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STOMP User Guide

  • STOMP Website
  • Introduction
    • Operational Mode Specific Input Guides
    • Availability and Licensing
    • Installation
  • Fundamentals of STOMP
    • Code Design
    • Numerical Solutions
    • Description of Variables
    • List of Variable Names
    • Accepted Units
    • Glossary of Symbols
  • Using STOMP
    • Pre-Processing
    • Input File Structure
    • Generated Output Files
    • Post-Processing
  • Example Short Course Problems
  • Additional User Documentation

Breadcrumb

  1. STOMP User Guide
  2. STOMP Input

Output Control Card Options

Two types of output can be requested in the output control card: 1) reference node output and 2) plot file output.

  • Reference Node Output
  • Plot File Output

Reference Node Output

Reference node output is generated by selecting reference nodes, or grid cells, and output variables. The user may request any number of reference nodes, but reference node output was primarily designed for tracking the time evolution of selected variables at key points of interest. Reference nodes are defined with three indices, which indicate the x-, y-, and z-direction coordinates of the grid cell. Grid cell numbering in the simulator increments in the order i, j, and k, where the indices refer to the x-, y-, and z-directions, respectively, for Cartesian coordinate systems, and r-, θ-, and z-directions, respectively, for cylindrical coordinate systems. Reference Node Screen Output Frequency and Reference Node Output File Frequency are parameters that indicate how often, with respect to time step reference node, output will be written to STDIO and the output file, respectively. A frequency value of 1 indicates reference node output occurs every time step, whereas a frequency value of 10 indicates that reference node output occurs every 10 time steps. The user has control over the output time and length units and the number of significant digits reported to the various output media. Unless declared through the Output Time Units or Output Length Units input items, values for time and lengths recorded to the output media will be expressed in units of seconds and meters, respectively. These inputs allow the user to customize time- and length-scale units to those most appropriate to the solved problem. The Screen Significant Digits, Output File Significant Digits, and Plot File Significant Digits input items allow the user to customize the number of significant digits that appear in field and flux variable results written to the STDIO, output file, and plot.n file, respectively. The default value for the number of significant digits is 5, and the minimum number of significant digits is 4. The same list of variables for each operational mode is available for output to the plot.n files. Output units for all variables with units can be specified immediately following the variable name. Variables without units require a null entry for the variable units. Null entries for variables with units yield default output units, which are expressed in SI units. Variables that can be specified for reference node output are shown in the table below.

Reference Node Variables

Reference Node Variable Name SI Units
apparent aqueous saturation -
aqueous CO2 concentration  kg/m3
aqueous CO2 mass fraction  -
aqueous CO2 mole fraction  -
aqueous courant -
aqueous density kg/m3
aqueous enthalpy J/kg
aqueous fracture -
aqueous gauge pressure Pa
aqueous hydraulic head m
aqueous internal energy J
aqueous matrix -
aqueous moisture content -
aqueous pressure Pa
aqueous relative permeability -
aqueous salt mole fraction -
aqueous saturation  -
aqueous thermal conductivity W/m K
aqueous viscosity Pa s
aqueous water concentration kg/m3
aqueous water mass fraction -
CO2 aqueous diffusion coefficient -
CO2 mass source integral  kg
component mass source rate kg/s
coupled-well CO2 mass integral kg
coupled-well CO2 mass nodal rate kg/s
coupled-well CO2 mass rate kg/s
coupled-well water mass integral kg
coupled-well water mass nodal rate  kg/s
coupled-well water mass rate kg/s
diffusive porosity -
effective trapped gas -
gas CO2 concentration kg/m3
gas CO2 mass fraction  -
gas CO2 mole fraction -
gas courant  -
gas density kg/m3
gas enthalpy J/kg
gas fracture  -
gas gauge pressure Pa
gas hydraulic head m
gas internal energy J
gas matrix -
gas pressure Pa
gas relative permeability  
gas saturation  -
gas thermal conductivity W/m K
gas viscosity Pa s
gas water concentration kg/m3
gas water mass fraction -
gas water mole fraction -
gas-aqueous scaling factor  -
integrated aqueous CO2 mass kg
integrated aqueous water mass kg
integrated CO2 mass kg
integrated CO2 mass source kg
integrated gas component mass kg
integrated gas water mass kg
integrated precipitated salt mass kg
integrated trapped gas CO2 kg
integrated water mass kg
integrated water mass source kg
mean effective stress Pa
minimum effect aqueous saturation kg
node number -
osmotic efficiency factor -
osmotic pressure Pa
phase condition -
precipitated salt saturation -
rock/soil type -
salt aqueous concentration kg/m3
salt aqueous mass fraction -
salt mass source integral kg
salt mass source rate  kg/s
salt volumetric concentration  kg/m3
saturation function index -
similitude parameter m2/s
source-well pressure Pa
temperature C
total CO2 mass kg
total salt mass kg
total water mass kg
trapped gas saturation -
vertical-equilibrium aqueous pressure Pa
vertical-equilibrium aqueous relative permeability -
vertical-equilibrium aqueous saturation -
vertical-equilibrium gas pressure Pa
vertical-equilibrium gas relative permeability -
vertical-equilibrium gas saturation -
vertical-equilibrium gas-aqueous interface elevation m
vertical-equilibrium trapped gas saturation -
vertically-integrated CO2 mass kg
vertically-integrated CO2 mass area kg/m2 s
vertically-integrated gas CO2 mass  kg
vertically-integrated gas CO2 mass area kg/m2 s
vertically-integrated aqueous CO2 mass kg
vertically-integrated aqueous CO2 mass area kg/m2 s
water gas diffusion coefficient -
water mass source integral kg
water mass source rate  kg/s
water vapor partial pressure  Pa
webb matching point head m
webb matching point saturation -
well pressure Pa
well-node pressure -
x aqueous volumetric flux m/s
x gas volumetric flux  m/s
x node position  
x salt flux kg/m2 s
x thermal conductivity  W/m K
x-direction displacement m
x-direction intrinsic permeability m2
x-direction normal strain -
xnc aqueous volumetric flux  m/s
xnc gas volumetric flux m/s
xnc heat flux W/m2
xnc salt flux kg/m2 s
y aqueous volumetric flux  m/s
y gas volumetric flux m/s
y node position  
y salt flux kg/m2 s
y thermal conductivity W/m K
y-direction displacement m
y-direction intrinsic permeability m2
y-direction normal strain -
ync aqueous volumetric flux  m/s
ync gas volumetric flux m/s
ync heat flux W/m2
ync salt flux kg/m2 s
z aqueous volumetric flux m/s
z gas volumetric flux m/s
z node position  
z salt flux kg/m2 s
z thermal conductivity W/m K
z-direction displacement m
z-direction intrinsic permeability m^2
z-direction normal strain -
znc aqueous volumetric flux  m/s
znc gas volumetric flux m/s
znc heat flux W/m2
znc salt flux kg/m2 s

Plot File Output

Plot files are written at the conclusion of an execution, by default, and at each requested Plot File Output Time. Plot files contain geometry data and selected field and flux variable results for every node in the computational domain. These files represent a “snapshot” of the simulation at a certain point in time. Requests for Plot File Output Times can be specified with user defined units. A restart.n file is generated with every plot.n file. Both restart.n and plot.n files are suffixed with a file name extension of a dot followed by an integer (e.g., plot.567, restart.0032). The extension integer corresponds with the time step for which the file was written. Both plot.n and restart.n files are written at the conclusion of a time step. Field and flux variables recorded to plot.n files are selected from the list shown below. Output units for all variables with units can be specified in the input item immediately following the variable name. Variables without units require a null entry for the variable units. Null entries for variables with units yield default output units, which are expressed in SI units.

Plot File Variables

Reference Node Variable Name SI Units
3d grid -
apparent aqueous saturation -
aqueous CO2 concentration  kg/m3
aqueous CO2 mass fraction  -
aqueous CO2 mole fraction  -
aqueous courant -
aqueous density kg/m3
aqueous fracture -
aqueous gauge pressure Pa
aqueous hydraulic head m
aqueous internal energy J
aqueous matrix -
aqueous moisture content -
aqueous pressure Pa
aqueous relative permeability -
aqueous salt mole fraction -
aqueous saturation  -
aqueous thermal conductivity W/m K
aqueous viscosity Pa s
aqueous water concentration kg/m3
aqueous water mass fraction -
CO2 aqueous diffusion coefficient -
CO2 mass source integral  kg
component mass source rate kg/s
diffusive porosity -
effective trapped gas -
final restart -
gas CO2 concentration kg/m3
gas CO2 mass fraction  -
gas CO2 mole fraction -
gas courant  -
gas density kg/m3
gas enthalpy J/kg
gas fracture  -
gas gauge pressure Pa
gas hydraulic head m
gas internal energy J
gas matrix -
gas pressure Pa
gas relative permeability  
gas saturation  -
gas thermal conductivity W/m K
gas viscosity Pa s
gas water concentration kg/m3
gas water mass fraction -
gas water mole fraction -
gas-aqueous scaling factor  -
mean effective stress Pa
minimum effect aqueous saturation  
no restart -
node number -
osmotic efficiency factor -
osmotic pressure Pa
phase condition -
precipitated salt saturation -
rock/soil type -
salt aqueous concentration kg/m3
salt aqueous mass fraction -
salt mass source integral kg
salt mass source rate  kg/s
salt volumetric concentration  kg/m3
saturation function index -
similitude parameter m2/s
temperature C
total CO2 mass kg
total salt mass kg
total water mass kg
trapped gas saturation -
vertical-equilibrium aqueous pressure Pa
vertical-equilibrium aqueous relative permeability -
vertical-equilibrium aqueous saturation -
vertical-equilibrium gas pressure Pa
vertical-equilibrium gas relative permeability -
vertical-equilibrium gas saturation -
vertical-equilibrium gas-aqueous interface elevation m
vertical-equilibrium trapped gas saturation -
vertically-integrated aqueous CO2 mass kg
vertically-integrated aqueous CO2 mass area kg/m2 s
vertically-integrated CO2 mass kg
vertically-integrated CO2 mass area kg/m2 s
vertically-integrated gas CO2 mass  kg
vertically-integrated gas CO2 mass area kg/m2 s
water gas diffusion coefficient -
water mass source integral kg
water mass source rate  kg/s
water vapor partial pressure Pa
webb matching point head m
webb matching point saturation -
x aqueous volumetric flux m/s
x gas volumetric flux  m/s
x node centroid -
x salt flux kg/m2 s
x thermal conductivity  W/m K
x-direction displacement m
x-direction index of node -
x-direction intrinsic permeability m^2
x-direction normal strain -
xnc aqueous volumetric flux  m/s
xnc gas volumetric flux m/s
xnc heat flux W/m2
xnc salt flux kg/m2 s
xnc surface area m2
y aqueous volumetric flux  m/s
y gas volumetric flux m/s
y node centroid -
y salt flux kg/m2 s
y thermal conductivity W/m K
y-direction displacement m
y-direction index of node -
y-direction intrinsic permeability m^2
y-direction normal strain -
ync aqueous volumetric flux  m/s
ync gas volumetric flux m/s
ync heat flux W/m2
ync salt flux kg/m2 s
ync surface area m2
z aqueous volumetric flux m/s
z gas volumetric flux m/s
z node centroid -
z salt flux kg/m2 s
z thermal conductivity W/m K
z-direction displacement m
z-direction index of node -
z-direction intrinsic permeability m2
z-direction normal strain -
znc aqueous volumetric flux  m/s
znc gas volumetric flux m/s

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