Aeroacoustic Data for a High Reynolds Number Axisymmetric Subsonic Jet PDF Download
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720372530
Category :
Languages : en
Pages : 90
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Book Description
The near field fluctuating pressure and aerodynamic mean flow characteristics of a cold subsonic jet issuing from a contoured convergent nozzle are presented. The data are presented for nozzle exit Mach numbers of 0.30, 0.60, and 0.85 at a constant jet stagnation temperature of 104 F. The fluctuating pressure measurements were acquired via linear and semi-circular microphone arrays and the presented results include plots of narrowband spectra, contour maps, streamwise/azimuthal spatial correlations for zero time delay, and cross-spectra of the azimuthal correlations. A pitot probe was used to characterize the mean flow velocity by assuming the subsonic flow to be pressure-balanced with the ambient field into which it exhausts. Presented are mean flow profiles and the momentum thickness of the free shear layer as a function of streamwise position.Ponton, Michael K. and Ukeiley, Lawrence S. and Lee, Sang W.Langley Research CenterAEROACOUSTICS; CONVERGENT NOZZLES; JET FLOW; SUBSONIC FLOW; HIGH REYNOLDS NUMBER; PRESSURE OSCILLATIONS; FLOW CHARACTERISTICS; ENGINE NOISE; EXHAUST NOZZLES; EXHAUST GASES; MACH NUMBER; PRESSURE MEASUREMENT; PRESSURE DISTRIBUTION; NOISE REDUCTION; FLOW VELOCITY; MOMENTUM; EXHAUST VELOCITY
Author: Michael K. Ponton
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 92
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720372530
Category :
Languages : en
Pages : 90
Get Book Here
Book Description
The near field fluctuating pressure and aerodynamic mean flow characteristics of a cold subsonic jet issuing from a contoured convergent nozzle are presented. The data are presented for nozzle exit Mach numbers of 0.30, 0.60, and 0.85 at a constant jet stagnation temperature of 104 F. The fluctuating pressure measurements were acquired via linear and semi-circular microphone arrays and the presented results include plots of narrowband spectra, contour maps, streamwise/azimuthal spatial correlations for zero time delay, and cross-spectra of the azimuthal correlations. A pitot probe was used to characterize the mean flow velocity by assuming the subsonic flow to be pressure-balanced with the ambient field into which it exhausts. Presented are mean flow profiles and the momentum thickness of the free shear layer as a function of streamwise position.Ponton, Michael K. and Ukeiley, Lawrence S. and Lee, Sang W.Langley Research CenterAEROACOUSTICS; CONVERGENT NOZZLES; JET FLOW; SUBSONIC FLOW; HIGH REYNOLDS NUMBER; PRESSURE OSCILLATIONS; FLOW CHARACTERISTICS; ENGINE NOISE; EXHAUST NOZZLES; EXHAUST GASES; MACH NUMBER; PRESSURE MEASUREMENT; PRESSURE DISTRIBUTION; NOISE REDUCTION; FLOW VELOCITY; MOMENTUM; EXHAUST VELOCITY
Author: Michael K. Ponton
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 84
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Book Description
Author: John M. Seiner
Publisher:
ISBN:
Category : Air jets
Languages : en
Pages : 124
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: John M. Seiner
Publisher:
ISBN:
Category : Air jets
Languages : en
Pages : 76
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182
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Book Description
Author: Ganesh Raman
Publisher: Multi-Science Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 584
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Book Description
An up-to-date survey of airplane noise, this single-volume reference thoroughly addresses the key problems facing aeronautical engineers. By tackling the most important aspects of jet aeroacoustics, including theories of jet noise, the design of jet noise facilities, and how jet noise is measured, this thoroughly researched analysis outlines a plan for first limiting the current distress being vocalized in issues of passenger cabin comfort and protests by those living near airports and later for finding an overall solution to jet noise.
Author: Malcolm J. Crocker
Publisher: John Wiley & Sons
ISBN: 0471395994
Category : Technology & Engineering
Languages : en
Pages : 1594
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Book Description
Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 376
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
