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IAEA0969 RHEIN.

RHEIN, Modular System for Reactor Design Calculation

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1. NAME OR DESIGNATION OF PROGRAM:  RHEIN.
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2. COMPUTERS
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Program name Package id Status Status date
RHEIN IAEA0969/01 Tested 19-DEC-1990

Machines used:

Package ID Orig. computer Test computer
IAEA0969/01 ES-1055 IBM 3090
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3. DESCRIPTION OF PROGRAM OR FUNCTION

RHEIN is a modular reactor code system for neutron physics calculations. It consists of a small number of system codes for execution control, data management, and handling support, as well as of the physical calculation routines. The execution is controlled by input data containing mathematical and physical parameters and simple commands for routine calls and data manipulations. The calculation routines are in tune with one another and the system takes care of the data transfer between them. Cross-section libraries with self shielding parameters are added to the system.
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4. METHOD OF SOLUTION

The calculation routines can be used for solving the following physics problems :
- Calculation of cross-section sets for infinite mediums, taking
  into account chord length.
- Zero-dimensional spectrum calculation in diffusion, P1, or B1
  approximation.
- One-dimensional calculation in diffusion, P1, or collision
  probability approximation.
- Two-dimensional diffusion calculation.
- Cell calculation by THERMOS.
- Zonewise homogenized group collapsing within zero, one, or
  two-dimensional models.
- Normalization, summarizing, etc.
- Output of cross-section sets to off systems Sn and Monte-Carlo
  calculations.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME

On the ES 1055, typical one-dimensional problems need 1 minute CPU.
IAEA0969/01
The test cases included in this package have been executed at NEA-DB on an IBM 3090/600 computer. CPU times required were: 7 seconds (case 1); 2 seconds (case 2); 66 seconds (case 3).
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7. UNUSUAL FEATURES OF THE PROGRAM

Control and data manipulation by simple linguistic expressions. Dynamic storage allocation.
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8. RELATED AND AUXILIARY PROGRAMS

This program system is the continuation of the RHEIN variant for BESM-computers. It has output to Sn and Monte-Carlo programs too.
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9. STATUS
Package ID Status date Status
IAEA0969/01 19-DEC-1990 Tested at NEADB
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10. REFERENCES:
IAEA0969/01, included references:
- C. Reiche, et al.:
  Reactor Code System RHEIN for ESER Computer
  ZfK-668 (February 1989) (in German)
- Program Note:
  Timing package (received November 1990)
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11. MACHINE REQUIREMENTS

Main storage allocation is dynamic, at least  250 kbytes are needed.
IAEA0969/01
Main storage requirements are problem-dependent; typically 600 - 900K bytes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA0969/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  SVS system (ESER  1055).
IAEA0969/01
MVS (IBM 3090/600) with compiler FORTRAN-VS (language level 66).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

Christian Reiche, Hansulrich Barz, Bernd Kunzmann,
Eberhard Seifert, Hartmut Wand,
Academy of Science
Institute of Nuclear Research, Rossendorf
Dresden
Federal Republic of Germany
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16. MATERIAL AVAILABLE
IAEA0969/01
File name File description Records
IAEA0969_01.001 Information File 118
IAEA0969_01.002 Job Control for RHEIN Installation 447
IAEA0969_01.003 RHEIN Source (FORTRAN Level 66) 25647
IAEA0969_01.004 ERF, DERF Function 2285
IAEA0969_01.005 Dummy Timing Routines 15
IAEA0969_01.006 Sample Problem 1 Input 32
IAEA0969_01.007 Sample Problem 2 Input 53
IAEA0969_01.008 Sample Problem 3 Input 32
IAEA0969_01.009 Sample Problem Original Output 1 740
IAEA0969_01.010 Sample Problem Original Output 2 1183
IAEA0969_01.011 Sample Problem Original Output 3 764
IAEA0969_01.012 26 group subgroup library for NINA, SIGMA 47
IAEA0969_01.013 26 group selfshielded library for MIKROS 106
IAEA0969_01.014 Thermal cross-section library for THERMOS 6
IAEA0969_01.015 Delayed Neutron Data library for INKA 4
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17. CATEGORIES
  • K. Reactor Systems Analysis

Keywords: P1-approximation, SN method, cross sections, diffusion, first collision, modular programming, multigroup, perturbation.