Export a Solid Model to a Groundwater Vistas Matrix File

Block models created in RockWorks can be used to define matrix properties in a Groundwater Vistas MODFLOW model. In order to do this, you need to:

create a Groundwater Vistas Model File (.gwv file) that falls inside the extents of your RockWorks project
create a Groundwater Vistas Discretization File (.disrw file) for import into RockWorks
make sure that the RockWorks solid model (*.RwMod) has been created

This document describes broadly the RockWorks menu settings. For a detailed description of the file types and how to generate them, please refer to the separate topic, Using RockWorks to Define Layer Elevations, Zones and Matrix Values in Groundwater Vistas.

Feature Level: RockWorks Basic and higher

Input
- Groundwater Vistas Discretization File: Click to the right to browse for the name of the Discretization file (.disrw) that you created in Groundwater Vistas.
- Solid Model: Click to the right to browse for the name of the RockWorks solid model (.RwMod file) that you want to use to define the matrix property in Groundwater Vistas.
Output: Groundwater Vistas Matrix File: Click to the right to enter a name for the file that RockWorks create. It will have a .RwMatrix file extension.
Averaging Method: If multiple blocks from the .RwMod file fall inside a MODFLOW model cell, the program will use this averaging method to assign a value to that cell. Choose from a number of different interpolation algorithms by clicking in its radio button.

This program requires that a RockWorks-format solid model already exists.

Select the ModOps | Solid | Export | Solid to GWV Matrix menu option.
Enter the requested menu options, described above.
Click the Continue button to create the .RwMatrix file.
In Groundwater Vistas, go to Props, and select the Property for which you want to import the Matrix data. Be sure that this parameter is defined as a matrix under the Props | Options menu.
Then, go to Props | Import | RockWorks Matrix file.
Choose the .RwMatrix file that you created above.

This will assign an averaged value to each cell for the Property that is current selected (as displayed in the image at the top of this topic).