Addition of simultaneous heat and solute transport and variable fluid viscosity to SEAWAT

SEAWAT is a finite-difference computer code designed to simulate coupled variable-density ground water flow and solute transport. This paper describes a new version of SEAWAT that adds the ability to simultaneously model energy and solute transport. This is necessary for simulating the transport of heat and salinity in coastal aquifers for example. This work extends the equation of state for fluid density to vary as a function of temperature and/or solute concentration. The program has also been modified to represent the effects of variable fluid viscosity as a function of temperature and/or concentration. The viscosity mechanism is verified against an analytical solution, and a test of temperature-dependent viscosity is provided. Finally, the classic Henry-Hilleke problem is solved with the new code.

[1]  Paul P. Wang,et al.  MT3DMS: A Modular Three-Dimensional Multispecies Transport Model for Simulation of Advection, Dispersion, and Chemical Reactions of Contaminants in Groundwater Systems; Documentation and User's Guide , 1999 .

[2]  G. Marsily.  Quantitative Hydrogeology: Groundwater Hydrology for Engineers , 1986 .

[3]  Olaf Kolditz,et al.  Coupled groundwater flow and transport: 2. Thermohaline and 3D convection systems , 1998 .

[4]  A. Bejan,et al.  Convection in Porous Media , 1992 .

[5]  E. Holzbecher.  Modeling Density-Driven Flow in Porous Media , 1998 .

[6]  H. R. Henry,et al.  Exploration of multiphase fluid flow in a saline aquifer system affected by geothermal heating. (Final report) , 1972 .

[7]  Thomas J. Ahrens,et al.  Rock physics & phase relations : a handbook of physical constants , 1995 .

[8]  Kenneth L. Kipp,et al.  HST3D; a computer code for simulation of heat and solute transport in three-dimensional ground-water flow systems , 1987 .

[9]  Arlen W. Harbaugh,et al.  MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model - User Guide to Modularization Concepts and the Ground-Water Flow Process , 2000 .

[10]  O. Kolditz,et al.  Coupled groundwater flow and transport : 1. Verification of variable density flow and transport models , 1998 .

[11]  C. Voss,et al.  SUTRA (Saturated-Unsaturated Transport). A Finite-Element Simulation Model for Saturated-Unsaturated, Fluid-Density-Dependent Ground-Water Flow with Energy Transport or Chemically-Reactive Single-Species Solute Transport. , 1984 .

[12]  Christian D. Langevin,et al.  MODFLOW-2000, the U.S. Geological Survey Modular Ground-Water Model--Documentation of the SEAWAT-2000 Version with the Variable-Density Flow Process (VDF) and the Integrated MT3DMS Transport Process (IMT) , 2003 .

[13]  Thomas C. Harmon,et al.  Real‐time model parameter estimation for analyzing transport in porous media , 2005 .

[14]  D. Joseph,et al.  SUTRA-MS: A Version of SUTRA Modified to Simulate Heat and Multiple-Solute Transport , 2004 .

[15]  G. Wittum,et al.  The saltpool benchmark problem – numerical simulation of saltwater upconing in a porous medium , 2002 .