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| {{FEMWATER Links}}
| | #redirect [[GMS:Building_a_FEMWATER_Model#Build_a_3D_Finite_Element_Mesh]] |
| Once the FEMWATER conceptual model is constructed, the next step is to use the conceptual model to build a 3D finite element mesh. This is accomplished by first building a 2D mesh, then building the 3D mesh by extruding each of the 2D elements in 3D elements.
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| ===Map → 2D Mesh===
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| The first step in building the 3D mesh is to select the [[GMS:Map to Modules#Map to 2D Mesh|'''Map → 2D Mesh''']] command in the ''Feature Objects'' menu. This command creates a 2D mesh by automatically filling in the interior of the conceptual model with nodes and elements. The size and spacing of the elements is controlled by the spacing of the vertices on the arcs and by the refine point attribute assigned to any wells in the interior of the conceptual model.
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| An example of the '''Map → 2D Mesh''' command is shown in the following figure. A sample FEMWATER conceptual model is shown in part a. The 2D mesh resulting from execution of the '''Map → 2D Mesh''' command is shown in part b.
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| <gallery widths="200p" heights="150px">
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| File:Samp map.png| Converting a FEMWATER conceptual model: conceptual model
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| File:Topo.png|Converting a FEMWATER conceptual model: 2D mesh created with '''Map → 2D Mesh''' command
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| File:Hor TINs.png|Converting a FEMWATER conceptual model: TINs created from the 2D mesh
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| File:Hor 3DMesh.png|Converting a FEMWATER conceptual model: 3D mesh created from TINs
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| Image:meshgenc.png|Converting a FEMWATER conceptual model: 3D mesh after running FEMWATER
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| </gallery>
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| ===Creating the 3D Elements===
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| Once the 2D mesh is created, the next step is to create the 3D mesh by extruding each of the 2D elements into a series of 3D elements. The elevations of the 3D elements can be defined from a set of boreholes, a set of TINs, or a set of Solids.
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| For sites with relatively simple stratigraphy, the [[GMS:Converting Borehole Data|'''Regions → 3D Mesh''']] command in the Borehole module can be used.
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| For sites with more complex stratigraphy, the Fill Between [[GMS:TIN Module#Building Solids and 3D Meshes with TINs|'''TINs → 3D Mesh''']] command in the TIN module should be used.
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| A mesh can also be created using the [[GMS:Solids to Layered Mesh|'''Solids → Layered Mesh''']] command in the Solid module.
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| {{Navbox GMS}}
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| [[Category:FEMWATER]]
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| [[Category:3D Mesh]]
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