In-flight simulation experiments on turbulent jet mixing noise

H. K. Tanna; P. J. Morris

doi:10.1016/0022-460X(77)90422-9

In-flight simulation experiments on turbulent jet mixing noise

H. K. Tanna, P. J. Morris

Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

The effects of aircraft forward motion on pure turbulent mixing noise from unheated jets have been examined experimentally in the in-flight simulation mode. Both acoustic and flow characteristics were determined by testing model-scale nozzles in an anechoic free jet facility and a wind tunnel, respectively. Scaling laws were derived from each set of experiments and found to be complementary. The implications are discussed in detail. In particular, it is shown that the measured reduction in noise at 90° to the jet axis is a pure source alteration effect.

Original language	English (US)
Pages (from-to)	389-405
Number of pages	17
Journal	Journal of Sound and Vibration
Volume	53
Issue number	3
DOIs	https://doi.org/10.1016/0022-460X(77)90422-9
State	Published - Aug 8 1977

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Acoustics and Ultrasonics
Mechanical Engineering

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10.1016/0022-460X(77)90422-9

Cite this

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title = "In-flight simulation experiments on turbulent jet mixing noise",

abstract = "The effects of aircraft forward motion on pure turbulent mixing noise from unheated jets have been examined experimentally in the in-flight simulation mode. Both acoustic and flow characteristics were determined by testing model-scale nozzles in an anechoic free jet facility and a wind tunnel, respectively. Scaling laws were derived from each set of experiments and found to be complementary. The implications are discussed in detail. In particular, it is shown that the measured reduction in noise at 90° to the jet axis is a pure source alteration effect.",

author = "Tanna, {H. K.} and Morris, {P. J.}",

note = "Funding Information: This study was sponsored by NASA Lewis under Contract NAS3-18540. The laser velocimeter system used imthe experiments was developed at Lockheed-Georgia with funding from AFAPL/DOT under Contract F33615-73-C-2032 and Lockheed-Georgia Company. The authors wish to acknowledge the help of Mr C. B. Reid, Mr R. H. Burrin, Dr P. D. Dean and Dr H. E. Plumblee in making the measurements, and Dr B. J. Tester and Professor G. M. Lilley for several useful technical discussions and suggestions.",

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AU - Morris, P. J.

N1 - Funding Information: This study was sponsored by NASA Lewis under Contract NAS3-18540. The laser velocimeter system used imthe experiments was developed at Lockheed-Georgia with funding from AFAPL/DOT under Contract F33615-73-C-2032 and Lockheed-Georgia Company. The authors wish to acknowledge the help of Mr C. B. Reid, Mr R. H. Burrin, Dr P. D. Dean and Dr H. E. Plumblee in making the measurements, and Dr B. J. Tester and Professor G. M. Lilley for several useful technical discussions and suggestions.

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N2 - The effects of aircraft forward motion on pure turbulent mixing noise from unheated jets have been examined experimentally in the in-flight simulation mode. Both acoustic and flow characteristics were determined by testing model-scale nozzles in an anechoic free jet facility and a wind tunnel, respectively. Scaling laws were derived from each set of experiments and found to be complementary. The implications are discussed in detail. In particular, it is shown that the measured reduction in noise at 90° to the jet axis is a pure source alteration effect.

AB - The effects of aircraft forward motion on pure turbulent mixing noise from unheated jets have been examined experimentally in the in-flight simulation mode. Both acoustic and flow characteristics were determined by testing model-scale nozzles in an anechoic free jet facility and a wind tunnel, respectively. Scaling laws were derived from each set of experiments and found to be complementary. The implications are discussed in detail. In particular, it is shown that the measured reduction in noise at 90° to the jet axis is a pure source alteration effect.

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In-flight simulation experiments on turbulent jet mixing noise

Abstract

All Science Journal Classification (ASJC) codes

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