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| NKS Programme Area: | NKS-R | | Research Area: | Severe accidents | | Report Number: | NKS-313 | | Report Title: | COOLOCE-12 debris bed coolability experiment: Cone on a cylindrical base | | Activity Acronym: | DECOSE | | Authors: | Eveliina Takasuo, Tuomo Kinnunen, Taru Lehtikuusi, | | Abstract: | The COOLOCE-12 experiment addressed a debris bed geometry that has a conical heap on top of a cylindrical base, i.e. part of the debris is distributed against the walls of the spreading area but the top part of the debris has the conical (heap-like) shape. The height of the conical part was half of the total height. The dryout power for this configuration was 17–26 kW (1929–2897 kW/m3) for the pressure range of 1–4 bar. Comparisons to other debris bed geometry variations, namely, the fully conical bed and the top-flooded cylindrical bed, have been made. The results suggest that the cone on a base geometry has a comparatively high dryout power and coolability. In general, the results clarify the effect of the multi-dimensional flooding and the flow mode in relation to the effects of test bed height and the overall geometry and will be utilized in the validation and development of simulation models and codes. | | Keywords: | severe accident, core debris, coolability, dryout heat flux, COOLOCE test facility | | Publication date: | 17 Jun 2014 | | ISBN: | ISBN 978-87-7893-392-8 | | Number of downloads: | 2437 | | Download: |  NKS-313.pdf |
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