Ibrahim, I.H. , Ng, E.Y.K., Wong, K. and Gunasekaran, R. (2008) Effects of centerline curvature and cross-sectional shape transitioning in the subsonic diffuser of the F-5 fighter jet. Journal of Mechanical Science and Technology, 22(10), pp. 1993-1997. (doi: 10.1007/s12206-008-0744-7)
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Abstract
Intake geometries result in unwanted secondary flows and formations of vortices which affect the engine performance. This paper investigates the effects of the curvature and cross-sectional shape transitioning of the actual F-5 duct. Two additional different geometries were set up to isolate each parameter, a circular cross-sectional duct with similar centerline configuration and a straight duct with similar cross-sectional transitioning as the F-5 duct. To measure the efficiency of duct flow, the distortion index (DC (60)) and pressure recovery are used. It is found that the straight duct with similar cross-sectional transitioning as the F-5 intake resulted in a 2.1% increase in pressure recovery and an 86% decrease in distortion when compared with the baseline intake. Also, the baseline intake resulted in a 0.5% increase in pressure recovery and a 15% decrease in distortion compared to the constant circular cross-sectional duct.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ibrahim, Dr Imran |
| Authors: | Ibrahim, I.H., Ng, E.Y.K., Wong, K., and Gunasekaran, R. |
| College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| Journal Name: | Journal of Mechanical Science and Technology |
| Publisher: | Korean Society of Mechanical Engineers |
| ISSN: | 1738-494X |
| ISSN (Online): | 1976-3824 |
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