Ahmed, Mohammed R. and Sharma, S.D. (2005) Turbulent mixing enhancement with a 10o chute mixer. Aircraft Engineering and Aerospace Technology, 77 (5). pp. 404-414. ISSN 0002-2667
Full text not available from this repository.Abstract
Purpose – Turbulent mixing of two co-axial jets having a low annular to core area ratio is enhanced by employing a chute mixer, directing part of the annular stream at 10° towards the core region. Aims to present results from measurements of time-averaged and fluctuating components of velocity under cold flow conditions.
Design/methodology/approach – Experiments were conducted at a bypass ratio of 0.47 which is a typical value for low bypass turbofan engines. Contours of time-averaged velocity and streamwise and transverse turbulence intensities were obtained by making detailed measurements close to the chutes. Distributions of time-averaged velocity and turbulence intensity were obtained at different axial locations downstream of the chute mixer. Total and static pressure measurements were also performed.
Findings – The high velocity annular stream was found to quickly diffuse after entering through the chutes and mix with the core stream due to high turbulence generation. A strong transverse turbulence component enhanced the mixing of the streams. With the aid of the chute mixer, nearly complete mixing is achieved over a length of 5 duct radii. A higher total pressure loss of about 1.38 percent is the penalty paid for the enhanced mixing.
Originality/value – Provides results from experiments into the process of turbulent mixing of co-axial jets.
| Item Type: | Journal Article |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics |
| Depositing User: | Ms Mereoni Camailakeba |
| Date Deposited: | 19 Apr 2005 09:37 |
| Last Modified: | 09 May 2012 08:17 |
| URI: | https://repository.usp.ac.fj/id/eprint/3358 |
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