ML20138M770
| ML20138M770 | |
| Person / Time | |
|---|---|
| Issue date: | 10/25/1985 |
| From: | Thomas Nicholson NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Grundfelt B KEMAKTA CONSULTANTS, INC. |
| References | |
| NUDOCS 8511040390 | |
| Download: ML20138M770 (2) | |
Text
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l DISTRIBUTION:R -2811 Circ /Chron ESB Subj/Rdg OCT 2 51985 (DC)/PDR RMinogue Dross KGoller EConti Dr. Bertil Grundfelt LBeratan Kemakta Consultants Inc.
RKornasiewicz TNicholson Luntmakargatan 94 i
S-11351 Stockholm Sweden
Dear Dr. Grundfelt:
In response to your request for information regarding characteristics of codes used for HYDROCOIN Level 1 problems, please find enclosed the "Femwater Code Characteristics" write-up.
Note that the write-up follows your format.
If you have any questions, please contact Mr. Timothy McCartin, WMB, RES, telephone 301-427-4149.
Sincerely, l
Thomas J. Nicholson Earth S:iences Branch Division of Radiation Programs and Earth Sciences Office of Nuclear Regulatory Research i
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FEMWATER CODE CHARACTERISTICS 1)
Model Descriptions:
Transient and steady-state saturated / unsaturated flow under isothermal conditions in porous media 2)
Method of Solution:
The governing equation is solved using the Galerkin finite-element method (Quadrilateral bilinear finite-elements).
Additionally, the Darcy velocities are solved for by applying the Galerkin finite-element method to Darcy's law.
The time derivative is approximated using one of three possible finite-difference methods (Crank-Nicholson, backward difference, and mid-difference formulations).
3)
Boundary Conditions:
Prescribed pressure, prescribed flux, and rainfall or seepage flow.
4)
Application
References:
None.
5)
Documentation
Reference:
G. T. Yeh, " Training Course No.1:
The Implementation of FEMWATER (ORNL-5567) Computer Program," Oak Ridge National Laboratory,
NUREG/CR-2705 (0RNL/TM-8327), June 1982.
6)
Other Information:
FEMWATER produces an output file for use by FEMWASTE (a contaminant transport model).