Importing from CVLGrid

CVLGrid is 2D grid generation software developed by DSI for use with curvilinear orthogonal models, and in particular for use with EFDCPlus/EFDC_DSI, EFDC_SGZ, EFDC_EPA, and EFDC_Hydro models. As all EFDC models require 2D curvilinear orthogonal grids this tool has been developed to meet this need for DSI and our clients and customers. This tool has been further optimized for use with the EFDC_DSI/EFDC_Explorer Modeling System. CVLGrid can be used to refine and modify existing grids and if the I, J map is not changed then model can be loaded back into EE without needing to update the boundary conditions settings. 

In EE main form, the user should click Generate New Model button (), and the Generate EFDC Model form will appear as shown in Figure 1. In the Grid Type frame, the user selects the CVLGrid option and then clicks Browse button on the right as shown in Figure 1 to browse to the CVLGrid grid file.

Figure 1 Generate EFDC Model form.

After clicking the Browse button, the Import a CVLGrid Node File form will appear to allow the user to select CVLGrid grid file. A CVLGrid grid file has extension .CVL. CVLGrid project files, which CVLGrid uses to save the splines, overlays and background maps, has the extension .CVP. EE only opens .CVL extension files. Click the Open button as shown in Figure 2 and the Generate button on the Generate EFDC Model form will be enabled. If this is not enabled then some information is lacking so that EE cannot generate the grid. The user should check that grid has been properly loaded if this is the case.

Figure 2 Import CVLGrid file form.

The user should then click the Generate button to generate an EFDC model as shown in Figure 3. A message will appear to inform the user that an EFDC model has been created with the number of grid cells as shown in Figure 4. Click OK button and the EFDC model with grid map will be generated as show in Figure 5. The user is now ready set the initial and boundary conditions for the model as outlined in the Model Generation Process page.

Figure 3 Selected CVLGrid file form.

Figure 4 EE Informing message form.

Figure 5 A EFDC Model generated on EE main form.