ETD system

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Tesi etd-02112014-223836


Thesis type
Tesi di laurea magistrale
Author
ANGELUCCI, MORENA
URN
etd-02112014-223836
Title
Validation of a Fluid-Structure Interaction 2D numerical model with analytical solution and experimental tests
Struttura
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA NUCLEARE E DELLA SICUREZZA
Commissione
relatore Ambrosini, Walter
relatore Sargentini, Lucia
relatore Magnaud, Jean-Paul
relatore Forgione, Nicola
relatore Ing. Monavon, Arnault
Parole chiave
  • Free vibration
  • Hexagonal Geometry
  • Fluid Structure Interaction
Data inizio appello
03/03/2014;
Consultabilità
completa
Riassunto analitico
This work is related to fluid-structure interaction analyses for high confined configurations,<br>as in a SFR core.<br>Sudden liquid or gas evacuation between assemblies could lead to overall core<br>movements (flowering and compaction) causing variations of core reactivity. The<br>comprehension of the structure behavior during the evacuation could improve the<br>knowledge about some SCRAMs for negative reactivity occurred in Phénix reactor<br>and could contribute on the study of the dynamic behavior of FBR core.<br>An experimental facility representing a portion of core (PISE-2C) was designed<br>for this purpose at CEA-Saclay. Another experimental apparatus (PISE-<br>1A) composed by one hexagonal rod was also designed to test the dynamic characteristics.<br>A 2D numerical model is also developed to resolve Navier-Stokes equations<br>coupled with structure dynamic equation in order to analyze some FSI mechanisms.<br>The numerical method is validated by the comparison with an analytical model<br>existing in literature and another one specifically developed and more related to<br>phenomena in our concern. A comparison with experimental results is attempted<br>too.
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