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Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-06302014-151156


Tipo di tesi
Tesi di laurea magistrale
Autore
LONIGRO, EUGENIO
Indirizzo email
ironmadness49@hotmail.com, eukun@hotmail.it
URN
etd-06302014-151156
Titolo
Analisi CFD di un anfibio ultraleggero PrandtlPlane: validazione attraverso dati sperimentali di galleria del vento
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA AEROSPAZIALE
Relatori
relatore Dott. Cipolla, Vittorio
relatore Prof. Frediani, Aldo
Parole chiave
  • CFD
  • IDINTOS
  • PrandtlPlane
  • seaplane
  • validazione sperimentale galleria del vento
Data inizio appello
16/07/2014
Consultabilità
Completa
Riassunto
This thesis, part of the IDINTOS project has the purpose to calibrate and validate the CFD methods, analyzing and trying to replicate the results previously obtained at the PoliMi wind tunnel.
In the present work the STAR-CCM+ software, by Cd-Adapco, has been used to simulate a variety of cases. First the mesh has been validated, looking for a stability condition, changing the size of control volume and refining or making coarser both the wing meshes. Since the stability dimensions have been found, comparing the results given on some aerodynamic coefficients and choosing the dimensions which gave the stable results for all the coefficients, the chosen mesh has been used to simulate free air and wind tunnel conditions.
The model has first been simulated in 1:1 scale, free air and cruise conditions, with a fully turbulent flow, then the geometry has progressively been translated to the wind tunnel conditions, scaling dimensions to 1:4, adding the pylon support and then the wind tunnel walls.
To completely validate the data obtained at the wind tunnel facility, different kind of solvers have been used, switching from the k-ε full turbulence model, to the k-ω with fixed transition model.
Once the physics have been set, several conditions of α and β wind incidence angles have been tested and recreated, managing to a redefinition of the aerodynamic surfaces that rule the lateral directional dynamics (posterior wing fences, tail fin). 
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