Abstract
DOI: 10.2514/1.22828 Diffusing transition S-ducts are often used in dual engine fighter aircrafts as intake ducts. The cross section shape at the inlet of the intake duct affects the performance of the duct. The present paper establishes computational fluid dynamics as a design tool for intake design. Various cross section shapes of the inlet, namely, elliptic, semicircular, oval, rectangular, and square, have been analyzed using the standard and the renormalized group k– turbulence model. For all the ducts, the angle of turn (22:5=22:5 deg), the centerline length (300 mm) and the circular exit diameter(100mm)havebeenkeptconstant.Incompressible flowanalysishasbeendoneat0.17Machnumberatthe entry of the duct which corresponds to the throat of intakes. The elliptic-shaped inlet duct shows the best performance in terms of pressure recovery, loss coefficient, and flow distortion at the compressor face, whereas square duct produces the worst flow characteristics. It is also established that the renormalized group k– model predicts better than the standard k– turbulence model.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
