Organization / Localization: KTH-NPS Facility Description: Metallic melt (Sn-Bi alloy) infiltration into the porous particulate debris (spherical particles of Cu, Stainless steel) and solidification. Melt delivery from the top of debris. Excluding wall effect Test Identification: MRSPOD-Exx SA-Related Topics / Phenomena:Corium simulant material infilatation and heat transfer in porous media. Effect of solidification and wettability Measured Parameters: Melt penetration depth, melt penetration dynamic, melt temperature, debris bed temperature, video observation, melt pool height. Modelling: Melt penetration depth and dynamic Simulation Code: MPS, COMSOL Experimental Research Program: Experimental program "Invstigation of Cooling Phenomena of High Temperature Molten Core" for Nuclear regulation Authority (NRA) of Japan; National program "Accident Phenomena of Risk Importance" (APRI) supported by consortium of SSM and NPPs in Sweden. Link to PIRT:
References: [1] Akitoshi Hotta, Miyuki Akiba, Akinobu Morita, Alexander Konovalenko, Walter Villanueva, Sevostian Bechta, Andrei Komlev, Sachin Thakre, Seyed Mohsen Hoseyni, Per Sköld, Toshinori Matsumoto, Tomoyuki Sugiyama & Michael Buck, “Experimental and Analytical Investigation of Formation and Cooling Phenomena in High Temperature Debris Bed”, Journal of Nuclear Science and Technology, 57:4, 353-369, 2019, DOI: 10.1080/00223131.2019.1691078
[2] W. Villanueva, S.M. Hoseyni, S. Bechta, A. Hotta. Experimental investigation of melt infiltration and solidification in a pre-heated particle bed. Phys. Fluids 34, 123326 (2022); doi: 10.1063/5.0124983. IP/Copyright Situation: None
Implemented as part of the Seaknot EU funded project (HORIZON-EURATOM-2021-NRT-01 under Grant Agreement No. 101060327) - WP2.6 UNIPI (2024-2026)