EPA Science Inventory

Numerical Modeling of One-Dimensional Steady-State Flow and Contaminant Transport in a Horizontally Heterogeneous Unconfined Aquifer with an Uneven Base

Citation:

Gorokhovski, V. M. AND J. W. WEAVER. Numerical Modeling of One-Dimensional Steady-State Flow and Contaminant Transport in a Horizontally Heterogeneous Unconfined Aquifer with an Uneven Base. Presented at American Geophysical Union Fall Meeting, San Francisco, CA, December 15 - 19, 2008.

Description:

Algorithms and a short description of the D1_Flow program for numerical modeling of one-dimensional steady-state flow in horizontally heterogeneous aquifers with uneven sloping bases are presented. The algorithms are based on the Dupuit-Forchheimer approximations. The program permits evaluation of water table elevations, tracking streamlines, delineating bounds of contaminant plume, and estimating advective travel times. The D1_Flow program was tested against three types of analytical solutions, data from the Borden Landfill, and results obtained by the two-dimensional model used on the landfill previously. The program yielded results practically coinciding with each of these. With its flexible boundary conditions and rapid execution, the code can form a suitable basis for a plume diving calculation and be integrated into a site assessment.

Purpose/Objective:

The scientific objective of this task is to develop a multicomponent approach to subsurface modeling that has applicability to a variety of problems.

URLs/Downloads:

WEAVER 08 104.PDF   (PDF,NA pp, 10 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Start Date: 12/15/2008
Completion Date: 12/15/2008
Record Last Revised: 09/15/2008
Record Created: 09/02/2008
Record Released: 09/02/2008
OMB Category: Other
Record ID: 199004

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL EXPOSURE RESEARCH LAB

ECOSYSTEMS RESEARCH DIVISION

REGULATORY SUPPORT BRANCH