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Simulation of Heat Transport in Fractured, Single-Phase Geothermal Reservoirs

Description: Although many geothermal reservoirs depend upon fracture permeability to obtain adequate mass flows, relatively little research effort has been directed toward fractured reservoir simulation. This paper outlines the mathematical apparatus necessary to develop a numerical simulator for a fractured, single-phase geothermal reservoir. It is assumed that he fracturing is extensive and well-distributed (though not necessarily uniform) so that it is reasonable to consider a superficial discharge thro… more
Date: December 1, 1976
Creator: Gray, William G.; O'Neill, Kevin & Pinder, George F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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On the Inclusion of the Interfacial Area Between Phases in the Physical and Mathematical Description of Subsurface Multiphase Flow

Description: The mathematical description of multiphase flow and transport in the subsurface should be based on conservation principles. In practice, however, equations used for modeling multiphase flow are actually obtained by starting with the single fluid equation and then enhancing the simple empirical coefficients that arise with complex functional dependences. These manipulations are also supplemented by equilibrium expressions for capillary pressure as a function of saturation that is equal to the pr… more
Date: June 1999
Creator: Gray, William G.; Tompson, Andrew & Soll, Wendy E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Inclusion of the Interfacial Area Between Phases in the Physical and Mathematical Description of Subsurface Multiphase Flow

Description: The scientific motivation for conducting this research lies in an assessment of the current state of modeling in the subsurface, where ''modeling'' refers to any systematic framework used to gain understanding of a system. At present, subsurface modeling addresses only the phases present, and even there considers the modeling process to be an extension of single phase flow. The shortcoming of this approach is that the governing flow equations do not account for some of the important physical ph… more
Date: March 17, 2000
Creator: Gray, William G.; Soll, Wendy E. & Tompson, Andrew F.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the inclusion of the interfacial area between phases in the physical and mathematical description of subsurface multiphase flow. 1998 annual progress report

Description: 'Improved capabilities for modeling multiphase flow in the subsurface requires that several aspects of the system which impact the flow and transport processes be more properly accounted for. A distinguishing feature of multiphase flow in comparison to single phase flow is the existence of interfaces between fluids. At the microscopic (pore) scale, these interfaces are known to influence system behavior by supporting non-zero stresses such that the pressures in adjacent phases are not equal. In… more
Date: June 1, 1998
Creator: Gray, William G.; Tompson, Andrew (Andy) & Soll, Wendy E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanistic Process Modeling for Subsurface Remediation

Description: The goal of this project was to develop the first generation of models that fully address the coupling of dominant processes controlling the behavior of fluid, chemical and biological components in the subsurface. The large memory and computational performance of multiprocessor computing architectures would be exploited to provide modeling capabilities with unprecedented process detail and resolution to assess new scientific hypotheses, assist with experimental design, and to evaluate environme… more
Date: August 30, 2002
Creator: Yabusaki, Steven B.; Bryant, Steven L.; Chen, Shi-Yi; Fann, George I.; Flach, Gregory P.; Gray, William G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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