Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/30406| Title: | A numerical study of pre-diffuser optimization of an aero gas turbine combustion chamber |
| Authors: | Reddy, G Ananda Gunesan, V |
| Issue Date: | Aug-2005 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | F23M |
| Abstract: | This paper describes the attempts made in the optimization of pre-diffuser geometry of an aero gas turbine combustion chamber for obtaining minimum total pressure losses and for good, static pressure recovery, Optimization or pre-diffuser has been attempted by changing the geometric parameters like length, divergence angle and wall contour. A 20° sector has been considered for the present study because of the periodically with respect to the air blast atomizer. The geometry is modeled using GAMBIT and CATIA software. Meshing is done by GAMBIT. The governing equations an: solved using the SIMPLE algorithm with iterative multigrid acceleration. Turbulence effects are simulated using the (RNG) k-ɛ model. Flow field characteristics have been analyzed. Optimization is attempted from the point of view of achieving minimum pressure loss. From the present study it is concluded that a 6° straight walled pre-diffuser with area ratio of 1.6594 and a dump gap ratio (D/H) of 1.08 is found to be most optimum, considering the flow development and minimum total pressure loss. |
| Page(s): | 281-291 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.12(4) [August 2005] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 12(4) 281-291.pdf | 7.86 MB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.