Thesis etd-09052005-190954 |
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Thesis type
Tesi di laurea vecchio ordinamento
Author
Sponziello, Alessandro
email address
alessandro.sponzi@libero.it
URN
etd-09052005-190954
Thesis title
An exploration of the use of proprietary computational fluid dynamic codes for the detailed analysis of shroud leakage flow structure in turbine test rig (DT1/68)
Department
INGEGNERIA
Course of study
INGEGNERIA AEROSPAZIALE
Supervisors
relatore Paganucci, Fabrizio
relatore Lazzeretti, Renzo
relatore Stokes, Mark R.
relatore D'Agostino, Luca
relatore Lazzeretti, Renzo
relatore Stokes, Mark R.
relatore D'Agostino, Luca
Keywords
- turbine
- shroud leakage flow
Graduation session start date
10/10/2005
Availability
Withheld
Release date
10/10/2045
Summary
The main objective of this work was to explore the using of proprietary analysis codes (Fluent 6.0 and ICEM CFD 5.0.2) for performing detailed CFD calculations within RR plc. The basis of the work was the CFD analysis of the test rig results for DT1/68.
This investigation makes use of the FLUENT 6.0 code, employing two types of turbulence models to assess the differences in the results obtained. Issues explored within the project were:
1) differences in predictions for the K-e and Spalart-Allmaras turbulence models;
2) differences in model results for plain annulus and detailed shroud models;
3) comparison of the predictions of the proprietary codes and published experimental and computational results;
4) comparison of the predictions with the rig results for DT1/68.
Conclusions are drawn on the following issues:
1) spanwise variations in the predictions of main flow variables for the K-e and Spalart-Allmaras turbulence models;
2) the benefits of detailed shroud modelling versus plain annulus models;
3) capability of proprietary codes to capture subtle flow features found by experimental methods;
4) the capability of proprietary codes to duplicate experimental rig results.
This investigation makes use of the FLUENT 6.0 code, employing two types of turbulence models to assess the differences in the results obtained. Issues explored within the project were:
1) differences in predictions for the K-e and Spalart-Allmaras turbulence models;
2) differences in model results for plain annulus and detailed shroud models;
3) comparison of the predictions of the proprietary codes and published experimental and computational results;
4) comparison of the predictions with the rig results for DT1/68.
Conclusions are drawn on the following issues:
1) spanwise variations in the predictions of main flow variables for the K-e and Spalart-Allmaras turbulence models;
2) the benefits of detailed shroud modelling versus plain annulus models;
3) capability of proprietary codes to capture subtle flow features found by experimental methods;
4) the capability of proprietary codes to duplicate experimental rig results.
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