SIMULATION OF HIGH-TEMPERATURE SWELLING OF URANIUM DIOXIDE AND DEFORMATION BEHAVIOR OF A FUEL ELEMENT
Models and computer codes, developed based on them, for simulating the swelling of uranium dioxide (BARS) and the stress-deformation state of a fuel element (SDS) under high-temperature irradiation are presented. It is shown that when developing a design for high-temperature fuel elements and valida...
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| Veröffentlicht in: | Atomic energy (New York, N.Y.) N.Y.), 2007-09, Vol.103 (3), p.696-705 |
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| container_title | Atomic energy (New York, N.Y.) |
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| creator | GONTAR, A. S NELIDOV, M. V |
| description | Models and computer codes, developed based on them, for simulating the swelling of uranium dioxide (BARS) and the stress-deformation state of a fuel element (SDS) under high-temperature irradiation are presented. It is shown that when developing a design for high-temperature fuel elements and validating their serviceability the quantitative indicator required for the swelling of uranium dioxide in the range .1400C is the change in the external dimensions of the fuel caused by constant formation and growth of bubbles containing gaseous fission products during irradiation. The results of computational investigations using the models indicated are examined. These results eliminate the inconsistency of the data on the effect of the main operating parameters -- the temperature and burnup -- on the radiation characteristics and service life behavior of a fuel element. It is shown that the central channel in the fuel kernel and strengthening of the cladding improve the dimensional stability fuel elements. |
| doi_str_mv | 10.1007/s10512-007-0111-2 |
| format | Article |
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S ; NELIDOV, M. V</creator><creatorcontrib>GONTAR, A. S ; NELIDOV, M. V</creatorcontrib><description>Models and computer codes, developed based on them, for simulating the swelling of uranium dioxide (BARS) and the stress-deformation state of a fuel element (SDS) under high-temperature irradiation are presented. It is shown that when developing a design for high-temperature fuel elements and validating their serviceability the quantitative indicator required for the swelling of uranium dioxide in the range .1400C is the change in the external dimensions of the fuel caused by constant formation and growth of bubbles containing gaseous fission products during irradiation. The results of computational investigations using the models indicated are examined. These results eliminate the inconsistency of the data on the effect of the main operating parameters -- the temperature and burnup -- on the radiation characteristics and service life behavior of a fuel element. 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| ispartof | Atomic energy (New York, N.Y.), 2007-09, Vol.103 (3), p.696-705 |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Applied sciences Channels Computer simulation Energy Energy. Thermal use of fuels Exact sciences and technology Fission nuclear power plants Fission products Fuel elements Fuels High temperature Installations for energy generation and conversion: thermal and electrical energy Irradiation Mathematical models Nuclear fuel elements Nuclear fuels Preparation and processing of nuclear fuels Simulation Swelling Uranium Uranium dioxide |
| title | SIMULATION OF HIGH-TEMPERATURE SWELLING OF URANIUM DIOXIDE AND DEFORMATION BEHAVIOR OF A FUEL ELEMENT |
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