NESC9862 MESOI2.0.
MESOI2.0, Atmospheric Transport of Effluent Puffs
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
[ top ]
[ top ]
To submit a request, click below on the link of the version you wish to order.
Only liaison officers are authorised to submit online requests. Rules for requesters are
available here.
| Program name | Package id | Status | Status date |
|---|---|---|---|
| MESOI2.0 | NESC9862/01 | Tested | 05-FEB-1990 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NESC9862/01 | DEC VAX 11/780 | DEC VAX 8810 |
[ top ]
3. DESCRIPTION OF PROGRAM OR FUNCTION
MESOI version 2.0 is an interactive Lagrangian puff model for estimating the transport, diffusion, deposition, and decay of effluents released to the atmosphere. The model is capable of treating simultaneous releases from as many as four release points, which may be either at elevated locations or at ground-level. The puffs are advected by a horizontal wind field that is defined in three dimensions. The wind field may be adjusted for expected topographic effects.
MESOI version 2.0 is an interactive Lagrangian puff model for estimating the transport, diffusion, deposition, and decay of effluents released to the atmosphere. The model is capable of treating simultaneous releases from as many as four release points, which may be either at elevated locations or at ground-level. The puffs are advected by a horizontal wind field that is defined in three dimensions. The wind field may be adjusted for expected topographic effects.
[ top ]
4. METHOD OF SOLUTION
The concentration distribution within the puffs is initially assumed to be Gaussian in the horizontal and vertical directions. However, the vertical concentration distribution is modified by assuming reflection at the ground and the top of the atmospheric mixing layer. Material is deposited on the surface using a source depletion, dry deposition model and a washout coefficient model. The model also treats the decay of a primary effluent species and the ingrowth and decay of a single daughter species using a first-order decay process.
The concentration distribution within the puffs is initially assumed to be Gaussian in the horizontal and vertical directions. However, the vertical concentration distribution is modified by assuming reflection at the ground and the top of the atmospheric mixing layer. Material is deposited on the surface using a source depletion, dry deposition model and a washout coefficient model. The model also treats the decay of a primary effluent species and the ingrowth and decay of a single daughter species using a first-order decay process.
[ top ]
[ top ]
NESC9862/01
NEA-DB implemented the program on a VAX 8810 computer. No test case could be run, however, since no interactive input was available.[ top ]
[ top ]
8. RELATED AND AUXILIARY PROGRAMS
MESOI2.0 is based on the earlier MESOI versions 1.0 and 1.1 and the MESODIF model prepared originally by Start and Wendell for the National Reactor Testing Station. The main reasons for version 2.0 were to incorporate the processes that alter and deplete effluents and to provide a more realistic treatment of the wind field that transports the effluents. MESOI2.0 uses routines from the proprietary CalComp graphics library to obtain graphic output; these routines are not included and will have to be replaced with suitable local alternatives.
MESOI2.0 is based on the earlier MESOI versions 1.0 and 1.1 and the MESODIF model prepared originally by Start and Wendell for the National Reactor Testing Station. The main reasons for version 2.0 were to incorporate the processes that alter and deplete effluents and to provide a more realistic treatment of the wind field that transports the effluents. MESOI2.0 uses routines from the proprietary CalComp graphics library to obtain graphic output; these routines are not included and will have to be replaced with suitable local alternatives.
[ top ]
10. REFERENCES
- J.V. Ramsdell and G.F. Athey
MESOI: AN Interactive Lagrangian Trajectory Puff Diffusion Model,
PNL-3998, December 1981.
- G.F. Athey, K.J. Allwine, and J.V. Ramsdell
User's Guide to the MESOI Diffusion Model and to the Utility
Programs UPDATE and LOGRVU,
PNL-3999, November 1981.
- G.F. Athey and J.V. Ramsdell
User's Guide to the MESOI Diffusion Model: Version 1.1 (for Data
General Eclipse S/230 with AFOS),
PNL-4369, September 1982.
- J.V. Ramsdell and G.F. Athey
MESOI: AN Interactive Lagrangian Trajectory Puff Diffusion Model,
PNL-3998, December 1981.
- G.F. Athey, K.J. Allwine, and J.V. Ramsdell
User's Guide to the MESOI Diffusion Model and to the Utility
Programs UPDATE and LOGRVU,
PNL-3999, November 1981.
- G.F. Athey and J.V. Ramsdell
User's Guide to the MESOI Diffusion Model: Version 1.1 (for Data
General Eclipse S/230 with AFOS),
PNL-4369, September 1982.
NESC9862/01, included references:
- J.V. Ramsdell, G.F. Athey, and C.S. Glantz :MESOI Version 2.0: An Interactive Mesoscale Lagrangian Puff
Dispersion Model with Deposition and Decay
NUREG/CR-3344 PNL-4753 (November 1983)
[ top ]
[ top ]
[ top ]
[ top ]
[ top ]
NESC9862/01
| File name | File description | Records |
|---|---|---|
| NESC9862_01.001 | Information file | 129 |
| NESC9862_01.002 | MESOI.FOR | 258 |
| NESC9862_01.003 | ALPHA.FOR | 36 |
| NESC9862_01.004 | ARRIVN.FOR | 144 |
| NESC9862_01.005 | ARRTIM.FOR | 75 |
| NESC9862_01.006 | ASCND.FOR | 51 |
| NESC9862_01.007 | CLEAN.FOR | 105 |
| NESC9862_01.008 | DATRD.FOR | 63 |
| NESC9862_01.009 | DATWR.FOR | 47 |
| NESC9862_01.010 | DIFDEP.FOR | 380 |
| NESC9862_01.011 | DIRSPD.FOR | 62 |
| NESC9862_01.012 | DTCHAR.FOR | 78 |
| NESC9862_01.013 | DTOPO.FOR | 142 |
| NESC9862_01.014 | EXPSUM.FOR | 90 |
| NESC9862_01.015 | FILOPN.FOR | 56 |
| NESC9862_01.016 | GRIDIN.FOR | 237 |
| NESC9862_01.017 | INIT.FOR | 176 |
| NESC9862_01.018 | JULIAN.FOR | 39 |
| NESC9862_01.019 | LOCATE.FOR | 162 |
| NESC9862_01.020 | MODEND.FOR | 96 |
| NESC9862_01.021 | PLMRIZ.FOR | 100 |
| NESC9862_01.022 | PLOTZ.FOR | 111 |
| NESC9862_01.023 | PRINTE.FOR | 101 |
| NESC9862_01.024 | PUFFM.FOR | 106 |
| NESC9862_01.025 | PUFFR.FOR | 55 |
| NESC9862_01.026 | RDK.FOR | 55 |
| NESC9862_01.027 | RDKIN.FOR | 77 |
| NESC9862_01.028 | REARNG.FOR | 40 |
| NESC9862_01.029 | RELEAS.FOR | 259 |
| NESC9862_01.030 | SCREEN.FOR | 158 |
| NESC9862_01.031 | SHIFT.FOR | 44 |
| NESC9862_01.032 | STRAY.FOR | 55 |
| NESC9862_01.033 | TERRA.FOR | 144 |
| NESC9862_01.034 | TESTM.FOR | 61 |
| NESC9862_01.035 | TOPFIL.FOR | 80 |
| NESC9862_01.036 | WIND.FOR | 155 |
| NESC9862_01.037 | WINSPD.FOR | 56 |
| NESC9862_01.038 | WNDFLD.FOR | 156 |
| NESC9862_01.039 | WNDPLT.FOR | 151 |
| NESC9862_01.040 | DUMMY.FOR | 9 |
| NESC9862_01.041 | ASIG.FOR | 82 |
| NESC9862_01.042 | BSIG.FOR | 75 |
| NESC9862_01.043 | DSIG.FOR | 85 |
| NESC9862_01.044 | NRCSIG.FOR | 80 |
| NESC9862_01.045 | ARRIV.INC | 18 |
| NESC9862_01.046 | CHAR.INC | 21 |
| NESC9862_01.047 | CONST.INC | 22 |
| NESC9862_01.048 | DATIM.INC | 26 |
| NESC9862_01.049 | DECAY.INC | 20 |
| NESC9862_01.050 | MATRIX.INC | 20 |
| NESC9862_01.051 | PUFFS.INC | 21 |
| NESC9862_01.052 | REL.INC | 23 |
| NESC9862_01.053 | STATN.INC | 19 |
| NESC9862_01.054 | TOPOGR.INC | 16 |
| NESC9862_01.055 | UNITS.INC | 23 |
| NESC9862_01.056 | WINDS.INC | 21 |
| NESC9862_01.057 | OBSDAT.DAT | 144 |
| NESC9862_01.058 | CHKPNT.DAT | 35 |
| NESC9862_01.059 | HNFTEL.DAT | 22 |
Keywords: deposition, diffusion, environmental transport, interactive computing, meteorology, nuclear facilities, point sources, radioactive effluents.