Tesi etd-02122013-113003 |
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Tipo di tesi
Tesi di laurea magistrale
Autore
MACADDINO, FABIO ANTONINO
URN
etd-02122013-113003
Titolo
INFLUENCE OF BOUNDARY LAYER THICKNESS ON THE NEAR-WAKE FLOW OF AN AXISYMMETIC BLUNT BASED BODY IN LAMINAR REGIME
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA AEROSPAZIALE
Relatori
relatore Prof. Salvetti, Maria Vittoria
relatore Prof. Buresti, Guido
relatore Ing. Mariotti, Alessandro
relatore Prof. Buresti, Guido
relatore Ing. Mariotti, Alessandro
Parole chiave
- axisymmetric blunt based body
- DNS
- laminar regime
- OpenFoam
Data inizio appello
05/03/2013
Consultabilità
Non consultabile
Data di rilascio
05/03/2053
Riassunto
1 Introduction 2
1.1 Flow Regimes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Goals & Outline . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Geometry and Numerical Methodology 7
2.1 Geometry and Numerical Set-up . . . . . . . . . . . . . . . . . 7
2.2 Numerical Model . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Post-Processing . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Mesh and First Results 12
3.1 Mesh Sensitivity Analysis . . . . . . . . . . . . . . . . . . . . 12
3.2 Results: Re = 300 . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Results: Re = 800 . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 Results: Re = 1500 . . . . . . . . . . . . . . . . . . . . . . . . 19
4 Investigation On The Axisymmetric Regime 20
4.1 Autosimilarity Analysis . . . . . . . . . . . . . . . . . . . . . . 20
4.2 Curvature Analysis . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Delta Analysis: Dierent Body Lengths - Inlet Uniform . . . . 24
4.4 Delta Analysis: Dierent Body Lengths - Inlet = 0:1 . . . . 30
4.5 Delta Analysis: Same Body Length=2D -Dierent Inlet Ve-
locity Pro le . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
1.1 Flow Regimes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Goals & Outline . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Geometry and Numerical Methodology 7
2.1 Geometry and Numerical Set-up . . . . . . . . . . . . . . . . . 7
2.2 Numerical Model . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Post-Processing . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Mesh and First Results 12
3.1 Mesh Sensitivity Analysis . . . . . . . . . . . . . . . . . . . . 12
3.2 Results: Re = 300 . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Results: Re = 800 . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 Results: Re = 1500 . . . . . . . . . . . . . . . . . . . . . . . . 19
4 Investigation On The Axisymmetric Regime 20
4.1 Autosimilarity Analysis . . . . . . . . . . . . . . . . . . . . . . 20
4.2 Curvature Analysis . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Delta Analysis: Dierent Body Lengths - Inlet Uniform . . . . 24
4.4 Delta Analysis: Dierent Body Lengths - Inlet = 0:1 . . . . 30
4.5 Delta Analysis: Same Body Length=2D -Dierent Inlet Ve-
locity Pro le . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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