IAEA0969 RHEIN.

RHEIN, Modular System for Reactor Design Calculation

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, 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 UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: RHEIN.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.

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.