German Contribution to Item 2 of the Agenda “Status of ... - IAEA
German Contribution to Item 2 of the Agenda “Status of ... - IAEA
German Contribution to Item 2 of the Agenda “Status of ... - IAEA
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Lehrstuhl für Reak<strong>to</strong>rsicherheit und –technik<br />
Univ.-Pr<strong>of</strong>. Dr. rer. nat. Hans-Josef Allelein<br />
Institut für Energie- und Klimaforschung<br />
Nukleare Entsorgung und Reak<strong>to</strong>rsicherheit (IEK-6)<br />
Pebble Flow in SHUFLE<br />
• The laminar flow paths <strong>of</strong> fuel pebbles in SHUFLE are simulated by propagating<br />
smaller voids which are created at <strong>the</strong> core bot<strong>to</strong>m when discharging pebbles<br />
• SHUFLE processes flow lines measured experimentally <strong>of</strong> created by a code based<br />
on real physics (e.g. DEM)<br />
• Main purpose is <strong>to</strong> display fuel movement in larger framework (e.g. HCP)<br />
Fig.: Measured flow paths [1]<br />
Fig.: Silo drainage [2]<br />
[1] Yang, X.: Experimental Investigation on Feasibility <strong>of</strong> Two-Region-Designed Pebble-Bed High-Temperature Gas-Cooled Reac<strong>to</strong>r, INET, 2008<br />
[2] Kamrin K., Rycr<strong>of</strong> C., Bazant M., The s<strong>to</strong>chastic flow rule: a multi-scale model for granular plasticity, MIT. Cambridge, 2007<br />
H.-J. Allelein<br />
TWG-GCR-23<br />
March 5-7, 2013, Vienna<br />
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