Sistema ETD

banca dati delle tesi e dissertazioni accademiche elettroniche

 

Tesi etd-09202007-111526


Tipo di tesi
Tesi di laurea specialistica
Autore
ANDREONI, STEFANO
URN
etd-09202007-111526
Titolo
Simulations of the flow around a circular cylinder by variational multi-scale large-eddy simulation
Struttura
INGEGNERIA
Corso di studi
INGEGNERIA AEROSPAZIALE
Commissione
Relatore Salvetti, Maria Vittoria
Relatore Camarri, Simone
Parole chiave
  • large-eddy
  • multi-scale
  • variational
  • simulation
  • cylinder
  • circular
  • simulations
Data inizio appello
17/10/2007;
Disponibilità
completa
Riassunto analitico
The aim of the present work is to validate and investigate the behaviour of a Variational Multiscale formulation (VMS) in the Large Eddy Simulation (LES) of the flow around a circular cylinder at Reynolds number, based on the free-stream velocity and on the diameter, equal to 3900.

Simulations are carried out with three different eddy-viscosity closure models. Furthermore, the effect of grid resolution investigated, by using two different grid: a coarser grid of about 2.9*10^5 nodes and a finer one with approximately 1.13*10^6 nodes.

For all simulations comparisons with the experimental data and with the results of the other LES in the letterature are provided.
File