User:Jcreer/GMS 99.99 Changes: Difference between revisions

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*''Darcy flux hydraulic conductivity for fracture only (FRADARCY)'' – Indicates that the Darcy flux should be computed only for the fracture domain by use of this hydraulic conductivity value. Thus, the input hydraulic conductivity is divided by the fracture volume fraction. Also, the storage terms (for transient simulations) which are input are only for the fracture (mobile) domain.
*''Darcy flux hydraulic conductivity for fracture only (FRADARCY)'' – Indicates that the Darcy flux should be computed only for the fracture domain by use of this hydraulic conductivity value. Thus, the input hydraulic conductivity is divided by the fracture volume fraction. Also, the storage terms (for transient simulations) which are input are only for the fracture (mobile) domain.
*''Shift matrix diffusion start time (TSHIFTMD)'' – indicates that the MODFLOW start time (t = 0) is not the starting time of matrix diffusion, and the subsequent real variable.-->
*''Shift matrix diffusion start time (TSHIFTMD)'' – indicates that the MODFLOW start time (t = 0) is not the starting time of matrix diffusion, and the subsequent real variable.-->
===GRIDDATA===
*''Griddata'' – List of available properties.
**''MDFLAG'' — The matrix diffusion type flag at any location.
**''VOLFRACMD'' –  The mobile fraction at any location, i.e., the fraction of the total space that is occupied by the fracture/high permeability domain.
**''PORMD'' –  The mobile fraction at any location, i.e., the fraction of the total space that is occupied by the fracture/high permeability domain.
**''RHOBMD'' – The dry bulk density of the porous matrix of the matrix domain at any location
**''DIFFLENMD'' –  The diffusion length for diffusive transport within the matrix domain at any location (only used for embedded heterogeneity).
**''TORTMD'' –  The tortuosity of the matrix domain at any location.
**''KDMD'' – The adsorption coefficient (Kd) of a contaminant species in the immobile domain at any location.
**''DECAYMD'' – The first-order decay coefficient in water and on soil (1/time) in the matrix domain at any location.
**''YEILDMD'' – The yield coefficient for chain decay at any location. The value indicates mass of species generated by decay of the parent component.
**''DIFFMD'' – The diffusion coefficient of each species component within the matrix domain at any location.
**''AIOLD1MD'' – The concentration integral (equation 8) of each species in an element associated with matrix diffusion into an infinite acting adjacent aquitard (MDFLAG = 1, 3, 4, 5, 6, or 7). This value is used to restart a simulation with prior matrix diffusion.
**''AIOLD2MD'' – The concentration integral (equation 8) of each species in an element associated with matrix diffusion in low permeability zones that are embedded in the volume element (MDFLAG = 2, 5, 6, or 7). This value is used to restart a simulation with prior matrix diffusion.
*''Use Constant'' – Turn on to enter a constant value.
*''Constant Value'' – Enter a constant value for the property.
*''Dataset to Array'' – Clicking the '''Dataset to Array''' will open an [[GMS:MODFLOW Array Editor|array editor dialog]] for the specific property.

Revision as of 22:54, 19 April 2022


MF 6 MDT Package

Changes to options and grid data

OPTIONS

  • SAVE FLOWS – Save flows to budget file.
  • PRINT FLOWS – Print flows to listing file.
  • SORPTION – Sorption will be activated. Requires that BULK DENSITY and DISTCOEF.
  • FIRST ORDER DECAY – First-order decay will occur.
  • TSHIFTMD – Time elapsed since matrix diffusion began. Indicates that the MODFLOW start time (t = 0) is not the starting time of matrix diffusion, and the subsequent real variable.
  • MD FILEOUT – Write AIOLD1MD and AIOLD2MD coefficients to a binary file.

GRIDDATA

  • Griddata – List of available properties.
    • MDFLAG — The matrix diffusion type flag at any location.
    • VOLFRACMD – The mobile fraction at any location, i.e., the fraction of the total space that is occupied by the fracture/high permeability domain.
    • PORMD – The mobile fraction at any location, i.e., the fraction of the total space that is occupied by the fracture/high permeability domain.
    • RHOBMD – The dry bulk density of the porous matrix of the matrix domain at any location
    • DIFFLENMD – The diffusion length for diffusive transport within the matrix domain at any location (only used for embedded heterogeneity).
    • TORTMD – The tortuosity of the matrix domain at any location.
    • KDMD – The adsorption coefficient (Kd) of a contaminant species in the immobile domain at any location.
    • DECAYMD – The first-order decay coefficient in water and on soil (1/time) in the matrix domain at any location.
    • YEILDMD – The yield coefficient for chain decay at any location. The value indicates mass of species generated by decay of the parent component.
    • DIFFMD – The diffusion coefficient of each species component within the matrix domain at any location.
    • AIOLD1MD – The concentration integral (equation 8) of each species in an element associated with matrix diffusion into an infinite acting adjacent aquitard (MDFLAG = 1, 3, 4, 5, 6, or 7). This value is used to restart a simulation with prior matrix diffusion.
    • AIOLD2MD – The concentration integral (equation 8) of each species in an element associated with matrix diffusion in low permeability zones that are embedded in the volume element (MDFLAG = 2, 5, 6, or 7). This value is used to restart a simulation with prior matrix diffusion.
  • Use Constant – Turn on to enter a constant value.
  • Constant Value – Enter a constant value for the property.
  • Dataset to Array – Clicking the Dataset to Array will open an array editor dialog for the specific property.