Application of SEAWAT to select variable-density and viscosity problems

Dausman, Alyssa; Langevin, Christian D.; Thorne, Daniel T.; Sukop, Michael C.

doi:10.3133/sir20095028

Cited by 11 publications

(10 citation statements)

References 30 publications

(72 reference statements)

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“…The simulations did, however, result in circulatory ground water motion that was qualitatively consistent with the laboratory experiment. Hughes and Sanford (2004) and Dausman et al (2009) duplicated the numerical simulations of Henry and Hilleke using SUTRA-MS and SEA-WAT, respectively. The experiments of Henry and Hilleke are described by Henry and Kohout (1972), Henry and Hilleke (1972), and in the master's thesis of Hilleke (1972).…”

Section: Description Of the Henry-hilleke Laboratory Experimentsmentioning

confidence: 99%

“…Benchmark testing of the SEAWAT program for problems where density is a function of more than one species is limited because of a lack of analytical solutions, laboratory tests, and controlled field experiments. Thorne et al (2006) and Dausman et al (2009) present an intercode benchmarking test between SEAWAT and several other programs for coupled solute and heat transport problems. One test problem was originally formulated by Henry and Hilleke (1972) to test the Kohout (1965, 1967) hypothesis that convection in the Floridan Aquifer was being enhanced by temperature‐induced density gradients.…”

Section: Introductionmentioning

confidence: 99%

“…In this article, the Henry and Hilleke laboratory experiment is used to benchmark the multispecies transport features in SEAWAT Version 4. Successful benchmarking to nonmodel‐derived data from the laboratory experiment provides a better test of the physical processes represented in SEAWAT than the intercode comparison of the Henry and Hilleke numerical analysis (Thorne et al 2006; Dausman et al 2009). Agreement between model results and laboratory measurements confirms correct implementation of the unified solute and heat transport equation and demonstrates the ability of SEAWAT to simulate the effect of temperature and salinity variations on flow patterns.…”

Section: Introductionmentioning

confidence: 99%

“…Although intercode comparisons are not recommended as a formal method for assessing the accuracy of a program (Konikow et al 1997), the consistency between SEAWAT results and the other programs provided some assurance that the physical processes were implemented similarly in the different programs. Dausman et al (2009) also present a SEAWAT simulation of a double-diffusive laboratory experiment (Pringle et al 2002) in which mixing between a sucrose and sodium chloride solution resulted in complex density-driven finger convection. Hughes et al (2005) used this double-diffusive convection problem to benchmark a multispecies version of the SUTRA program called SUTRA-MS (Hughes and Sanford 2004).…”

Section: Introductionmentioning

confidence: 99%

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Solute and Heat Transport Model of the Henry and Hilleke Laboratory Experiment

Langevin

Dausman

Sukop³

2010

Groundwater

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SEAWAT is a coupled version of MODFLOW and MT3DMS designed to simulate variable-density ground water flow and solute transport. The most recent version of SEAWAT, called SEAWAT Version 4, includes new capabilities to represent simultaneous multispecies solute and heat transport. To test the new features in SEAWAT, the laboratory experiment of Henry and Hilleke (1972) was simulated. Henry and Hilleke used warm fresh water to recharge a large sand-filled glass tank. A cold salt water boundary was represented on one side. Adjustable heating pads were used to heat the bottom and left sides of the tank. In the laboratory experiment, Henry and Hilleke observed both salt water and fresh water flow systems separated by a narrow transition zone. After minor tuning of several input parameters with a parameter estimation program, results from the SEAWAT simulation show good agreement with the experiment. SEAWAT results suggest that heat loss to the room was more than expected by Henry and Hilleke, and that multiple thermal convection cells are the likely cause of the widened transition zone near the hot end of the tank. Other computer programs with similar capabilities may benefit from benchmark testing with the Henry and Hilleke laboratory experiment.

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Section: Description Of the Henry-hilleke Laboratory Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solute and Heat Transport Model of the Henry and Hilleke Laboratory Experiment

Langevin

Dausman

Sukop³

2010

Groundwater

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“…The application of SEAWAT to simulate heat transport has been verified by a number of bench mark problems and variable density and viscosity problems (Thorne et al ; Dausman et al ; Langevin et al ). In this article, we evaluate SEAWAT as simulator for heat transport under radial flow conditions, and point out some issues specific for heat transport.…”

Section: Introductionmentioning

confidence: 99%

SEAWAT‐Based Simulation of Axisymmetric Heat Transport

Vandenbohede¹,

Louwyck

Vlamynck

2013

Groundwater

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Simulation of heat transport has its applications in geothermal exploitation of aquifers and the analysis of temperature dependent chemical reactions. Under homogeneous conditions and in the absence of a regional hydraulic gradient, groundwater flow and heat transport from or to a well exhibit radial symmetry, and governing equations are reduced by one dimension (1D) which increases computational efficiency importantly. Solute transport codes can simulate heat transport and input parameters may be modified such that the Cartesian geometry can handle radial flow. In this article, SEAWAT is evaluated as simulator for heat transport under radial flow conditions. The 1971, 1D analytical solution of Gelhar and Collins is used to compare axisymmetric transport with retardation (i.e., as a result of thermal equilibrium between fluid and solid) and a large diffusion (conduction). It is shown that an axisymmetric simulation compares well with a fully three dimensional (3D) simulation of an aquifer thermal energy storage systems. The influence of grid discretization, solver parameters, and advection solution is illustrated. Because of the high diffusion to simulate conduction, convergence criterion for heat transport must be set much smaller (10(-10) ) than for solute transport (10(-6) ). Grid discretization should be considered carefully, in particular the subdivision of the screen interval. On the other hand, different methods to calculate the pumping or injection rate distribution over different nodes of a multilayer well lead to small differences only.

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Rebuttal to “The case of the Biscayne Bay and aquifer near Miami, Florida: density-driven flow of seawater or gravitationally driven discharge of deep saline groundwater?” by Weyer (Environ Earth Sci 2018, 77:1–16)

et al. 2018

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A recent paper by Weyer (Environ Earth Sci 2018, 77:1-16) challenges the widely accepted interpretation of groundwater heads and salinities in the coastal Biscayne aquifer near Miami, Florida, USA. Weyer (2018) suggests that the body of saltwater that underlies fresh groundwater just inland of the coast is not a recirculating wedge of seawater, but results instead from upward migration of deep saline groundwater driven by regional flow. Perhaps more significantly, Weyer (2018) also asserts that established hydrologic theory is fundamentally incorrect with respect to buoyancy. Instead of acting along the direction of gravity (that is, vertically), Weyer (2018) claims, buoyancy acts instead along the direction of the pressure gradient. As a result, Weyer (2018) considers currently available density-dependent groundwater flow and transport modeling codes, and the analyses based on them, to be in error. In this rebuttal, we clarify the inaccuracies in the main points of Weyer's (2018) paper. First, we explain that Weyer (2018) has misinterpreted observed equivalent freshwater heads in the Biscayne aquifer and that his alternative hypothesis concerning the source of the saltwater does not explain the observed salinities. Then, we review the established theory of buoyancy to identify the problem with Weyer's (2018) alternative theory. Finally, we present theory and cite successful benchmark simulations to affirm the suitability of currently available codes for modeling density-dependent groundwater flow and transport.

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Application of SEAWAT to select variable-density and viscosity problems

Cited by 11 publications

References 30 publications

Solute and Heat Transport Model of the Henry and Hilleke Laboratory Experiment

Solute and Heat Transport Model of the Henry and Hilleke Laboratory Experiment

SEAWAT‐Based Simulation of Axisymmetric Heat Transport

Rebuttal to “The case of the Biscayne Bay and aquifer near Miami, Florida: density-driven flow of seawater or gravitationally driven discharge of deep saline groundwater?” by Weyer (Environ Earth Sci 2018, 77:1–16)

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