DocumentCode :
609241
Title :
A parametric study on the improvement of pressure recovery coefficient of a conical diffuser using Computational Fluid Dynamics
Author :
Ramji, S.A. ; Tarun, M. ; Bharath, R. ; Arumugam, A. Siddarth ; Ramasamy, P. ; Ebenezer, D.
Author_Institution :
Dept. of Mech. Eng., SSN Coll. of Eng., Chennai, India
fYear :
2013
fDate :
10-12 April 2013
Firstpage :
234
Lastpage :
240
Abstract :
The easiest and most practical way to make any system more environmentally friendly is to increase its energy efficiency. In a commercial gas turbine, this is done by attaching a diffuser at the turbine exit. The purpose of this study is to determine the combination of flow parameters and the diffuser design that would lead to the improvement of the pressure recovery coefficient of such a conical diffuser, and hence the overall efficiency of the turbo machine, like an industrial gas turbine, to which the diffuser is attached. The flow in a diffuser was simulated using Computational Fluid Dynamics (CFD) software (Star CCM+). The performance of the diffuser under different conditions was studied. The parameters under consideration were the half cone angle of the diffuser and the swirl number of flow. The study concluded that the highest pressure recovery coefficient, which corresponds to maximum efficiency, was obtained in the diffuser with a half cone angle of two degrees and swirl number 0.5.
Keywords :
computational fluid dynamics; flow simulation; gas turbines; mechanical engineering computing; CFD software; commercial gas turbine; computational fluid dynamic software; conical diffuser; flow parameters; industrial gas turbine; parametric study; pressure recovery coefficient improvement; turbo machine; Computational fluid dynamics; Computational modeling; Equations; Mathematical model; Parametric study; Turbines; conical diffuser; pressure recovery coefficient; swirl number; turbulence;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Efficient Technologies for Sustainability (ICEETS), 2013 International Conference on
Conference_Location :
Nagercoil
Print_ISBN :
978-1-4673-6149-1
Type :
conf
DOI :
10.1109/ICEETS.2013.6533388
Filename :
6533388
Link To Document :
بازگشت