NESC0246 FLOW-MODEL

FLOW-MODEL, Multichannel 2-D 2 Phase Flow for Open Matrix Flow BWR

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM 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 AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: FLOW-MODEL

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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
FLOW-MODEL	NESC0246/01	Tested	14-OCT-1986
FLOW-MODEL	NESC0246/02	Tested	01-FEB-1971

Machines used:

Package ID	Orig. computer	Test computer
NESC0246/01	IBM 360 series	IBM 3081
NESC0246/02	CDC 6500	CDC 6500

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3. DESCRIPTION OF PROBLEM OR FUNCTION

FLOW-MODEL is    a     multi-
channel, two-dimensional, two-phase flow model designed to compute
the axial  and radial  coolant density  and quality  profiles, the
axial pressure  profile and  the weight  flow distribution  for an
open matrix flow, boiling water reactor.

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4. METHOD OF SOLUTION

The discontinuous nodal flow model
approximation leads to a system of simultaneous nonlinear
equations which are solved by iteration.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
    20 channels
   100 axial nodes
   100 axial q points

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6. TYPICAL RUNNING TIME: The sample problem requires 1 minute.

NESC0246/01

NEA-DB compiled, linked, and executed the test case included in this package on an IBM 3081 computer in 4 seconds of CPU time.

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7. UNUSUAL FEATURES OF THE PROGRAM

The program can use an SC-4020
graphical display device for plotting results.

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8. RELATED AND AUXILIARY PROGRAMS

The original IBM7094 version was
prepared by R. F. Berland of the Mathematical and Computing
Sciences Group, Atomics International, Canoga Park, California.

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9. STATUS

Package ID	Status date	Status
NESC0246/01	14-OCT-1986	Tested at NEADB
NESC0246/02	01-FEB-1971	Tested at NEADB

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10. REFERENCES:

NESC0246/01, included references:

- D.E. Schramm and R.F. Berland:
  A Multi-Channel, Two-Dimensional, Two-Phase Flow Model and
  IBM 7090 Code
  NAA-SR-TDR-9444 (December 31, 1963)

NESC0246/02, included references:

- D.E. Schramm and R.F. Berland:
  A Multi-Channel, Two-Dimensional, Two-Phase Flow Model and
  IBM 7090 Code
  NAA-SR-TDR-9444 (December 31, 1963)

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11. MACHINE REQUIREMENTS: 240K bytes storage

NESC0246/01

To execute the test case included in this package on an IBM 3081 computer, 110K bytes of main storage are required.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NESC0246/01	FORTRAN-IV
NESC0246/02	FORTRAN-II (IBM)

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: OS/360.

NESC0246/01

MVS/SP (IBM 3081).

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHOR

                 George W. Perry
                 Middle South Services, Inc.
                 Box 61000
                 New Orleans, Louisiana  70160

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16. MATERIAL AVAILABLE

NESC0246/01

File name	File description	Records
NESC0246_01.001	This information file	69
NESC0246_01.002	FLOWMODEL FORTRAN source	373
NESC0246_01.003	JCL needed to run job	56
NESC0246_01.004	Test case input	35
NESC0246_01.005	Test case output	1489

NESC0246/02

File name	File description	Records
NESC0246_02.001	INFORMATION	2
NESC0246_02.002	SOURCE&DATA CDC 6600	406
NESC0246_02.003	OUTPUT	1493

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17. CATEGORIES

H. Heat Transfer and Fluid Flow

Keywords: BWR reactors, computer graphics, coolants, fluid flow, two-dimensional.