last modified: 01-MAY-1973 | catalog | categories | new | search |

NEA-0380 MATRA.

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

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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.