In this report we discuss the development of the FEM-LCORE code for the study of three-dimensional thermal hydraulics of Iiquid metal reactors. The code solves the standard Navier-Stokes equations with turbulence models in the reactor upper and lower plena and a special model in the core where all the sub-channel assembly details are summarized in parametric coefficients. Advances in turbulence modeling are reported. In particular, the kω model and a new four-parameter turbulence model are discussed. Moreover, the implementation of parallel computing features in the code with the use of PETSc libraries is illustrated. With this new version of the code we investigate some assembly blockage events that can occur in the core in incidental situations and compare different behaviors for closed and open core models.

Development and validation of FEM-LCORE code for the thermal hydraulics of open cores

Voukelatou, K.
2011

Abstract

In this report we discuss the development of the FEM-LCORE code for the study of three-dimensional thermal hydraulics of Iiquid metal reactors. The code solves the standard Navier-Stokes equations with turbulence models in the reactor upper and lower plena and a special model in the core where all the sub-channel assembly details are summarized in parametric coefficients. Advances in turbulence modeling are reported. In particular, the kω model and a new four-parameter turbulence model are discussed. Moreover, the implementation of parallel computing features in the code with the use of PETSc libraries is illustrated. With this new version of the code we investigate some assembly blockage events that can occur in the core in incidental situations and compare different behaviors for closed and open core models.
Rapporto tecnico;Fluidodinamica;Reattori nucleari veloci;Generation IV reactors
File in questo prodotto:
File Dimensione Formato  
NNFISS-LP3-016.pdf

accesso aperto

Licenza: Creative commons
Dimensione 8.17 MB
Formato Adobe PDF
8.17 MB Adobe PDF Visualizza/Apri
RdS-2011-002 Frontespizio.pdf.pdf

accesso aperto

Licenza: Creative commons
Dimensione 213.5 kB
Formato Adobe PDF
213.5 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/5484
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact