Characteristics of the Shock Noise Component of Jet Noise

The characteristics of the flow and the noise of shock-containing jets have been studied for nearly three decades. It is now established that broadband shock-associated noise is generated by the interaction of the downstream-convecting coherent structures of the jet flow with the shock cells in the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:AIAA journal 2010-01, Vol.48 (1), p.25-46
Hauptverfasser: Viswanathan, K, Alkislar, M. B, Czech, M. J
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 46
container_issue 1
container_start_page 25
container_title AIAA journal
container_volume 48
creator Viswanathan, K
Alkislar, M. B
Czech, M. J
description The characteristics of the flow and the noise of shock-containing jets have been studied for nearly three decades. It is now established that broadband shock-associated noise is generated by the interaction of the downstream-convecting coherent structures of the jet flow with the shock cells in the jet plume. Past analyses of far-field data have been carried out with the total measured noise, which contains both the turbulent mixing noise and shock noise. In this study, these two components are first separated and extracted from the total spectra. Both convergent and convergent-divergent nozzles are considered. The decomposition is made possible by a recently developed scaling methodology for turbulent mixing noise, which provides excellent collapse of the mixing noise spectra from jets at all velocities but at a fixed temperature ratio. The characteristics of the shock component alone are investigated. A surprising effect of jet temperature on shock noise is established for the first time: the levels increase as the jet is first heated; however, the levels do not increase with further increase in jet temperature. The physical phenomenon responsible for this saturation of levels is not known at this time. The intensity for shock noise in the forward quadrant does not scale as the fourth power (shock exponent) of ... but spans a range from 2.9 to 6.17, depending on the radiation angle and the jet temperature ratio. It is not straightforward to collapse the shock spectra. It is also established for the first time that nonlinear propagation effects are manifested at lower radiation angles, in which the shock component is dominant. The physical phenomenon that triggers the onset of nonlinear propagation for the shock noise could not be identified. The characteristics of the correlation functions at the lower inlet angles for subsonic and supersonic jets are different, attesting to the different noise generation mechanisms. (ProQuest: ... denotes formulae/symbols omitted.)
doi_str_mv 10.2514/1.38521
format Article
fullrecord <record><control><sourceid>proquest_aiaa_</sourceid><recordid>TN_cdi_aiaa_journals_1_38521_pdf_fulltext</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>36368663</sourcerecordid><originalsourceid>FETCH-LOGICAL-a442t-5cf01855c01fa9404e6a1c3a4a1580180dcd7737f51cd12568d2bdd74b4be55f3</originalsourceid><addsrcrecordid>eNpt0FtLwzAUB_AgCs4pfoUiXvChMyeXtj5K8crQBxV8C1masM6uqUkK-u3N7FAY5iWcnB_nhD9Ch4AnhAO7gAktOIEtNAJOaRqLt200whhDCoyTXbTn_SJWJC9ghC7LuXRSBe1qH2rlE2uSMNfJ89yq9-TR1l4npV12ttVtWDUfdBie99GOkY3XB-t7jF5vrl_Ku3T6dHtfXk1TyRgJKVcGQ8G5wmDkJcNMZxIUlUwCL2IHV6rKc5obDqoCwrOiIrOqytmMzTTnho7R6TC3c_aj1z6IZe2VbhrZatt7QTOaFVlGIzzagAvbuzb-TZAYBckZkIjOBqSc9d5pIzpXL6X7EoDFKj8B4ie_KE_W46RXsjFOtqr2v5wQGk--cueDk7WUfyvXY0RXGWH6pgn6M0R7_K_dWP0NQ5yGMg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>215327412</pqid></control><display><type>article</type><title>Characteristics of the Shock Noise Component of Jet Noise</title><source>Alma/SFX Local Collection</source><creator>Viswanathan, K ; Alkislar, M. B ; Czech, M. J</creator><creatorcontrib>Viswanathan, K ; Alkislar, M. B ; Czech, M. J</creatorcontrib><description>The characteristics of the flow and the noise of shock-containing jets have been studied for nearly three decades. It is now established that broadband shock-associated noise is generated by the interaction of the downstream-convecting coherent structures of the jet flow with the shock cells in the jet plume. Past analyses of far-field data have been carried out with the total measured noise, which contains both the turbulent mixing noise and shock noise. In this study, these two components are first separated and extracted from the total spectra. Both convergent and convergent-divergent nozzles are considered. The decomposition is made possible by a recently developed scaling methodology for turbulent mixing noise, which provides excellent collapse of the mixing noise spectra from jets at all velocities but at a fixed temperature ratio. The characteristics of the shock component alone are investigated. A surprising effect of jet temperature on shock noise is established for the first time: the levels increase as the jet is first heated; however, the levels do not increase with further increase in jet temperature. The physical phenomenon responsible for this saturation of levels is not known at this time. The intensity for shock noise in the forward quadrant does not scale as the fourth power (shock exponent) of ... but spans a range from 2.9 to 6.17, depending on the radiation angle and the jet temperature ratio. It is not straightforward to collapse the shock spectra. It is also established for the first time that nonlinear propagation effects are manifested at lower radiation angles, in which the shock component is dominant. The physical phenomenon that triggers the onset of nonlinear propagation for the shock noise could not be identified. The characteristics of the correlation functions at the lower inlet angles for subsonic and supersonic jets are different, attesting to the different noise generation mechanisms. (ProQuest: ... denotes formulae/symbols omitted.)</description><identifier>ISSN: 0001-1452</identifier><identifier>EISSN: 1533-385X</identifier><identifier>DOI: 10.2514/1.38521</identifier><identifier>CODEN: AIAJAH</identifier><language>eng</language><publisher>Reston, VA: American Institute of Aeronautics and Astronautics</publisher><subject>Acoustics ; Aeroacoustics, atmospheric sound ; Aerodynamics ; Aerospace engineering ; Aircraft ; Exact sciences and technology ; Fluid dynamics ; Fundamental areas of phenomenology (including applications) ; Noise ; Noise (turbulence generated) ; Physics ; Turbulent flows, convection, and heat transfer</subject><ispartof>AIAA journal, 2010-01, Vol.48 (1), p.25-46</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright American Institute of Aeronautics and Astronautics Jan 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a442t-5cf01855c01fa9404e6a1c3a4a1580180dcd7737f51cd12568d2bdd74b4be55f3</citedby><cites>FETCH-LOGICAL-a442t-5cf01855c01fa9404e6a1c3a4a1580180dcd7737f51cd12568d2bdd74b4be55f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,4050,4051,23930,23931,25140,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=22333371$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Viswanathan, K</creatorcontrib><creatorcontrib>Alkislar, M. B</creatorcontrib><creatorcontrib>Czech, M. J</creatorcontrib><title>Characteristics of the Shock Noise Component of Jet Noise</title><title>AIAA journal</title><description>The characteristics of the flow and the noise of shock-containing jets have been studied for nearly three decades. It is now established that broadband shock-associated noise is generated by the interaction of the downstream-convecting coherent structures of the jet flow with the shock cells in the jet plume. Past analyses of far-field data have been carried out with the total measured noise, which contains both the turbulent mixing noise and shock noise. In this study, these two components are first separated and extracted from the total spectra. Both convergent and convergent-divergent nozzles are considered. The decomposition is made possible by a recently developed scaling methodology for turbulent mixing noise, which provides excellent collapse of the mixing noise spectra from jets at all velocities but at a fixed temperature ratio. The characteristics of the shock component alone are investigated. A surprising effect of jet temperature on shock noise is established for the first time: the levels increase as the jet is first heated; however, the levels do not increase with further increase in jet temperature. The physical phenomenon responsible for this saturation of levels is not known at this time. The intensity for shock noise in the forward quadrant does not scale as the fourth power (shock exponent) of ... but spans a range from 2.9 to 6.17, depending on the radiation angle and the jet temperature ratio. It is not straightforward to collapse the shock spectra. It is also established for the first time that nonlinear propagation effects are manifested at lower radiation angles, in which the shock component is dominant. The physical phenomenon that triggers the onset of nonlinear propagation for the shock noise could not be identified. The characteristics of the correlation functions at the lower inlet angles for subsonic and supersonic jets are different, attesting to the different noise generation mechanisms. (ProQuest: ... denotes formulae/symbols omitted.)</description><subject>Acoustics</subject><subject>Aeroacoustics, atmospheric sound</subject><subject>Aerodynamics</subject><subject>Aerospace engineering</subject><subject>Aircraft</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Noise</subject><subject>Noise (turbulence generated)</subject><subject>Physics</subject><subject>Turbulent flows, convection, and heat transfer</subject><issn>0001-1452</issn><issn>1533-385X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNpt0FtLwzAUB_AgCs4pfoUiXvChMyeXtj5K8crQBxV8C1masM6uqUkK-u3N7FAY5iWcnB_nhD9Ch4AnhAO7gAktOIEtNAJOaRqLt200whhDCoyTXbTn_SJWJC9ghC7LuXRSBe1qH2rlE2uSMNfJ89yq9-TR1l4npV12ttVtWDUfdBie99GOkY3XB-t7jF5vrl_Ku3T6dHtfXk1TyRgJKVcGQ8G5wmDkJcNMZxIUlUwCL2IHV6rKc5obDqoCwrOiIrOqytmMzTTnho7R6TC3c_aj1z6IZe2VbhrZatt7QTOaFVlGIzzagAvbuzb-TZAYBckZkIjOBqSc9d5pIzpXL6X7EoDFKj8B4ie_KE_W46RXsjFOtqr2v5wQGk--cueDk7WUfyvXY0RXGWH6pgn6M0R7_K_dWP0NQ5yGMg</recordid><startdate>201001</startdate><enddate>201001</enddate><creator>Viswanathan, K</creator><creator>Alkislar, M. B</creator><creator>Czech, M. J</creator><general>American Institute of Aeronautics and Astronautics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>201001</creationdate><title>Characteristics of the Shock Noise Component of Jet Noise</title><author>Viswanathan, K ; Alkislar, M. B ; Czech, M. J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a442t-5cf01855c01fa9404e6a1c3a4a1580180dcd7737f51cd12568d2bdd74b4be55f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Acoustics</topic><topic>Aeroacoustics, atmospheric sound</topic><topic>Aerodynamics</topic><topic>Aerospace engineering</topic><topic>Aircraft</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Noise</topic><topic>Noise (turbulence generated)</topic><topic>Physics</topic><topic>Turbulent flows, convection, and heat transfer</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Viswanathan, K</creatorcontrib><creatorcontrib>Alkislar, M. B</creatorcontrib><creatorcontrib>Czech, M. J</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical &amp; Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>AIAA journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Viswanathan, K</au><au>Alkislar, M. B</au><au>Czech, M. J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characteristics of the Shock Noise Component of Jet Noise</atitle><jtitle>AIAA journal</jtitle><date>2010-01</date><risdate>2010</risdate><volume>48</volume><issue>1</issue><spage>25</spage><epage>46</epage><pages>25-46</pages><issn>0001-1452</issn><eissn>1533-385X</eissn><coden>AIAJAH</coden><abstract>The characteristics of the flow and the noise of shock-containing jets have been studied for nearly three decades. It is now established that broadband shock-associated noise is generated by the interaction of the downstream-convecting coherent structures of the jet flow with the shock cells in the jet plume. Past analyses of far-field data have been carried out with the total measured noise, which contains both the turbulent mixing noise and shock noise. In this study, these two components are first separated and extracted from the total spectra. Both convergent and convergent-divergent nozzles are considered. The decomposition is made possible by a recently developed scaling methodology for turbulent mixing noise, which provides excellent collapse of the mixing noise spectra from jets at all velocities but at a fixed temperature ratio. The characteristics of the shock component alone are investigated. A surprising effect of jet temperature on shock noise is established for the first time: the levels increase as the jet is first heated; however, the levels do not increase with further increase in jet temperature. The physical phenomenon responsible for this saturation of levels is not known at this time. The intensity for shock noise in the forward quadrant does not scale as the fourth power (shock exponent) of ... but spans a range from 2.9 to 6.17, depending on the radiation angle and the jet temperature ratio. It is not straightforward to collapse the shock spectra. It is also established for the first time that nonlinear propagation effects are manifested at lower radiation angles, in which the shock component is dominant. The physical phenomenon that triggers the onset of nonlinear propagation for the shock noise could not be identified. The characteristics of the correlation functions at the lower inlet angles for subsonic and supersonic jets are different, attesting to the different noise generation mechanisms. (ProQuest: ... denotes formulae/symbols omitted.)</abstract><cop>Reston, VA</cop><pub>American Institute of Aeronautics and Astronautics</pub><doi>10.2514/1.38521</doi><tpages>22</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0001-1452
ispartof AIAA journal, 2010-01, Vol.48 (1), p.25-46
issn 0001-1452
1533-385X
language eng
recordid cdi_aiaa_journals_1_38521_pdf_fulltext
source Alma/SFX Local Collection
subjects Acoustics
Aeroacoustics, atmospheric sound
Aerodynamics
Aerospace engineering
Aircraft
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Noise
Noise (turbulence generated)
Physics
Turbulent flows, convection, and heat transfer
title Characteristics of the Shock Noise Component of Jet Noise
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T21%3A18%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_aiaa_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Characteristics%20of%20the%20Shock%20Noise%20Component%20of%20Jet%20Noise&rft.jtitle=AIAA%20journal&rft.au=Viswanathan,%20K&rft.date=2010-01&rft.volume=48&rft.issue=1&rft.spage=25&rft.epage=46&rft.pages=25-46&rft.issn=0001-1452&rft.eissn=1533-385X&rft.coden=AIAJAH&rft_id=info:doi/10.2514/1.38521&rft_dat=%3Cproquest_aiaa_%3E36368663%3C/proquest_aiaa_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=215327412&rft_id=info:pmid/&rfr_iscdi=true