To access the full text documents, please follow this link:

Numeric implementation of a nucleation, growth and transport model for helium bubbles in lead–lithium HCLL breeding blanket channels: Theory and code development
Batet Miracle, Lluís; Fradera, Jordi; Mas de les Valls Ortiz, Elisabet; Sedano, L.A.
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. GREENER - Grup de recerca d´estudis energètics i de les radiacions
Large helium (He) production rates in liquid metal breeding blankets of a DT fusion reactor might have a significant influence in the system design. Low He solubility together with high local concentrations may create the conditions for He cavitation, which would have an impact in the components performance. The paper states that such a possibility is not remote in a helium cooled lithium–lead breeding blanket design. A model based on the Classical Nucleation Theory (CNT) has been developed and implemented in order to have a specific tool able to simulate HCLL systems and identify the key parameters and sensitivities. The nucleation and growth model has been implemented in the open source CFD code OpenFOAM so that transport of dissolved atomic He and nucleated He bubbles can be simulated. At the current level of development it is assumed that void fraction is small enough not to affect either the hydrodynamics or the properties of the liquid metal; thus, bubbles can be represented by means of a passive scalar. He growth and transport has been implemented using the mean radius approach in order to save computational time. Limitations and capabilities of the model are shown by means of zero-dimensional simulation and sensitivity analysis under HCLL breeding unit conditions.
Àrees temàtiques de la UPC::Energies::Energia nuclear
Liquid metals
Nuclear fusion
Fusió nuclear
Metalls líquids
Attribution-NonCommercial-NoDerivs 3.0 Spain

Show full item record

Related documents

Other documents of the same author

Mas de les Valls Ortiz, Elisabet; Batet Miracle, Lluís; Medina Iglesias, Vicente César de; Fradera, Jordi; Sedano, L.A.
Fradera, Jordi; Sedano, L.A.; Mas de les Valls Ortiz, Elisabet; Batet Miracle, Lluís
Mas de les Valls Ortiz, Elisabet; Fradera, Jordi; Batet Miracle, Lluís
Batet Miracle, Lluís; Reventós Puigjaner, Francesc Josep; Mas de les Valls Ortiz, Elisabet; Fernández, Iván; Veredas, G.; Abellà, Jordi; Sempere Cebrían, Julià; Sanmartí, Manel; Linares, José Ignacio; Sedano, L.A.