{"id":"https://openalex.org/W2016548808","doi":"https://doi.org/10.1121/1.1995213","title":"Acoustic eigenmodes of corrugated ducts","display_name":"Acoustic eigenmodes of corrugated ducts","publication_year":1975,"publication_date":"1975-04-01","ids":{"openalex":"https://openalex.org/W2016548808","doi":"https://doi.org/10.1121/1.1995213","mag":"2016548808"},"language":"en","primary_location":{"id":"doi:10.1121/1.1995213","doi":"https://doi.org/10.1121/1.1995213","is_oa":false,"landing_page_url":"https://doi.org/10.1121/1.1995213","pdf_url":null,"source":{"id":"https://openalex.org/S11296630","display_name":"The Journal of the Acoustical Society of America","issn_l":"0001-4966","issn":["0001-4966","1520-8524","1520-9024"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","ccf-b","cwts-core","dongbi-b","erih-plus","jufo-3","ki-jl-1","medline","norway-2","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320226","host_organization_name":"Acoustical Society of America","host_organization_lineage":["https://openalex.org/P4310320226"],"host_organization_lineage_names":["Acoustical Society of America"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of the Acoustical Society of America","raw_type":"journal-article"},"volume":null,"type":"conference-abstract","is_traditional":false,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103403300","display_name":"George P. Succi","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I63966007","display_name":"Massachusetts Institute of Technology","ror":"https://ror.org/042nb2s44","country_code":"US","type":"education","lineage":["https://openalex.org/I63966007"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"George P. Succi","raw_affiliation_strings":["Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139","Gas Turbine Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139","institution_ids":["https://openalex.org/I63966007"]},{"raw_affiliation_string":"Gas Turbine Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139","institution_ids":["https://openalex.org/I63966007"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5103403300"],"corresponding_institution_ids":["https://openalex.org/I63966007"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"57","issue":"S1","first_page":"S39","last_page":"S39"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10822","display_name":"Acoustic Wave Phenomena Research","score":0.9082000255584717,"subfield":{"id":"https://openalex.org/subfields/3102","display_name":"Acoustics and Ultrasonics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10822","display_name":"Acoustic Wave Phenomena Research","score":0.9082000255584717,"subfield":{"id":"https://openalex.org/subfields/3102","display_name":"Acoustics and Ultrasonics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11008","display_name":"Aerodynamics and Acoustics in Jet Flows","score":0.052000001072883606,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.00930000003427267,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/corrugated-ducts","display_name":"corrugated ducts","score":0.9340000152587891},{"id":"https://openalex.org/keywords/acoustic-modes","display_name":"acoustic modes","score":0.9800000190734863},{"id":"https://openalex.org/keywords/sound-propagation","display_name":"acoustic wave propagation","score":0.7239999771118164},{"id":"https://openalex.org/keywords/conformal-mapping","display_name":"conformal mapping","score":0.8550000190734863},{"id":"https://openalex.org/keywords/time-independent-perturbation-theory","display_name":"time-independent perturbation theory","score":0.878000020980835},{"id":"https://openalex.org/keywords/eigenfunction-expansion","display_name":"eigenfunction expansion","score":0.6740000247955322},{"id":"https://openalex.org/keywords/duct-acoustics","display_name":"duct acoustics","score":0.6029999852180481}],"concepts":[{"id":"https://openalex.org/C128803854","wikidata":"https://www.wikidata.org/wiki/Q1307821","display_name":"Eigenfunction","level":3,"score":0.8629955053329468},{"id":"https://openalex.org/C2781212128","wikidata":"https://www.wikidata.org/wiki/Q2256181","display_name":"Duct (anatomy)","level":2,"score":0.8190813064575195},{"id":"https://openalex.org/C98214594","wikidata":"https://www.wikidata.org/wiki/Q850275","display_name":"Conformal map","level":2,"score":0.6263226270675659},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5910456776618958},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.4987819194793701},{"id":"https://openalex.org/C177918212","wikidata":"https://www.wikidata.org/wiki/Q803623","display_name":"Perturbation (astronomy)","level":2,"score":0.46280401945114136},{"id":"https://openalex.org/C59696629","wikidata":"https://www.wikidata.org/wiki/Q193846","display_name":"Wave equation","level":2,"score":0.46060970425605774},{"id":"https://openalex.org/C201076478","wikidata":"https://www.wikidata.org/wiki/Q211851","display_name":"Cylindrical coordinate system","level":2,"score":0.4254028797149658},{"id":"https://openalex.org/C78045399","wikidata":"https://www.wikidata.org/wiki/Q11214","display_name":"Differential equation","level":2,"score":0.4171420931816101},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3958594799041748},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.31165921688079834},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.30543264746665955},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.20683914422988892},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1121/1.1995213","doi":"https://doi.org/10.1121/1.1995213","is_oa":false,"landing_page_url":"https://doi.org/10.1121/1.1995213","pdf_url":null,"source":{"id":"https://openalex.org/S11296630","display_name":"The Journal of the Acoustical Society of America","issn_l":"0001-4966","issn":["0001-4966","1520-8524","1520-9024"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","ccf-b","cwts-core","dongbi-b","erih-plus","jufo-3","ki-jl-1","medline","norway-2","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320226","host_organization_name":"Acoustical Society of America","host_organization_lineage":["https://openalex.org/P4310320226"],"host_organization_lineage_names":["Acoustical Society of America"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of the Acoustical Society of America","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1540259479","https://openalex.org/W2039948626","https://openalex.org/W1992299985","https://openalex.org/W1991156266","https://openalex.org/W2901955000","https://openalex.org/W1968774322","https://openalex.org/W1975706245","https://openalex.org/W2134811527","https://openalex.org/W1998123085","https://openalex.org/W2048618749"],"abstract_inverted_index":{"Acoustic":[0],"propagation":[1],"in":[2,26,39],"two-dimensional":[3],"corrugated":[4],"ducts":[5,67,81],"is":[6,10,34,51,86],"analyzed.":[7],"A":[8,75],"transform":[9,78],"made":[11],"to":[12],"a":[13,43],"coordinate":[14],"system":[15],"that":[16],"matches":[17],"the":[18,40,54],"duct":[19],"walls.":[20],"The":[21,30,46],"resulting":[22],"wave":[23],"equation":[24,33],"separates":[25],"space":[27],"and":[28,70],"time.":[29],"spatial":[31],"differential":[32],"then":[35],"solved":[36],"by":[37,53,93],"expanding":[38],"eigenfunctions":[41],"of":[42,57,62,68,82],"flat-walled":[44],"duct.":[45],"prescription":[47],"for":[48,65,79],"this":[49],"expansion":[50],"given":[52],"appropriate":[55],"application":[56],"time-independent":[58],"perturbation":[59],"theory.":[60],"Calculations":[61],"first-order":[63],"corrections":[64],"sinusoidal":[66],"finite":[69],"infinite":[71],"length":[72],"are":[73],"presented.":[74],"general":[76],"conformal":[77],"symmetric":[80],"arbitrary":[83],"cross":[84],"section":[85],"also":[87],"included.":[88],"[This":[89],"work":[90],"was":[91],"supported":[92],"NASA":[94],"Lewis":[95],"Research":[96,99],"Center":[97],"under":[98],"Grant":[100],"NGR":[101],"22-009-805.]":[102]},"counts_by_year":[],"updated_date":"2026-08-18T07:49:30.821534","created_date":"2016-06-24T00:00:00"}