{"id":"https://openalex.org/W4413431386","doi":"https://doi.org/10.3390/computation13090203","title":"SPL-Based Modeling of Serrated Airfoil Noise via Functional Regression and Ensemble Learning","display_name":"SPL-Based Modeling of Serrated Airfoil Noise via Functional Regression and Ensemble Learning","publication_year":2025,"publication_date":"2025-08-22","ids":{"openalex":"https://openalex.org/W4413431386","doi":"https://doi.org/10.3390/computation13090203"},"language":"en","primary_location":{"id":"doi:10.3390/computation13090203","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computation13090203","pdf_url":"https://www.mdpi.com/2079-3197/13/9/203/pdf?version=1755856821","source":{"id":"https://openalex.org/S2738402919","display_name":"Computation","issn_l":"2079-3197","issn":["2079-3197"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computation","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2079-3197/13/9/203/pdf?version=1755856821","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5093359128","display_name":"Andrei-George Totu","orcid":"https://orcid.org/0000-0003-0460-7558"},"institutions":[{"id":"https://openalex.org/I4210159047","display_name":"Romanian Research and Development Institute for Gas Turbines","ror":"https://ror.org/05t2k9j40","country_code":"RO","type":"facility","lineage":["https://openalex.org/I4210159047"]},{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Andrei-George Totu","raw_affiliation_strings":["Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania"],"raw_orcid":"https://orcid.org/0000-0003-0460-7558","affiliations":[{"raw_affiliation_string":"Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]},{"raw_affiliation_string":"National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania","institution_ids":["https://openalex.org/I4210159047"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112978880","display_name":"Daniel-Eugeniu Crun\u021beanu","orcid":null},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Daniel-Eugeniu Crun\u021beanu","raw_affiliation_strings":["Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054192371","display_name":"Lumini\u021ba Dr\u0103g\u0103\u0219anu","orcid":null},"institutions":[{"id":"https://openalex.org/I4210159047","display_name":"Romanian Research and Development Institute for Gas Turbines","ror":"https://ror.org/05t2k9j40","country_code":"RO","type":"facility","lineage":["https://openalex.org/I4210159047"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Lumini\u021ba Dr\u0103g\u0103\u0219anu","raw_affiliation_strings":["National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania","institution_ids":["https://openalex.org/I4210159047"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5088284983","display_name":"Grigore Cican","orcid":"https://orcid.org/0000-0003-0669-8131"},"institutions":[{"id":"https://openalex.org/I4210159047","display_name":"Romanian Research and Development Institute for Gas Turbines","ror":"https://ror.org/05t2k9j40","country_code":"RO","type":"facility","lineage":["https://openalex.org/I4210159047"]},{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":true,"raw_author_name":"Grigore Cican","raw_affiliation_strings":["Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania"],"raw_orcid":"https://orcid.org/0000-0003-0669-8131","affiliations":[{"raw_affiliation_string":"Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]},{"raw_affiliation_string":"National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu, 061126 Bucharest, Romania","institution_ids":["https://openalex.org/I4210159047"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5023036664","display_name":"Constantin Leven\u021biu","orcid":"https://orcid.org/0009-0003-8186-6817"},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Constantin Leven\u021biu","raw_affiliation_strings":["Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Polizu Street, 1, 011061 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5088284983"],"corresponding_institution_ids":["https://openalex.org/I4210159047","https://openalex.org/I61641377"],"apc_list":{"value":1400,"currency":"CHF","value_usd":1515},"apc_paid":{"value":1400,"currency":"CHF","value_usd":1515},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.27306232,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"9","first_page":"203","last_page":"203"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11008","display_name":"Aerodynamics and Acoustics in Jet Flows","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11008","display_name":"Aerodynamics and Acoustics in Jet Flows","score":0.9998999834060669,"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/T10360","display_name":"Fluid Dynamics and Turbulent Flows","score":0.9937999844551086,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T10822","display_name":"Acoustic Wave Phenomena Research","score":0.9936000108718872,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"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/airfoil","display_name":"Airfoil","score":0.7365361452102661},{"id":"https://openalex.org/keywords/ensemble-learning","display_name":"Ensemble learning","score":0.6083300709724426},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.5969573259353638},{"id":"https://openalex.org/keywords/regression-analysis","display_name":"Regression analysis","score":0.5174099206924438},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.48293063044548035},{"id":"https://openalex.org/keywords/regression","display_name":"Regression","score":0.4756464660167694},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.45604896545410156},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3344194293022156},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.33025896549224854},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2963876724243164},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.24027442932128906},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18349629640579224},{"id":"https://openalex.org/keywords/structural-engineering","display_name":"Structural engineering","score":0.09858924150466919}],"concepts":[{"id":"https://openalex.org/C112124176","wikidata":"https://www.wikidata.org/wiki/Q4698744","display_name":"Airfoil","level":2,"score":0.7365361452102661},{"id":"https://openalex.org/C45942800","wikidata":"https://www.wikidata.org/wiki/Q245652","display_name":"Ensemble learning","level":2,"score":0.6083300709724426},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.5969573259353638},{"id":"https://openalex.org/C152877465","wikidata":"https://www.wikidata.org/wiki/Q208042","display_name":"Regression analysis","level":2,"score":0.5174099206924438},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.48293063044548035},{"id":"https://openalex.org/C83546350","wikidata":"https://www.wikidata.org/wiki/Q1139051","display_name":"Regression","level":2,"score":0.4756464660167694},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.45604896545410156},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3344194293022156},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.33025896549224854},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2963876724243164},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.24027442932128906},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18349629640579224},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.09858924150466919},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.3390/computation13090203","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computation13090203","pdf_url":"https://www.mdpi.com/2079-3197/13/9/203/pdf?version=1755856821","source":{"id":"https://openalex.org/S2738402919","display_name":"Computation","issn_l":"2079-3197","issn":["2079-3197"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computation","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:1ac0559cd67e49fcbd4fdad1a5ee523c","is_oa":true,"landing_page_url":"https://doaj.org/article/1ac0559cd67e49fcbd4fdad1a5ee523c","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Computation, Vol 13, Iss 9, p 203 (2025)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.3390/computation13090203","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computation13090203","pdf_url":"https://www.mdpi.com/2079-3197/13/9/203/pdf?version=1755856821","source":{"id":"https://openalex.org/S2738402919","display_name":"Computation","issn_l":"2079-3197","issn":["2079-3197"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computation","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4413431386.pdf","grobid_xml":"https://content.openalex.org/works/W4413431386.grobid-xml"},"referenced_works_count":31,"referenced_works":["https://openalex.org/W149559591","https://openalex.org/W2013726589","https://openalex.org/W2046624889","https://openalex.org/W2050690867","https://openalex.org/W2346321071","https://openalex.org/W2395669172","https://openalex.org/W2514536411","https://openalex.org/W2583000219","https://openalex.org/W2612870069","https://openalex.org/W2626190318","https://openalex.org/W2789459641","https://openalex.org/W2799642789","https://openalex.org/W2806094576","https://openalex.org/W2808680876","https://openalex.org/W2902697600","https://openalex.org/W2947838438","https://openalex.org/W3011453667","https://openalex.org/W3100461340","https://openalex.org/W3188679133","https://openalex.org/W3201111629","https://openalex.org/W4205106218","https://openalex.org/W4207077983","https://openalex.org/W4380150040","https://openalex.org/W4394603657","https://openalex.org/W4399271373","https://openalex.org/W4402637162","https://openalex.org/W4404594691","https://openalex.org/W4408106787","https://openalex.org/W4408698035","https://openalex.org/W4409408407","https://openalex.org/W6604437609"],"related_works":["https://openalex.org/W31220157","https://openalex.org/W2312753042","https://openalex.org/W4289356671","https://openalex.org/W2389155397","https://openalex.org/W2165884543","https://openalex.org/W3186837933","https://openalex.org/W2368989808","https://openalex.org/W1969346022","https://openalex.org/W2034959125","https://openalex.org/W2355687852"],"abstract_inverted_index":{"This":[0],"study":[1],"presents":[2],"a":[3,44,155],"semi-empirical":[4],"approach":[5],"to":[6,114,128,172],"generalizing":[7],"the":[8,26,84,142,159],"acoustic":[9,39,56,87,130,152,185],"radiation":[10],"generated":[11],"by":[12],"serrated":[13,166],"airfoil":[14],"configurations,":[15],"based":[16],"on":[17,89,105],"small-scale":[18],"aerodynamic/acoustic":[19],"experiments":[20],"and":[21,36,55,65,80,92,127,151,162,177,183],"functional":[22,146],"regression":[23],"techniques.":[24],"In":[25],"context":[27],"of":[28,86,100,144,164],"passive":[29],"noise":[30,189],"reduction":[31],"strategies,":[32],"such":[33],"as":[34],"leading-edge":[35],"trailing-edge":[37],"serrations,":[38],"measurements":[40],"are":[41,59,71,170],"performed":[42],"in":[43,187],"controlled":[45],"subsonic":[46],"wind":[47],"tunnel":[48],"environment.":[49],"Sound":[50],"pressure":[51],"level":[52],"(SPL)":[53],"spectra":[54],"power":[57],"metrics":[58],"acquired":[60],"for":[61,132,141,158],"various":[62],"geometric":[63,91],"configurations":[64,133],"flow":[66],"conditions.":[67],"These":[68],"spectral":[69],"data":[70,182],"then":[72],"analyzed":[73],"using":[74],"regression-based":[75],"modeling":[76,186],"techniques\u2014linear,":[77],"quadratic,":[78],"logarithmic,":[79],"exponential":[81],"forms\u2014to":[82],"capture":[83],"dependence":[85],"emission":[88],"key":[90],"flow-related":[93],"variables":[94],"(e.g.,":[95,122],"serration":[96],"amplitude,":[97],"wavelength,":[98],"angle":[99],"attack),":[101],"without":[102],"relying":[103],"explicitly":[104],"predefined":[106],"nondimensional":[107],"numbers.":[108],"The":[109,137,168],"resulting":[110],"predictive":[111],"models":[112],"aim":[113],"describe":[115],"SPL":[116],"behavior":[117],"across":[118],"relevant":[119],"frequency":[120],"bands":[121],"broadband":[123],"or":[124],"1/3":[125],"octave)":[126],"extrapolate":[129],"trends":[131],"beyond":[134],"those":[135],"tested.":[136],"proposed":[138],"methodology":[139],"allows":[140],"identification":[143],"compact":[145],"relationships":[147],"between":[148],"configuration":[149],"parameters":[150],"output,":[153],"offering":[154],"practical":[156],"tool":[157],"preliminary":[160],"design":[161],"optimization":[163],"low-noise":[165],"profiles.":[167],"findings":[169],"intended":[171],"support":[173],"both":[174],"physical":[175],"understanding":[176],"engineering":[178],"application,":[179],"bridging":[180],"experimental":[181],"parametric":[184],"aerodynamic":[188],"control.":[190]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}