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Scientific Investigations Report 2009–5028

Application of SEAWAT to Select Variable-Density and Viscosity Problems

By Alyssa M. Dausman1, Christian D. Langevin1, Danny T. Thorne, Jr.2, and Michael C. Sukop3

1U.S. Geological Survey, Florida Water Science Center, Ft. Lauderdale, Florida
2Georgetown College, Georgetown, Kentucky
3Florida International University, Miami, Florida

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ABSTRACT

SEAWAT is a combined version of MODFLOW and MT3DMS, designed to simulate three-dimensional, variable-density, saturated groundwater flow. The most recent version of the SEAWAT program, SEAWAT Version 4 (or SEAWAT_V4), supports equations of state for fluid density and viscosity. In SEAWAT_V4, fluid density can be calculated as a function of one or more MT3DMS species, and optionally, fluid pressure. Fluid viscosity is calculated as a function of one or more MT3DMS species, and the program also includes additional functions for representing the dependence of fluid viscosity on temperature.

This report documents testing of and experimentation with SEAWAT_V4 with six previously published problems that include various combinations of density-dependent flow due to temperature variations and/or concentration variations of one or more species. Some of the problems also include variations in viscosity that result from temperature differences in water and oil. Comparisons between the results of SEAWAT_V4 and other published results are generally consistent with one another, with minor differences considered acceptable.

First posted May 10, 2010

For additional information contact:
Alyssa Dausman
Phone: 954-377-5972
U.S Geological Survey
3110 SW 9th Avenue
Ft. Lauderdale, FL 33315
Main Office: 954-377-5900
http://fl.water.usgs.gov/

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Suggested citation:

Dausman, A.M., Langevin, C.D., Thorne, D.T., Jr., and Sukop, M.C., 2010, Application of SEAWAT to select variable-density and viscosity problems: U.S. Geological Survey Scientific Investigations Report 2009-5028, 31 p.



Contents

Abstract

Introduction

Purpose and Scope

Acknowledgments

Benchmark Problems

Problem 1: One-Dimensional Flow with Linearly Varying Viscosity Field

Problem 2: Two-Dimensional Oil Convection in Aluminum Foam

Problem 3: Horton-Rogers-Lapwood (HRL) Convection

Problem 4: Double-Diffusive Finger Convection

Problem 5: Elder Problem

Problem 6: Henry-Hilleke Problem

Summary and Conclusions

References Cited

Appendix


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