NDLI: Supersonic jets from bevelled rectangular nozzles

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Supersonic jets from bevelled rectangular nozzles

Content Provider	NASA Technical Reports Server (NTRS)
Author	Raman, Ganesh Rice, Edward J.
Copyright Year	1993
Description	The influence of nozzle exit geometry on jet mixing and noise production was studied experimentally for a series of rectangular nozzles operating at supersonic jet velocities. Both converging (C) and converging-diverging (C-D) nozzles were built with asymmetrical (single bevel) and symmetrical (double bevel) exit chambers and with conventional straight exits for comparison. About a four decibel reduction of peak mixing noise was observed for the double bevelled C-D nozzle operated at design pressure ratio. All bevelled geometries provided screech noise reduction for under-expanded jets and an upstream mixing noise directivity shift which would be beneficial for improved acoustic treatment performance of a shrouded system.
File Size	665230
Page Count	10
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940015011
Archival Resource Key	ark:/13960/t6xw9bg51
Language	English
Publisher Date	1993-11-01
Access Restriction	Open
Subject Keyword	Aerodynamics Directivity Nozzle Geometry Nozzle Design Jet Mixing Flow Acoustic Properties Jet Aircraft Noise Noise Reduction Shear Flow Supersonic Jet Flow Convergent-divergent Nozzles Axisymmetric Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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