Thesis etd-01162015-192239 |
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Thesis type
Tesi di laurea magistrale
URN
etd-01162015-192239
Thesis title
Meshing guide-lines for high fidelity CFD: an industrial application
Department
INGEGNERIA DELL'ENERGIA, DEI SISTEMI, DEL TERRITORIO E DELLE COSTRUZIONI
Course of study
INGEGNERIA ENERGETICA
Supervisors
.
relatore Prof. Ambrosini, Walter
relatore Prof. Forgione, Nicola
correlatore Ing. Komen, Ed
correlatore Dott. Shams, Afaque
relatore Prof. Forgione, Nicola
correlatore Ing. Komen, Ed
correlatore Dott. Shams, Afaque
Keywords
- CFD
- DNS
- Fluent
- fluidodinamica
- guideline
- LES
- Mesh
- nuclear
- OpenFoam
- RANS
- ROCOM
- Star-CCM
Graduation session start date
26/02/2015
Availability
Full
Abstract (Inglese)
Abstract (Italiano)
Are investigated characteristic dimensions of turbulent flows in order to define a meshing guideline for high fidelity CFD (DNS, LES).
For this purpose in the second chapter, are introduced fundaments of turbulent fields providing a general analysis of turbulent flows and introducing parameters used for turbulent analysis. In the third chapter are reviewed numerical methods for turbulence modeling, with particular regard to those applied in Chapter 5.
The mesh guide-line is proposed in chapter four: after a review on turbulence scales characterization, are investigated DNS databases of relevant industrial cases where turbulence plays an important role. An in-depth analysis is provided for high fidelity methods such as LES and DNS.
In the fifth chapter are applied knoweladges of previous chapters on a industrial case of Main Steam Line Break. Results of LES computation are validated thanks to the experimental data of ROCOM test 2.1.
For this purpose in the second chapter, are introduced fundaments of turbulent fields providing a general analysis of turbulent flows and introducing parameters used for turbulent analysis. In the third chapter are reviewed numerical methods for turbulence modeling, with particular regard to those applied in Chapter 5.
The mesh guide-line is proposed in chapter four: after a review on turbulence scales characterization, are investigated DNS databases of relevant industrial cases where turbulence plays an important role. An in-depth analysis is provided for high fidelity methods such as LES and DNS.
In the fifth chapter are applied knoweladges of previous chapters on a industrial case of Main Steam Line Break. Results of LES computation are validated thanks to the experimental data of ROCOM test 2.1.
File
| Nome file | Dimensione |
|---|---|
| 1_Introduction.pdf | 88.77 Kb |
| 2_Turbulence.pdf | 1.16 Mb |
| 3_Methods.pdf | 731.42 Kb |
| 4_Meshing.pdf | 2.09 Mb |
| 5_LES.pdf | 4.01 Mb |
| 6_conclusioni.pdf | 364.05 Kb |
| Appendici.pdf | 2.14 Mb |
| Bibliografia.pdf | 1.79 Mb |
| Figures_...ssary.pdf | 1.09 Mb |
| front.pdf | 52.47 Kb |
| Indice.pdf | 234.48 Kb |
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