NEA-0261 EQUSTA.
EQUSTA, Thermodynamics Analysis and Mechanical Analysis for Fast Reactor Accident
NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| EQUSTA | NEA-0261/01 | Tested | 01-AUG-1969 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0261/01 | IBM 360 series | IBM 360 series |
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3. NATURE OF PHYSICAL PROBLEM SOLVED
For the analysis of destructive nuclear excursions in fast reactors, the equation of state (P, T, rho, E relation) and the mechanical work due to isentropic expansion are calculated for any material from some well-known generalized thermodynamic tables, using the principle of corresponding states.
For the analysis of destructive nuclear excursions in fast reactors, the equation of state (P, T, rho, E relation) and the mechanical work due to isentropic expansion are calculated for any material from some well-known generalized thermodynamic tables, using the principle of corresponding states.
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4. METHOD OF SOLUTION
The thermodynamic tables are composed into a data library and the programmme computes the required relationships by linear interpolation procedures constrained only by one of the conditions, temperature=const, density=const. or entropy=const.
The first option yields the (p,v) isotherms; the second option yields p as a function of t and e at constant volume; the third option yields the (p,t,e) adiabats and mechanical work.
The thermodynamic tables are composed into a data library and the programmme computes the required relationships by linear interpolation procedures constrained only by one of the conditions, temperature=const, density=const. or entropy=const.
The first option yields the (p,v) isotherms; the second option yields p as a function of t and e at constant volume; the third option yields the (p,t,e) adiabats and mechanical work.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
The reduced pressure and temperature and the critical compressibility factor cannot be allowed far beyond the ranges covered by the data,
ie., 0.01 < pr < 30
0.5 < tr < 15
0.24 < zc < 0.3
Only small extrapolations outside these limits are permissible.
The reduced pressure and temperature and the critical compressibility factor cannot be allowed far beyond the ranges covered by the data,
ie., 0.01 < pr < 30
0.5 < tr < 15
0.24 < zc < 0.3
Only small extrapolations outside these limits are permissible.
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10. REFERENCES
REFERENCES.
- J. Randles:
Prediction of the Equations of State of Reactor Materials for
Destructive Excursion Analysis
EUR 4139E (1969).
- R.J. Jaarsma and J. Randles:
EQUSTA, A FORTRAN 4 Computer Programme for the Prediction of
Equations of State Using the Principle of Corresponding States
EUR-4147E (1969).
REFERENCES.
- J. Randles:
Prediction of the Equations of State of Reactor Materials for
Destructive Excursion Analysis
EUR 4139E (1969).
- R.J. Jaarsma and J. Randles:
EQUSTA, A FORTRAN 4 Computer Programme for the Prediction of
Equations of State Using the Principle of Corresponding States
EUR-4147E (1969).
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NEA-0261/01
| File name | File description | Records |
|---|---|---|
| NEA0261_01.001 | SOURCE & DATA 360/65 | 1844 |
| NEA0261_01.002 | OUTPUT | 2083 |
Keywords: accidents, excursions, fast reactors, isentropic processes, reactor safety, thermodynamics.