NESC1144 FEMWATER BLT.

1. NAME OR DESIGNATION OF PROGRAM:  FEMWATER BLT.

3. DESCRIPTION OF PROGRAM OR FUNCTION

FEMWATER,BLT is used to model release and transport of contaminants from wastes stored in metallic containers in saturated or unsaturated soil systems including low- level waste disposal sites. Both programs provide two-dimensional, time-dependent, finite-element analyses. FEMWATER calculates water velocity, moisture content, and pressure head in unsaturated/ saturated porous media. BLT, a modification of the FEMWATER code, predicts container degradation, waste form leaching, and radionuclide migration in unsaturated porous media.

4. METHOD OF SOLUTION

FEMWATER and BLT perform two-dimensional time-  dependent analyses using the finite element method. Nonlinearities in the unsaturated flow equations are handled through Picard iteration. The transport equations in BLT are linear, and Gaussian elimination is used to solve the matrix equations.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
   528 finite elements (FEMWATER)
   595 nodal points (FEMWATER)
   225 finite elements (BLT)
   252 nodal points (BLT)
   100 waste-containing elements
    20 different waste types
These limits may be changed by redimensioning the appropriate arrays.

6. TYPICAL RUNNING TIME

Execution time for FEMWATER varies depending  on the number of iterations required to converge the solution. For a typical problem with approximately 500 nodal points, execution time  to calculate the steady-state flow pattern is about 20 CPU minutes on an IBM PC/AT with a coprocessor. For 225 nodal points, BLT execution time is typically about 1.3 CPU minutes per time step. NESC executed the FEMWATER sample problem in approximately 7.5 CPU minutes and the BLT sample problem in approximately 37 CPU minutes on an IBM PS/2 model 70 with a coprocessor.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

FEMWATER,BLT is a modified version  of the FEMWATER1,FEMWASTE1 (NESC9902) package developed at Oak Ridge National Laboratory.

10. REFERENCES:

- T.M. Sullivan and C.J. Suen:
  Low-Level Waste Shallow Land Disposal Source Term Model - Data
  Input Guides
  NUREG/CR-5387 BNL-NUREG-52206 (July 1989).
- L. Reed:
  FEMWATER,BLT Flexible Disk Cartridge Descriptions and
  Implementation Information
  NESC Note 91-84 (June 28, 1991).

11. MACHINE REQUIREMENTS

The minimum hardware configuration is an IBM  PC or compatible with 650 Kbytes of memory. A fixed disk drive of at least 10 Mbytes, a 1.2 Mbyte flexible disk drive, and a math coprocessor are recommended.

The program was compiled and the test cases executed by NEA-DB on a DELL 486P/33MHz compatible PC.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  MS-DOS 3.1,
PC-DOS 4.0.

The program was compiled using the Lahey F77L3-EM32 Version 4.02 Fortran-77 compiler and linked with the Lahey LINK-EM/32 Version 2.06 linker in connection with the Lahey/Ergo OS/386 DOS Extender Version 4.02. The PC ran under MS-DOS 5.0.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The
executable files supplied were created using Microsoft FORTRAN 5.0.

15. NAME AND ESTABLISHMENT OF AUTHORS

       T. M. Sullivan and C. J. Suen
       Brookhaven National Laboratory, U.S.A.

File name	File description	Records
NESC1144_01.001	FEMBLT.INF Information file	97
NESC1144_01.002	READ.ME Original read me file	24
NESC1144_01.003	FMWTR5_1.FOR Source Fortran file	1133
NESC1144_01.004	FMWTR5_2.FOR Source Fortran file	1096
NESC1144_01.005	FMWTR5_3.FOR Source Fortran file	1049
NESC1144_01.006	FMWTR5_4.FOR Source Fortran file	1108
NESC1144_01.007	FMWTR5_6.EXE FEMWATER executable file	0
NESC1144_01.008	MAKEFILE.FEM Makefile file	17
NESC1144_01.009	CREAEXE1.BAT Auxiliary file	4
NESC1144_01.010	INPUT Input file	148
NESC1144_01.011	OUTPUT Output file	1730
NESC1144_01.012	OUT_AUX Auxiliary Output file	1196
NESC1144_01.013	BLT1.FOR Source Fortran file	1178
NESC1144_01.014	BLT2.FOR Source Fortran file	1133
NESC1144_01.015	BLT3.FOR Source Fortran file	1731
NESC1144_01.016	BLT4.FOR Source Fortran file	1737
NESC1144_01.017	GETTIM.FOR Source Fortran file	10
NESC1144_01.018	BLT.EXE BLT executable file	0
NESC1144_01.019	MAKEFILE.BLT Makefile file	17
NESC1144_01.020	CREAEXE2.BAT Auxiliary file	4
NESC1144_01.021	BLTTEST.DAT Input file	66
NESC1144_01.022	AUX_IN.DAT Auxiliary input file	596
NESC1144_01.023	BLTNEA.OUT Output file	2023
NESC1144_01.024	RESTART.OUT Output file	1853
NESC1144_01.025	TRACECON.DAT Output file	300
NESC1144_01.026	LEACHMS.DAT Output file	1000
NESC1144_01.027	LEACHRL.DAT Output file	1000
NESC1144_01.028	TIMEOUT.DAT Output file	101
NESC1144_01.029	README.DAT Original read me file	19
NESC1144_01.030	REDIMGRD.FOR Source Fortran file	308
NESC1144_01.031	REDIMGRD.EXE REDIMGRD executable file	0
NESC1144_01.032	MAKEFILE.RED Makefile file	17
NESC1144_01.033	CREAEXE3.BAT Auxiliary file	4
NESC1144_01.034	AUX_IN.DAT Input file	596
NESC1144_01.035	AUX_NEA.OUT Output file	62
NESC1144_01.036	WTRNEWBD.DAT Auxiliary output file	15
NESC1144_01.037	DOS file-names	36