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NESC9522 MASCOT.

MASCOT, Multi Dim Groundwater Transport of Radioactive Waste

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1. NAME OR DESIGNATION OF PROGRAM:  MASCOT.
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2. COMPUTERS
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Program name Package id Status Status date
MASCOT NESC9522/01 Tested 16-JAN-1991

Machines used:

Package ID Orig. computer Test computer
NESC9522/01 DEC VAX 11/780 DEC VAX 8810
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3. DESCRIPTION OF PROGRAM OR FUNCTION

MASCOT computes the two- and three-dimensional space-time dependent, convective-dispersive transport of a four-member radionuclide decay chain in unbounded homogeneous porous media for constant (step and band) and radionuclide-dependent release. A steady-state isothermal groundwater flow regime is assumed with parallel streamlines along the direction of flow. The solutions are designed for an unbounded medium flow field assumed to be semi-infinite normal to the source and infinite orthogonal to the source with a variety of boundary conditions, including a single or multiple finite file source or a Gaussian-distributed source in the two-dimensional case, and a single or multiple patch source or bivariate-normal distributed source in the three-dimensional case.
A postprocessor program, MAS_GRF, which produces tables and/or graphs from MASCOT output, is included.
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4. METHOD OF SOLUTION

The physical and geochemical transport phenomena are described by a set of coupled differential equations.  These equations are solved using a Laplace transform for the time derivative, a Fourier transform for the spatial coordinates, and Gauss-Legendre and fourth-order Newton-Cotes integration schemes to  guarantee maximum stability and convergence. The Euler-Lagrange integration scheme is used when there is no longitudinal dispersion. The infinite interval is transformed into the sum of two finite intervals to optimize the integration convergence required by the solutions.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
   100 output time intervals
    50 points
     4 species per decay chain
MASCOT does not have a restart capability.
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6. TYPICAL RUNNING TIME

A one-dimensional case using integration with one time-step and 50 points requires 20 CPU minutes on a DEC VAX11/780.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
NESC9522/01 16-JAN-1991 Tested at NEADB
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10. REFERENCES:
NESC9522/01, included references:
- A.B. Gureghian:
  Analytical Solutions for Multidimensional Transport of a Four
  Member Radionuclide Decay Chain in Ground Water
  BMI/OCRD-25 (January 1987).
- A.B. Gureghian:
  MASCOT User's Guide - Version 2.0:
  Analytical Solutions for Multidimensional Transport of a Four
  Member Radionuclide Decay Chain in Ground Water
  BMI/OCRD-30 (July 1988).
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11. MACHINE REQUIREMENTS:
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC9522/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  VMS 4.1.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The MAS_GRF postprocessor requires the proprietary CA-DISSPLA 10.0 software (see http://www.gaeinc.com) to produce graphical results. MAS_GRF can produce tables if DISSPLA is not available.
Both MASCOT and MAS_GRF must be compiled using the FORTRAN compiler option, G_FLOATING, which implements extended-range floating-point arithmetic. Other non-standard FORTRAN 77 features include extended-length symbolic names, the END DO statement, and calls to system DATE and TIME routines.
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15. NAME AND ESTABLISHMENT OF AUTHORS

          A.B. Gureghian
          Office of Waste Technology Development
          Battelle Memorial Institute
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16. MATERIAL AVAILABLE
NESC9522/01
File name File description Records
NESC9522_01.001 This information file 160
NESC9522_01.002 Machine-readable document 162
NESC9522_01.003 MASCOT FORTRAN source 2400
NESC9522_01.004 MAS_GRF Fortran source 1071
NESC9522_01.005 Command file to compile MASCOT 7
NESC9522_01.006 Command file to run sample problems 1 28
NESC9522_01.007 Command file to run sample problems 2 23
NESC9522_01.008 Command file to run sample problems 3 23
NESC9522_01.009 Command file to run sample problems 4 24
NESC9522_01.010 Command file to run sample problems 5 29
NESC9522_01.011 Command file to run sample problems 6 101
NESC9522_01.012 Command file to run sample problems 7 10
NESC9522_01.013 MASCOT Case 1a-band input file 46
NESC9522_01.014 MASCOT Case 1b-band input file 46
NESC9522_01.015 MASCOT Case 1a-step input file 46
NESC9522_01.016 MASCOT Case 1b-step input file 46
NESC9522_01.017 MASCOT Case 2a input file 42
NESC9522_01.018 MASCOT Case 2b input file 42
NESC9522_01.019 MASCOT Case 2c input file 42
NESC9522_01.020 MASCOT Case 3a input file 43
NESC9522_01.021 MASCOT Case 3b input file 42
NESC9522_01.022 MASCOT Case 3c input file 43
NESC9522_01.023 MASCOT Case 4 input file 50
NESC9522_01.024 MASCOT Case 5a input file 43
NESC9522_01.025 MASCOT Case 5b input file 43
NESC9522_01.026 MASCOT Case 5c input file 43
NESC9522_01.027 MASCOT Case 5d input file 43
NESC9522_01.028 MASCOT Case 6a-t1 input file 56
NESC9522_01.029 MASCOT Case 6a-t2 input file 54
NESC9522_01.030 MASCOT Case 6a-t3 input file 56
NESC9522_01.031 MASCOT Case 6b-t1 input file 56
NESC9522_01.032 MASCOT Case 6b-t2 input file 54
NESC9522_01.033 MASCOT Case 6b-t3 input file 56
NESC9522_01.034 MASCOT Case 7 sample problem 49
NESC9522_01.035 MAS_GRF Case 4 input file 6
NESC9522_01.036 MAS_GRF Case 6-t1 input file 4
NESC9522_01.037 MAS_GRF Case 6-t2 input file 4
NESC9522_01.038 MAS_GRF Case 6-t3 input file 4
NESC9522_01.039 Case 1a-band sample problem output 197
NESC9522_01.040 Case 1b-band sample problem output 194
NESC9522_01.041 Case 1a-step sample problem output 196
NESC9522_01.042 Case 1b-step sample problem output 196
NESC9522_01.043 Case 2a sample problem output 126
NESC9522_01.044 Case 2b sample problem output 126
NESC9522_01.045 Case 2c sample problem output 120
NESC9522_01.046 Case 3a sample problem output 155
NESC9522_01.047 Case 3b sample problem output 139
NESC9522_01.048 Case 3c sample problem output 149
NESC9522_01.049 Case 4 sample problem output 435
NESC9522_01.050 Case 4 MAS_GRF sample problem output 32
NESC9522_01.051 Case 4 MAS_GRF DISSPLA original output 93
NESC9522_01.052 Case 5a sample problem output 220
NESC9522_01.053 Case 5b sample problem output 221
NESC9522_01.054 Case 5c sample problem output 209
NESC9522_01.055 Case 5d sample problem output 210
NESC9522_01.056 Case 6a-t1 sample problem output 407
NESC9522_01.057 Case 6a-t1 MAS_GRF sample problem output 22
NESC9522_01.058 Case 6a-t1 MAS_GRF DISSPLA original output 49
NESC9522_01.059 Case 6a-t2 sample problem output 365
NESC9522_01.060 Case 6a-t2 MAS_GRF sample problem output 22
NESC9522_01.061 Case 6a-t2 MAS_GRF DISSPLA original output 49
NESC9522_01.062 Case 6a-t3 sample problem output 407
NESC9522_01.063 Case 6a-t3 MAS_GRF sample problem output 22
NESC9522_01.064 Case 6a-t3 MAS_GRF DISSPLA output 49
NESC9522_01.065 Case 6b-t1 sample problem output 405
NESC9522_01.066 Case 6b-t1 MAS_GRF sample problem output 22
NESC9522_01.067 Case 6b-t1 MAS_GRF DISSPLA original output 49
NESC9522_01.068 Case 6b-t2 sample problem output 363
NESC9522_01.069 Case 6b-t2 MAS_GRF sample problem output 22
NESC9522_01.070 Case 6b-t2 MAS_GRF DISSPLA output 49
NESC9522_01.071 Case 6b-t3 sample problem output 405
NESC9522_01.072 Case 6b-t3 MAS_GRF sample problem output 22
NESC9522_01.073 Case 6b-t3 MAS_GRF DISSPLA original output 49
NESC9522_01.074 Case7 sample problem output 411
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17. CATEGORIES
  • R. Environmental and Earth Sciences

Keywords: Lagrange equations, decay, dispersions, fluid flow, ground water, radioactivity transport, radionuclide migration, transport theory.