| 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 |
| Settore scientifico disciplinare |
INGEGNERIA, FACOLTA' |
| Corso di studi |
INGEGNERIA AEROSPAZIALE |
| Commissione |
| Nome Commissario |
Qualifica |
| Maria Vittoria Salvetti |
Relatore |
| Simone Camarri |
Relatore |
|
| Parole chiave |
- large-eddy
- multi-scale
- variational
- simulation
- cylinder
- circular
- simulations
|
| Data inizio appello |
2007-10-17 |
| Disponibilità |
unrestricted |
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.
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