{"id":"https://openalex.org/W7163635564","doi":"https://doi.org/10.48550/arxiv.2606.05229","title":"Hairpin Vortices Extraction in Turbulent Boundary Layer Flows","display_name":"Hairpin Vortices Extraction in Turbulent Boundary Layer Flows","publication_year":2026,"publication_date":"2026-06-02","ids":{"openalex":"https://openalex.org/W7163635564","doi":"https://doi.org/10.48550/arxiv.2606.05229"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2606.05229","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2606.05229","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2606.05229","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5137630416","display_name":"Adeel Zafar","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zafar, Adeel","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100279339","display_name":"Zahra Poorshayegh","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Poorshayegh, Zahra","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5137920135","display_name":"Lei Si","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Si, Lei","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5138005426","display_name":"Di Yang","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yang, Di","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5137967981","display_name":"Guoning Chen","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Chen, Guoning","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"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":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10360","display_name":"Fluid Dynamics and Turbulent Flows","score":0.6848999857902527,"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"}},"topics":[{"id":"https://openalex.org/T10360","display_name":"Fluid Dynamics and Turbulent Flows","score":0.6848999857902527,"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/T11206","display_name":"Model Reduction and Neural Networks","score":0.1340000033378601,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"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/T11254","display_name":"Fluid Dynamics and Vibration Analysis","score":0.061000000685453415,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/vortex","display_name":"Vortex","score":0.8589000105857849},{"id":"https://openalex.org/keywords/turbulence","display_name":"Turbulence","score":0.6499000191688538},{"id":"https://openalex.org/keywords/merge","display_name":"Merge (version control)","score":0.5666999816894531},{"id":"https://openalex.org/keywords/scalar","display_name":"Scalar (mathematics)","score":0.5569000244140625},{"id":"https://openalex.org/keywords/boundary-layer","display_name":"Boundary layer","score":0.4068000018596649},{"id":"https://openalex.org/keywords/vorticity","display_name":"Vorticity","score":0.399399995803833},{"id":"https://openalex.org/keywords/flow","display_name":"Flow (mathematics)","score":0.3628999888896942}],"concepts":[{"id":"https://openalex.org/C140820882","wikidata":"https://www.wikidata.org/wiki/Q732722","display_name":"Vortex","level":2,"score":0.8589000105857849},{"id":"https://openalex.org/C196558001","wikidata":"https://www.wikidata.org/wiki/Q190132","display_name":"Turbulence","level":2,"score":0.6499000191688538},{"id":"https://openalex.org/C197129107","wikidata":"https://www.wikidata.org/wiki/Q1921621","display_name":"Merge (version control)","level":2,"score":0.5666999816894531},{"id":"https://openalex.org/C57691317","wikidata":"https://www.wikidata.org/wiki/Q1289248","display_name":"Scalar (mathematics)","level":2,"score":0.5569000244140625},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5318999886512756},{"id":"https://openalex.org/C111603439","wikidata":"https://www.wikidata.org/wiki/Q752193","display_name":"Boundary layer","level":2,"score":0.4068000018596649},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.40639999508857727},{"id":"https://openalex.org/C200114574","wikidata":"https://www.wikidata.org/wiki/Q1143513","display_name":"Vorticity","level":3,"score":0.399399995803833},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.3783999979496002},{"id":"https://openalex.org/C38349280","wikidata":"https://www.wikidata.org/wiki/Q1434290","display_name":"Flow (mathematics)","level":2,"score":0.3628999888896942},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.3352999985218048},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.3190999925136566},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.3172000050544739},{"id":"https://openalex.org/C62354387","wikidata":"https://www.wikidata.org/wiki/Q875399","display_name":"Boundary (topology)","level":2,"score":0.3109999895095825},{"id":"https://openalex.org/C3802936","wikidata":"https://www.wikidata.org/wiki/Q1339889","display_name":"Tourbillon","level":3,"score":0.29580000042915344},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2863999903202057},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.28519999980926514},{"id":"https://openalex.org/C182310444","wikidata":"https://www.wikidata.org/wiki/Q1332643","display_name":"Boundary value problem","level":2,"score":0.27900001406669617},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.27790001034736633},{"id":"https://openalex.org/C110521144","wikidata":"https://www.wikidata.org/wiki/Q193460","display_name":"Scalar field","level":2,"score":0.26910001039505005},{"id":"https://openalex.org/C18533594","wikidata":"https://www.wikidata.org/wiki/Q1227572","display_name":"Direct numerical simulation","level":4,"score":0.25929999351501465},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.258899986743927},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.2540000081062317},{"id":"https://openalex.org/C134786449","wikidata":"https://www.wikidata.org/wiki/Q3391255","display_name":"Planar","level":2,"score":0.25360000133514404}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2606.05229","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2606.05229","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2606.05229","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2606.05229","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.6336393356323242,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Hairpin":[0],"vortices":[1,51,146],"are":[2,108,123,135,147],"fundamental":[3],"structures":[4,24],"within":[5],"turbulent":[6,53,185],"boundary":[7,54,202],"layers,":[8],"playing":[9],"a":[10,43],"crucial":[11],"role":[12],"in":[13,98],"energy":[14],"dissipation,":[15],"mixing,":[16],"and":[17,34,63,91,111,122,153,171,174,179,194],"momentum":[18],"transport.":[19],"However,":[20],"accurately":[21],"extracting":[22],"these":[23],"remains":[25],"challenging":[26],"due":[27],"to":[28,83,88,116],"their":[29],"irregular":[30],"shapes,":[31],"varying":[32,201],"scales,":[33],"entanglement":[35],"with":[36,159],"surrounding":[37],"vortical":[38,61],"structures.":[39,105],"This":[40],"paper":[41],"presents":[42],"novel":[44,75],"framework":[45],"for":[46,137,196],"the":[47,89,118,162,190],"extraction":[48,199],"of":[49,94],"hairpin":[50,95,103,120,145,197],"from":[52,149],"layers.":[55],"The":[56],"method":[57,164,191],"begins":[58],"by":[59],"identifying":[60],"regions":[62,99,107],"decomposing":[64],"them":[65],"into":[66],"smaller":[67],"segments":[68,86],"using":[69,126],"merge":[70],"tree":[71],"based":[72,129],"segmentation.":[73],"A":[74],"bottom":[76],"up":[77],"rejoining":[78],"approach":[79],"is":[80,192],"then":[81],"introduced":[82],"group":[84],"candidate":[85],"according":[87],"geometric":[90],"physical":[92],"characteristics":[93],"vortices,":[96],"resulting":[97],"that":[100,189],"encompass":[101],"complete":[102],"vortex":[104,198],"These":[106],"subsequently":[109],"refined":[110],"validated":[112],"through":[113],"skeleton":[114],"analysis":[115],"detect":[117],"characteristic":[119],"shape":[121],"further":[124],"confirmed":[125],"additional":[127],"scalar":[128],"criteria.":[130],"Finally,":[131],"smooth":[132],"enclosing":[133],"surfaces":[134],"generated":[136],"effective":[138,195],"visualization.":[139],"To":[140],"enable":[141],"quantitative":[142],"evaluation,":[143],"reference":[144],"extracted":[148],"several":[150],"flow":[151,186],"datasets":[152],"used":[154],"as":[155],"ground":[156],"truth.":[157],"Compared":[158],"existing":[160],"approaches,":[161],"proposed":[163],"eliminates":[165],"manual":[166],"parameter":[167],"tuning,":[168],"reduces":[169],"under":[170,200],"over":[172],"segmentation,":[173],"significantly":[175],"improves":[176],"both":[177],"accuracy":[178],"computational":[180],"efficiency.":[181],"Demonstrations":[182],"on":[183],"multiple":[184],"cases":[187],"show":[188],"robust":[193],"layer":[203],"conditions.":[204]},"counts_by_year":[],"updated_date":"2026-07-01T06:00:48.157686","created_date":"2026-06-06T00:00:00"}