Tesi etd-05032006-092506 |
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Tipo di tesi
Tesi di laurea specialistica
Autore
Deri, Enrico
URN
etd-05032006-092506
Titolo
Development of condensation models in Cast3M and TONUS and qualification against experimental data
Dipartimento
INGEGNERIA
Corso di studi
INGEGNERIA NUCLEARE E DELLA SICUREZZA INDUSTRIALE
Relatori
relatore Prof. Ambrosini, Walter
relatore Dott. Forgione, Nicola
relatore Prof. Oriolo, Francesco
relatore Dott. Forgione, Nicola
relatore Prof. Oriolo, Francesco
Parole chiave
- analogy
- cfd
- condensation
- diffusion
Data inizio appello
04/05/2006
Consultabilità
Non consultabile
Data di rilascio
04/05/2046
Riassunto
A six months activity has been performed in the Labotatoire d'études des Transferts et Mécanique des Fluides in CEA Saclay.
The first part of the work is on TONUS code. In the general aim of a reverification of code models to improve code's documentation a verification of the CONDENS procedure is done.Various condensation data bases are taken in account using integral values (total heat flux, condensation flow rate). The new CHIL1 diffusive model of TONUS code is tested and results are compared to the old one.
The second part of the work is on CAST3M code. It is devoted to the verification of the new low Mach number asymptotic compressible solver. Since this solver is new, thermal hydraulic model had to be tested against an analytical solution for a laminar boundary layer: a solution is obtained in a 2D test case by integrating the balance equations through an iterative method; then a CFD simulation of the case is done using the CAST3M solver. Good results are achieved in the comparison with the analytical model. More comparison is done with satisfactory agreement against correlations available in literature for boundary layer thickness.
The first part of the work is on TONUS code. In the general aim of a reverification of code models to improve code's documentation a verification of the CONDENS procedure is done.Various condensation data bases are taken in account using integral values (total heat flux, condensation flow rate). The new CHIL1 diffusive model of TONUS code is tested and results are compared to the old one.
The second part of the work is on CAST3M code. It is devoted to the verification of the new low Mach number asymptotic compressible solver. Since this solver is new, thermal hydraulic model had to be tested against an analytical solution for a laminar boundary layer: a solution is obtained in a 2D test case by integrating the balance equations through an iterative method; then a CFD simulation of the case is done using the CAST3M solver. Good results are achieved in the comparison with the analytical model. More comparison is done with satisfactory agreement against correlations available in literature for boundary layer thickness.
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