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NEA-0380 MATRA.

MATRA, Void Simulation in Steam and H2O Mixture Channel in Accident

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  MATRA.
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2. COMPUTERS
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Program name Package id Status Status date
MATRA NEA-0380/01 Tested 01-MAY-1973

Machines used:

Package ID Orig. computer Test computer
NEA-0380/01 IBM 370 series IBM 370 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

The program simulates the voiding following an accident, of a constant area channel, either heated or  adiabatic in which a steam-water mixture flows. Subcooled water may  be present in the initial part of the channel.
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4. METHOD OF SOLUTION

A partially simplified model has been used for the non-stationary hydrodynamics of a two-phase flow, based on mass  and energy conservation equations. The deriving system of quasi-linear partial differential equations has been integrated by using the method of the characteristic curves.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME

Depends very much on data. A sample problem took 50 sec on UNIVAC 1108.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-0380/01 01-MAY-1973 Tested at NEADB
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10. REFERENCES: - Report CISE-R-271 (February 1969).
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11. MACHINE REQUIREMENTS:  Core memory 16k words.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0380/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  UNIVAC EXEC-8. IBM 370/O.S.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR: L. Calicchio and M. Muscettola, C.S.I.E.
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16. MATERIAL AVAILABLE
NEA-0380/01
File name File description Records
NEA0380_01.001 FORTRAN SOURCE PROGRAMME 1458
NEA0380_01.002 SAMPLE PROBLEM 26
NEA0380_01.003 SAMPLE OUTPUT 761
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: accidents, heat transfer, loss-of-coolant accident, steam, two-phase flow, water.