Published 1991 | Version v1
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Validation of the thermal-hydraulic program THERMIX based on VELUNA test results

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Description

Automatic translation: Within the framework of safety research for HTR's, the Department of Energy Technology at the University -GH- Duisburg has been dealing with hypothetical air intrusion accidents for several years. These accidents include the extreme ingress of air into the primary circuit and the associated reactions of the corrosive gases with the hot graphitic core internals and the fuel elements. In order to simulate such hypothetical air intrusion accidents with the thermal-hydraulic program THERMIK, a validation based on experimental test results is required. The VELUNA test facility, which is operated in the Department of Energy Technology for the experimental investigation of air intrusion accidents at the HTR, is suitable for this. With this system, tests can be carried out on a 3.6 m high graphite nodule bed (1106 elements, 60 mm) can be carried out. To validate the simulation program to edit: - Adaptation of the VELUNA evaluation program comparative data for the simulation, - Extension of the program system THERMIK of graphite corrosion by air, - Creation of a simulation model for LUNA, - Recalculations of experimental tests on air ingress.

Abstract (German)

Im Rahmen der Sicherheitsforschung für HTR's befaßt sich das Fachgebiet Energietechnik der Universität -GH- Duisburg seit einigen Jahren mit den hypothetischen Lufteinbruchsstörfällen. Zu diesen Störfällen zählt der extreme Lufteinbruch in den Primärkreislauf und die damit verbundenen Reaktionen der korrosiven Gase mit den heißen graphitischen Coreeinbauten und den Brennelementen. Zur Simulation solcher hypothetischer Lufteinbruchsstörfälle mit dem Thermohydraulikprogramm THERMIK ist eine Validierung anhand experimenteller Versuchsergebnisse erforderlich. Hierzu eignet sich die Versuchsanlage VELUNA, die im Fachgebiet Energietechnik zur experimentellen Untersuchung der Lufteinbruchsstörfälle beim HTR betrieben wird. Mit dieser Anlage können Versuche an einer 3,6 m hohen Graphitkugelschüttung (1106 Elemente, 60 mm) durchgeführt werden. Zur Validierung des Simulationsprogrammes zu bearbeiten: - Anpassung des VELUNA-Auswerteprogrammes Vergleichsdaten für die Simulation, - Erweiterung des Programmsystems THERMIK der Graphitkorrosion durch Luft, - Erstellung eines Simulationsmodells für LUNA, - Nachrechnungen experimenteller Versuche zum Lufteinbruch.

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Additional titles

Original title (German)
Validierung des Thermohydraulikprogrammes THERMIX anhand von VELUNA-Versuchsergebnissen

Publishing Information

Imprint Pagination
71 p.
Report number
INIS-DE--22M0885

INIS

Country of Publication
Germany
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54017956
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
AIR; CORROSION; EVALUATION; FEDERAL REPUBLIC OF GERMANY; FORSCHUNGSZENTRUM JUELICH; FUEL ELEMENTS; GRAPHITE; HTGR TYPE REACTORS; SAFETY; TEST FACILITIES; THERMAL HYDRAULICS
Descriptors DEC
CARBON; CHEMICAL REACTIONS; DEVELOPED COUNTRIES; ELEMENTS; EUROPE; FLUID MECHANICS; FLUIDS; GAS COOLED REACTORS; GASES; GERMAN FR ORGANIZATIONS; GRAPHITE MODERATED REACTORS; HYDRAULICS; MECHANICS; MINERALS; NATIONAL ORGANIZATIONS; NONMETALS; REACTOR COMPONENTS; REACTORS; WESTERN EUROPE

Optional Information

Notes
10 refs., figs., tabs.