These data are used for creating vertical profiles and, finally, for the complete 3D conceptual model of the study area. NMKQKO píÉé N J aÉëáÖåáåÖ ëäáÅÉë ~åÇ ä~óÉêë Enter the Layer configurator via the Dimensions shell menu selecting the Three- dimensional (3D) command. The configuration of the layers and slices as well as the geometric relations are defined in the Layer con- figurator . You can enter the Layer configurator via the 3D-slice elevations menu of the Problem edi- tor , too. The geometry of a 3D model is built up by slices and layers (Figure 10.20).
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