Borehole Simulation Options

A 3D Borehole Simulation can be used to generate a (2D or 3D) hydraulic conductivity field for use in a groundwater model. The Borehole Simulation should be at least as large as the Zone feature being used to assign it as hydraulic conductivity input into the groundwater model. To use the Borehole Simulation for the entire model domain, assign it to a Zone that is the same size and shape as the model domain:
Conceptual Model Tools > Zones > Zone=DM

Borehole Simulation Result File

A borehole simulation result (.tp file extension) can be imported/uploaded by checking the box next to and clicking 'Import' to browse to the file location on your local machine.

The .tp file is contained in the .zip folder created when the user saves the latest TP model result:
Other Tools > SaveModel > TP Model Results

Within the downloaded .zip folder, the 'TPROGS_SIM_RESULT.dat' file should be renamed with a .tp file extension before attempting to upload as a Borehole Simulation Result File.

Flow Property

Transformation Options

There are two options for calculating the properties (e.g., horizontal conductivity, vertical conductivity, porosity, etc.) in each groundwater model cell based on the TP cell/3D grid system.

The first option, Nearest , assigns the properties of the TP cell located nearest to the groundwater model cell.

The 2nd option, Bilinear uses an average of the properties from surrounding TP cells to calculated the properties of the groundwater model cell.

For example, if one groundwater model cell contained two or more geologic model cells in the horizontal direction, the resulting horizontal conductivity of the groundwater cell was the arithmetic average of the horizontal conductivity values from the geologic model cells. If the groundwater cell contained two or more geologic model cells in the vertical direction, a harmonic average was utilized to calculate vertical conductivity for the groundwater model cell.

Number of Materials

By default, IGW-NET assumes there are 4 material types used in the Borehole simulation result file. Change the input value and click the 'Edit Material Property' button to update the number of materials listed in the Flow Property table (see next).

Flow Property Table

Kxx is the x- (west-to-east) direction horizontal conductivity assigned to the material ID

Kxx/Kyy is the horizontal anisotropy ratio of x-direction conductivity to y- (north-to-south) direction conductivity. The default value of 1 assumes no horizontal anisotropy is present.

Kxx/Kzz is the vertical anisotropy ratio of x-direction conductivity to z- (vertical) direction conductivity. The default value of 10 means that x-direction conductivity is assumed to be 10 times larger than the vertical anisotropy.

n is the effective porosity assigned to the material ID.

Sy is the specific yield assigned to the material ID. (This is used in the case that the TP cell is located in an unconfined layer of the groundwater model.)

Ss is the specific storage assigned to the material ID. (This is used in the case that the TP cell is located in an unconfined layer of the groundwater model.)