Incorporating Matrix Diffusion in the New MODFLOW Flow and Transport Models for Unstructured Grids
Abstract
The purpose of this effort was to implement the semi-analytic matrix diffusion method that was recently developed for the REMChlor-MD screening model in the next generation public domain MODFLOW groundwater flow and transport codes. The matrix diffusion method used in REMChlor-MD is a semianalytical technique based on a method originally used to model transient heat conduction during enhanced oil recovery and geothermal reservoir simulation. With some modifications this method has been demonstrated to work very well for modeling matrix diffusion in both fractured and heterogeneous systems. The semi-analytic matrix diffusion method was implemented as the MDT matrix diffusion package in the MODFLOW-USG Transport and MODFLOW 6 FORTRAN codes. The Aquaveo Groundwater Modeling System (GMS) graphical user interface has been modified to run the MODFLOW-USG Transport and MODFLOW 6 codes with the MDT package. A total of seven detailed tutorials have been developed to show users how to run the MDT package using GMS v.10.7 with both MODFLOW-USG and MODFLOW 6.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 2023
- Accession Number
- AD1223869
Entities
People
- Alan Lemon
- Ron Falta
- Shahla Farhat
- Sorab Panday
Organizations
- Clemson University
- GSI Environmental (United States)