The Breeding Blanket is a fundamental component of a nuclear fusion reactor and the Water-Cooled Lead Lithium (WCLL) blanket is one of the possible solutions proposed. In this concept, liquid lithium-lead eutectic alloy (PbLi) serves as tritium breeder, tritium carrier and neutron multiplier. The liquid metal is distributed within the breeding zone by two co-axial rectangular channels and, interacting with the reactor magnetic field, leads to the arising of MagnetoHydroDynamic (MHD) effects. In this work, the general-purpose CFD code Ansys CFX 18.2 is used to study this uncommon configuration, modelled as a prototypical square annular channel. The study covers a wide range of magnetic field intensity (up to ) and two values for the wall conductance ratio ( and ) representing, respectively, the ideal insulated case and one more closely approaching the WCLL manifold actual conditions. For both these scenarios, characteristic flow features and their evolution with increasing magnetic field are discussed. A correlation is found linking the pressure loss in the studied configuration and an equivalent square channel through a corrective factor , which exhibits an asymptotic behavior for equal to and .
MHD forced convection flow in dielectric and electro-conductive rectangular annuli / Siriano, S.; Tassone, A.; Caruso, G.; Del Nevo, A.. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - 159:(2020), pp. 1-7. [10.1016/j.fusengdes.2020.111773]
MHD forced convection flow in dielectric and electro-conductive rectangular annuli
Siriano S.
Primo
;Tassone A.Secondo
;Caruso G.Penultimo
;
2020
Abstract
The Breeding Blanket is a fundamental component of a nuclear fusion reactor and the Water-Cooled Lead Lithium (WCLL) blanket is one of the possible solutions proposed. In this concept, liquid lithium-lead eutectic alloy (PbLi) serves as tritium breeder, tritium carrier and neutron multiplier. The liquid metal is distributed within the breeding zone by two co-axial rectangular channels and, interacting with the reactor magnetic field, leads to the arising of MagnetoHydroDynamic (MHD) effects. In this work, the general-purpose CFD code Ansys CFX 18.2 is used to study this uncommon configuration, modelled as a prototypical square annular channel. The study covers a wide range of magnetic field intensity (up to ) and two values for the wall conductance ratio ( and ) representing, respectively, the ideal insulated case and one more closely approaching the WCLL manifold actual conditions. For both these scenarios, characteristic flow features and their evolution with increasing magnetic field are discussed. A correlation is found linking the pressure loss in the studied configuration and an equivalent square channel through a corrective factor , which exhibits an asymptotic behavior for equal to and .File | Dimensione | Formato | |
---|---|---|---|
Siriano_postprint_MHD_2020.pdf
Open Access dal 02/11/2022
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
890.56 kB
Formato
Adobe PDF
|
890.56 kB | Adobe PDF | |
Siriano_MHD_2020.pdf
solo gestori archivio
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
4.02 MB
Formato
Adobe PDF
|
4.02 MB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.