ESTS1121 FEHM.

FEHM, Finite Element Heat and Mass Transfer Code

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHODS, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES, RELATED OR AUXILIARY PROGRAMS, STATUS, REFERENCES, HARDWARE REQUIREMENTS, LANGUAGE, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: FEHM.

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2. COMPUTERS

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
FEHM	ESTS1121/01	Arrived	22-MAR-2001

Machines used:

Package ID	Orig. computer	Test computer
ESTS1121/01	SUN W.S.,IBM RISC6000 WS,HP W.S.,SGI W.S.,CRAY W.S.

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3. DESCRIPTION OF PROGRAM OR FUNCTION

FEHM is a numerical simulation code for subsurface transport processes. It models 3-D, time-dependent, multiphase, multicomponent, non-isothermal, reactive flow through porous and fractured media. It can accurately represent complex 3-D geologic media and structures and their effects on subsurface flow and transport. Its capabilities include flow of gas, water, and heat; flow of air, water, and heat; multiple chemically
reactive and sorbing tracers; finite element/finite volume
formulation; coupled stress module; saturated and unsaturated media; and double porosity and double porosity/double permeability capabilities.

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4. METHODS

FEHM uses a preconditioned conjugate gradient solution of coupled linear equations and a fully implicit, fully coupled Newton Raphson solution of nonlinear equations. It has the capability of simulating transport using either a advection/diffusion solution or a particle tracking method.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: Disk space and machine memory are the only limitations.

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6. TYPICAL RUNNING TIME

Run time requirements depend highly on problem solving, computer running on, and computer load.

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7. UNUSUAL FEATURES

All of the fracture modeling features are available for transport as well as flow.

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8. RELATED OR AUXILIARY PROGRAMS

FEHM uses several auxiliary grid-generating packages. GEOMESH/X3D creates unstructured grids in the format for an FEHM input file. Rectangular Grid Generator creates structured grids in the format for the FEHM input file. There is also an auxiliary graphical user interface called the Browser for pre- and post-processing FEHM.

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9. STATUS

Package ID	Status date	Status
ESTS1121/01	22-MAR-2001	Masterfiled Arrived

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10. REFERENCES

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11. HARDWARE REQUIREMENTS

A SUN, IBM RISC 6000, HP, SGI or a Cray running a UNIX based operating system. The amount of memory and disk space depends on the problem running.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
ESTS1121/01	FORTRAN-77, C-LANGUAGE

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

A file extension of .dat are input files. Makefiles for each platform are included. The FEHM User' Manual is in the files FEHMN.UM.doc and the Models and Methods is in the files FEHMN.MMS.doc.

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15. NAME AND ESTABLISHMENT OF AUTHORS: G.A. Zyvoloski
Los Alamos National Lab., NM (United States)

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16. MATERIAL AVAILABLE

ESTS1121/01

fehm_src.tar Tar File
fehm_objects.tar Tar File
fehm_documents.tar Tar File

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17. CATEGORIES

R. Environmental and Earth Sciences

Keywords: environmental transport, finite element method, fluid flow, heat transfer, porous materials, three-dimensional.