GGSD Program Details for JDB2D-3D

JDB2D-3D

Category	Groundwater flow (3D)
Publisher	US Geological Survey
Platform	DOS
Status	Public domain
Description	JDB2D-3D consists of two fairly simple, modifiable programs for solving the 2D, single-aquifer (JDB2D) and quasi-3D, multi-aquifer (JDB3D) formulation of the transient ground-water flow equation for confined and leaky-confined aquifer systems. The governing equations are approximated using central finite differences for the spatial derivative together with a block-centred formulation. The finite difference equations are solved using the Strongly Implicit Procedure (SIP). The code solves the equations independent of units, allowing the user to specify any consistent units. The model requires a no-flow boundary around the area of computational interest, and source functions are used to approximate boundary conditions other than no-flow. Input is developed by using a text editor. Output files include text files with input data and results, and a file with locations and computed heads for graphic post-processing.
Cost	US Dollars 50
Data formats supported	None stated
Supplier in United States of America	International Ground Water Modeling Center