NEA-0543 GGTC-ENEL.
GGTC-ENEL, MultiGroup Neutron Spectra in P1, B1, B2, B3 Approximation and Thermos Calculation
NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, 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, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| GGTC-ENEL | NEA-0543/02 | Tested | 21-SEP-1981 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0543/02 | IBM 3033 | IBM 3033 |
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4. METHOD OF SOLUTION
Is the same as GGC-4 with the following improvements:
1. In the fast section (GAM-II) an advanced intermediate resonance method has been introduced which can be used, optionally, instead of the Nordheim one.
2. In thermal section, which originally was made up only by GATHER, an improved version of the THERMOS code has been inserted. The most relevant improvements are:
i) It takes into account the Doppler broadening.
ii) An efficient use of variable dimensioning.
iii) Improvements of iterative procedure.
3. The combining section has been widely modified to handle data coming from THERMOS and to punch some type of data which are directly utilizable for the input of diffusion codes (for instance SQUID and TRITON) and/or transport codes ANISN and DOT.
Is the same as GGC-4 with the following improvements:
1. In the fast section (GAM-II) an advanced intermediate resonance method has been introduced which can be used, optionally, instead of the Nordheim one.
2. In thermal section, which originally was made up only by GATHER, an improved version of the THERMOS code has been inserted. The most relevant improvements are:
i) It takes into account the Doppler broadening.
ii) An efficient use of variable dimensioning.
iii) Improvements of iterative procedure.
3. The combining section has been widely modified to handle data coming from THERMOS and to punch some type of data which are directly utilizable for the input of diffusion codes (for instance SQUID and TRITON) and/or transport codes ANISN and DOT.
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6. TYPICAL RUNNING TIME
A complex problem relating to three group cross sections of a BWR fuel element requires 19 minutes and 47 seconds of IBM 370/158. Of this time, 2 minutes and 27 seconds are required by GAM and GATHER, 17 minutes and 12 seconds for repeated cases of THERMOS and 8 seconds for combining. Note that this calculation has been carried out using, in the fast section (GAM-II) the Nordheim method.
A complex problem relating to three group cross sections of a BWR fuel element requires 19 minutes and 47 seconds of IBM 370/158. Of this time, 2 minutes and 27 seconds are required by GAM and GATHER, 17 minutes and 12 seconds for repeated cases of THERMOS and 8 seconds for combining. Note that this calculation has been carried out using, in the fast section (GAM-II) the Nordheim method.
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8. RELATED AND AUXILIARY PROGRAMS
The same as GGC-4 and THERMOS. Moreover a new library maker for THERMOS named ETHEL, an acronym for ENEL THERMOS Library maker, has been realized. The most relevant characteristics of ETHEL are:
1. The scattering matrices can be calculated not only by means of free gas and Nelkin models, but also the Koppel-Young model.
2. It has the possibility of considering the calculus of the matrices relating to the isotropic scattering with a correction of transport type.
3. Beside the generation of a new library tape, ETHEL can update an old library tape.
SETINP: Produces a complete input data set for the code GGTC-E. It reduces considerably the work of input preparation when applied to BWRs. For example, 369 complicated input cards can be reduced to 26 much simpler cards, for a typical BWR case.
SETINP performs detailed error checks on the input cards. This feature is particularly convenient when completely automatic input preparation is not possible (no LWR or LWR with special features, etc.) SETINP requires 170k bytes of main storage on IBM 370/158 and one peripheral unit.
The same as GGC-4 and THERMOS. Moreover a new library maker for THERMOS named ETHEL, an acronym for ENEL THERMOS Library maker, has been realized. The most relevant characteristics of ETHEL are:
1. The scattering matrices can be calculated not only by means of free gas and Nelkin models, but also the Koppel-Young model.
2. It has the possibility of considering the calculus of the matrices relating to the isotropic scattering with a correction of transport type.
3. Beside the generation of a new library tape, ETHEL can update an old library tape.
SETINP: Produces a complete input data set for the code GGTC-E. It reduces considerably the work of input preparation when applied to BWRs. For example, 369 complicated input cards can be reduced to 26 much simpler cards, for a typical BWR case.
SETINP performs detailed error checks on the input cards. This feature is particularly convenient when completely automatic input preparation is not possible (no LWR or LWR with special features, etc.) SETINP requires 170k bytes of main storage on IBM 370/158 and one peripheral unit.
NEA-0543/02
SETINP Automatic input generation for GGTC-ENEL for LWR bundle cases.[ top ]
10. REFERENCES
- J. Adir and K. D. Lathrop:
Theory of Methods Used In the GGC-4 Multigroup Cross Sections Code GA-9021 (1968).
- O. Chiovato, S. Corno and F. Di Pasquantonio:
An Improved Intermediate Resonance Method for Heterogeneous Media Annals of Nuclear Energy, vol. 481977, pp.91-106.
- H.C. Honeck:
THERMOS. A Thermalization Transport Theory Code for Reactor
Lattice Calculations
BNL-5826.
- A. Baldacci and F. Labriola:
Analisi dello spettro neutronico, eccetera, thesis, Universita di Pisa (1972).
- O. Chiovato and F. Di Pasquantonio:
A New Version of GGC Code including an Improved Intermediate
Resonance Method and a Modified THERMOS Code
ENEL-CRTN- N1-4 (June, 1977).
- J. Adir and K. D. Lathrop:
Theory of Methods Used In the GGC-4 Multigroup Cross Sections Code GA-9021 (1968).
- O. Chiovato, S. Corno and F. Di Pasquantonio:
An Improved Intermediate Resonance Method for Heterogeneous Media Annals of Nuclear Energy, vol. 481977, pp.91-106.
- H.C. Honeck:
THERMOS. A Thermalization Transport Theory Code for Reactor
Lattice Calculations
BNL-5826.
- A. Baldacci and F. Labriola:
Analisi dello spettro neutronico, eccetera, thesis, Universita di Pisa (1972).
- O. Chiovato and F. Di Pasquantonio:
A New Version of GGC Code including an Improved Intermediate
Resonance Method and a Modified THERMOS Code
ENEL-CRTN- N1-4 (June, 1977).
NEA-0543/02, included references:
- E. Biscaretti, E. Brega and O. ChiovatoNew Complete How to Use of the Code GGTC-ENEL, Including the
Facilities of Automatic Input Generation Offered by the new
Routine SETINP. N5/81/02 (January, 1981)
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NEA-0543/02
| File name | File description | Records |
|---|---|---|
| NEA0543_02.001 | INFORMATION FILE | 29 |
| NEA0543_02.002 | GAM LIBRARY | 2650 |
| NEA0543_02.003 | GATHER LIBRARY | 2689 |
| NEA0543_02.004 | THERMOS LIBRARY | 130 |
| NEA0543_02.005 | JCL (SETINP + GGTC) | 84 |
| NEA0543_02.006 | SOURCE SETINP | 2456 |
| NEA0543_02.007 | INPUT SAMPLE PROBLEM 1 | 27 |
| NEA0543_02.008 | INPUT SAMPLE PROBLEM 2 | 368 |
| NEA0543_02.009 | INPUT SAMPLE PROBLEM 3 | 312 |
| NEA0543_02.010 | OUTPUT SAMPLE PROBLEM 1 | 369 |
| NEA0543_02.011 | OUTPUT SAMPLE PROBLEM 2 | 369 |
| NEA0543_02.012 | OUTPUT SAMPLE PROBLEM 3 | 369 |
| NEA0543_02.013 | SOURCE GGTC | 14823 |
| NEA0543_02.014 | SUBROUTINES (LINK8,PCHCRO) | 278 |
| NEA0543_02.015 | SUBROUTINE TITIME | 18 |
| NEA0543_02.016 | INPUT SAMPLE PROBLEM | 369 |
| NEA0543_02.017 | PUNCHED OUTPUT | 160 |
| NEA0543_02.018 | PRINTED OUTPUT OF SAMPLE PROBLEM | 6406 |
Keywords: Doppler broadening, cross sections, iterative methods, multigroup, neutron spectra, resonance, resonance integrals, thermal neutrons.