GMS:UTCHEM: Difference between revisions
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__NOINDEX__ | |||
{{Infobox Model | | {{Infobox Model | | ||
|name= UTCHEM | |name= UTCHEM | ||
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|tutorials= [[GMS:Tutorials#Models|UTCHEM Tutorials]] | |tutorials= [[GMS:Tutorials#Models|UTCHEM Tutorials]] | ||
}} | }} | ||
{{GMS Deprecated Feature}} | |||
GMS includes an interface to the UTCHEM model in the 3D grid module. UTCHEM is a multi-phase flow and transport model developed by the Center for Petroleum and Geosystems Engineering at the University of Texas at Austin. UTCHEM is ideally suited for pump and treat simulations, particularly the simulation of surfactant-enhanced aquifer remediation (SEAR). | GMS includes an interface to the UTCHEM model in the 3D grid module. UTCHEM is a multi-phase flow and transport model developed by the Center for Petroleum and Geosystems Engineering at the University of Texas at Austin. UTCHEM is ideally suited for pump and treat simulations, particularly the simulation of surfactant-enhanced aquifer remediation (SEAR). | ||
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UTCHEM is designed for problems with simple geometry and boundary conditions. GMS currently includes no conceptual model for UTCHEM and properties are changed on a cell-by-cell basis. Steps to create a UTCHEM model include: | UTCHEM is designed for problems with simple geometry and boundary conditions. GMS currently includes no conceptual model for UTCHEM and properties are changed on a cell-by-cell basis. Steps to create a UTCHEM model include: | ||
#'''Create a 3D grid''' – Before building a UTCHEM simulation, a cell-centered 3D grid must be created which covers the area to be modeled. A grid can be created by selecting the [[GMS:3D Grid Module#Create Grid| | #'''''Create a 3D grid''''' – Before building a UTCHEM simulation, a cell-centered 3D grid must be created which covers the area to be modeled. A grid can be created by selecting the [[GMS:3D Grid Module#Create Grid|'''Create Grid''']] command in the '''''Grid''''' menu. A suite of tools and commands for editing grids (inserting rows, changing column widths, etc.) are also provided in the [[GMS:3D Grid Module|3D Grid Module]]. | ||
#'''Define species to be modeled''' – The GMS interface to UTCHEM has 8 base species and an unlimited number of additional NAPL phase organic components. Only those components that are checked and included in the Names list will be included in the calculations performed by UTCHEM. GMS does not currently support the Polymer species. The Define Species dialog can be reached by choosing the | #'''''Define species to be modeled''''' – The GMS interface to UTCHEM has 8 base species and an unlimited number of additional NAPL phase organic components. Only those components that are checked and included in the Names list will be included in the calculations performed by UTCHEM. GMS does not currently support the Polymer species. The ''Define Species'' dialog can be reached by choosing the '''General Options''' command from the ''UTCHEM'' menu and then selecting the ''Define Species'' button. | ||
#'''Define aquifer characteristics''' – In the Reservoir Properties dialog, | #'''''Define aquifer characteristics''''' – In the ''Reservoir Properties'' dialog, specify aquifer properties. The '''Porosity, Kx, Pressure, Water Saturation,''' and '''Concentration''' buttons bring up a dialog that allows cell-by-cell editing. | ||
#'''Define species characteristics and interactions''' – The dialogs used to edit the properties of, and relations between, species are grouped into the Physical Properties submenu in the UTCHEM menu. They include Phase Behavior, Interfacial Tension, Organic Mass Transfer, Relative Permeability, Viscosity, Component Density, Fluid Compressibility, Capillary Pressure, Diffusion and Dispersion, Adsorption, and Tracer Properties. | #'''''Define species characteristics and interactions''''' – The dialogs used to edit the properties of, and relations between, species are grouped into the Physical Properties submenu in the UTCHEM menu. They include Phase Behavior, Interfacial Tension, Organic Mass Transfer, Relative Permeability, Viscosity, Component Density, Fluid Compressibility, Capillary Pressure, Diffusion and Dispersion, Adsorption, and Tracer Properties. | ||
#'''Assign boundary conditions''' – UTCHEM is a small scale, local model with simple boundary conditions. Boundary conditions can be set at the left, right or both ends of the model. The other two boundaries and the bottom are no-flow boundaries. The Top Boundary is open check box specifies whether the model domain is confined. When the Vadose Only or Both option is chosen in the Zone to Be Modeled | #'''''Assign boundary conditions''''' – UTCHEM is a small scale, local model with simple boundary conditions. Boundary conditions can be set at the left, right or both ends of the model. The other two boundaries and the bottom are no-flow boundaries. The ''Top Boundary'' is open check box specifies whether the model domain is confined. When the ''Vadose Only'' or ''Both'' option is chosen in the ''Zone to Be Modeled'' selection group, use the ''Water Table Elevation'' view windows to specify the boundary between the vadose and the saturated zones. The ''Pressure at Top Layer'' view windows specifies a hydraulic gradient. The ''Concentration of Water, Concentration of Chloride,'' and ''Concentration of Calcium'' view window all specify background concentration values for each boundary. | ||
#'''Insert any wells''' – The UTCHEM interface currently allows four types of vertical wells. They include ''Rate constrained injection well'', ''Pressure constrained injection well'', ''Rate constrained production well'', and ''Pressure constrained production well''. Both Injection well types require | #'''''Insert any wells''''' – The UTCHEM interface currently allows four types of vertical wells. They include ''Rate constrained injection well'', ''Pressure constrained injection well'', ''Rate constrained production well'', and ''Pressure constrained production well''. Both ''Injection'' well types require entering a flow for each phase and a concentration for each species within that phase, whereas the ''Production Wells'' only require a single flow or pressure value. Flow and concentration values can only change at the beginning of a new injection period. The number and duration of injection periods can be entered through the ''Time Options/Injection Periods'' dialog. Steps for creating a well are as follows: | ||
##Choose the '''New''' or '''Copy''' button. | ##Choose the '''New''' or '''Copy''' button. | ||
##Specify a name. | ##Specify a name. | ||
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##Enter a Skin Factor | ##Enter a Skin Factor | ||
##Enter Phase Flow, Concentrations and Pressure values according to the well Type. | ##Enter Phase Flow, Concentrations and Pressure values according to the well Type. | ||
#'''Save the model''' – Before running a UTCHEM simulation, the UTCHEM simulation must be saved using the '''Save''' or '''Save As''' commands. GMS saves three files: | #'''''Save the model''''' – Before running a UTCHEM simulation, the UTCHEM simulation must be saved using the '''Save''' or '''Save As''' commands. GMS saves three files: | ||
## .utc contains the actual UTCHEM input information. This file can be read separately by GMS. | ## *.utc contains the actual UTCHEM input information. This file can be read separately by GMS. | ||
## .uts is the UTCHEM super file and is only read by GMS. When | ## *.uts is the UTCHEM super file and is only read by GMS. When choosing the '''Open''' command from the ''File'' menu, a *.uts file extension is one of the Model Super File filters. | ||
## .hdd is the UTCHEM head file. UTCHEM needs this file for memory management. If | ## *.hdd is the UTCHEM head file. UTCHEM needs this file for memory management. If there on is a UTCHEM input file, read the simulation into GMS and resave it. GMS will then create the appropriate *.hdd file. | ||
#'''Run UTCHEM''' – Once a UTCHEM simulation is saved, UTCHEM can be launched by selecting the '''Run UTCHEM''' command from the ''UTCHEM'' menu. If changes have been made to the project, the user will be prompted to save the simulation. The current UTCHEM simulation will be used to run UTCHEM . The UTCHEM executable listed in the [[GMS:Preferences|Preferences]] dialog will be used. If the user has selected to view the model output with the model wrapper, UTCHEM output will be displayed with the [[GMS:Preferences#Models|model wrapper]]. Otherwise, UTCHEM will be run in a command prompt window. With either option, as the simulation proceeds, | #'''''Run UTCHEM''''' – Once a UTCHEM simulation is saved, UTCHEM can be launched by selecting the '''Run UTCHEM''' command from the ''UTCHEM'' menu. If changes have been made to the project, the user will be prompted to save the simulation. The current UTCHEM simulation will be used to run UTCHEM . The UTCHEM executable listed in the [[GMS:Preferences|Preferences]] dialog will be used. If the user has selected to view the model output with the model wrapper, UTCHEM output will be displayed with the [[GMS:Preferences#Models|model wrapper]]. Otherwise, UTCHEM will be run in a command prompt window. With either option, as the simulation proceeds, the user should see some text output in the window reporting the solution progress. When UTCHEM finishes successfully, the solution is automatically loaded and contours are turned on for the current data set. The solution and output files are organized in a UTCHEM solution folder in the [[GMS:The GMS Window|Project Explorer]]. | ||
#'''View the Results''' – Any output from UTCHEM that is in the GMS dataset format can be read into GMS using the Read Solution | #'''''View the Results''''' – Any output from UTCHEM that is in the GMS dataset format can be read into GMS using the '''Read Solution''' command in the ''UTCHEM'' menu. This output can include phase pressures, phase saturations, and species total concentrations. Once the UTCHEM solution datasets have been imported into GMS, the standard GMS visualization tools can be used to generate [[GMS:Cross Sections|cross sections]], [[GMS:Isosurfaces|isosurfaces]], and [[GMS:Animations|animations]]. | ||
==Reading a UTCHEM Simulation== | ==Reading a UTCHEM Simulation== | ||
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#Temperature variation | #Temperature variation | ||
#Polymer species | #Polymer species | ||
==Related Topics== | |||
*[[GMS:UTCHEM Display Options|UTCHEM Display Options]] | |||
{{Navbox GMS}} | {{Navbox GMS}} | ||
[[Category:UTCHEM]] | [[Category:UTCHEM]] | ||
[[Category:Archived]] | |||
