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EnglishThe Helium-Cooled Lithium Lead (HCLL) breeding blanket is one of the European blanket designs proposed for DEMO reactor. A tritium transport model is fundamental for the correct assessment of both design and safety, in order to guarantee tritium self-su ffi ciency and to characterize tritium concentrations, inventories and losses. The present 2D transport model takes into account a single breeder unit located in the outboard equatorial module of the HCLL breeding blanket, which is one of the most loaded modules in normal operating conditions. A multi- physics approach has been adopted considering several physics phenomena, providing for buoyancy e ff ect, temperature fi elds, tritium generation rate and velocity pro fi le of lead-lithium and coolant. The transport has been modelled considering advection-di ff usion of tritium into the lead-lithium eutectic alloy, transfer of tritium from the liquid interface towards the steel (adsorption/desorption), di ff usion of tritium inside the steel, transfer of tritium from the steel towards the coolant (recombination/desorption), advection-di ff usion of diatomic tri- tium into the coolant. Tritium concentrations, inventories and losses have been derived under the above spe- ci fi ed phenomena. In particular, the e ff ect of buoyancy forces on the tritium transport has been implemented and compared with the condition without buoyancy
Tritium transport model at breeder unit level for HCLL breeding blanket / Testoni, Raffaella; Candido, Luigi; Utili, Marco; Zucchetti, Massimo. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - (2019).
| Titolo: | Tritium transport model at breeder unit level for HCLL breeding blanket |
| Autori: | |
| Data di pubblicazione: | 2019 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.fusengdes.2019.03.180 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Testoni - SOFT2018_rev_clean.pdf | 2. Post-print / Author's Accepted Manuscript |  | Embargo: 01/04/2021 Richiedi una copia |
http://hdl.handle.net/11583/2730244
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