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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Delafontaine, Serge Ricciardi, Guillaume Collard, Bruno |
| Copyright Year | 2011 |
| Abstract | Significant nuclear fuel assembly design innovations are regularly incorporated to meet the highest expectations in terms of safety, performance and flexibility. Despite the continuous upgrades of fuel designs and materials, the fuel failure rate has not markedly decreased during the last decade, partly because of higher burn-up, longer cycle lengths, mixed cores… Safety aspects give rise to the reduction of contamination and the fuel cladding represents the first containment barrier. It is then necessary to maintain its integrity under all operating conditions. Flow-induced vibrations of fuel rods generating grid-to-rod fretting are the dominant fuel leaker mechanism worldwide. This paper presents a Computational Fluid Dynamics (CFD) simulation of the flow around a fuel rod. The swirls generated by the mixing vanes are reproduced, and the corresponding resulting fluid force excitations are extracted. The computed spectra are compared to envelop spectra obtained by tests on fuel assembly mock-ups in our experimental facilities. |
| Sponsorship | Pressure Vessels and Piping Division |
| Starting Page | 77 |
| Ending Page | 81 |
| Page Count | 5 |
| File Format | |
| ISBN | 9780791844540 |
| DOI | 10.1115/PVP2011-57075 |
| Volume Number | Volume 4: Fluid-Structure Interaction |
| Conference Proceedings | ASME 2011 Pressure Vessels and Piping Conference |
| Language | English |
| Publisher Date | 2011-07-17 |
| Publisher Place | Baltimore, Maryland, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Cycles Computational fluid dynamics Fuels Flow (dynamics) Contamination Fuel rods Design Fluids Nuclear fuels Simulation Spectra (spectroscopy) Flow-induced vibrations Manufacturing Safety Excitation Cladding systems (building) Failure Containment |
| Content Type | Text |
| Resource Type | Article |
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