{"id":"https://openalex.org/W7225101496","doi":"https://doi.org/10.1007/s10494-026-00803-6","title":"Suppression of Flow Instability and Mitigation of Performance Degradation in Compact Axial-Flow Fan with Upstream Obstacle Using Grid-Type Filter","display_name":"Suppression of Flow Instability and Mitigation of Performance Degradation in Compact Axial-Flow Fan with Upstream Obstacle Using Grid-Type Filter","publication_year":2026,"publication_date":"2026-11-02","ids":{"openalex":"https://openalex.org/W7225101496","doi":"https://doi.org/10.1007/s10494-026-00803-6"},"language":"en","primary_location":{"id":"doi:10.1007/s10494-026-00803-6","doi":"https://doi.org/10.1007/s10494-026-00803-6","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s10494-026-00803-6","pdf_url":"https://link.springer.com/content/pdf/10.1007/s10494-026-00803-6.pdf","source":{"id":"https://openalex.org/S4210200752","display_name":"Flow Turbulence and Combustion","issn_l":"1386-6184","issn":["1386-6184","1573-1987"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Flow, Turbulence and Combustion","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://link.springer.com/content/pdf/10.1007/s10494-026-00803-6.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5160341030","display_name":"Kota Nakamori","orcid":"https://orcid.org/0009-0005-8894-5395","observed_orcids":["https://orcid.org/0009-0005-8894-5395"]},"institutions":[{"id":"https://openalex.org/I185088104","display_name":"Tokyo City University","ror":"https://ror.org/04dt6bw53","country_code":"JP","type":"education","lineage":["https://openalex.org/I185088104"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kota Nakamori","raw_affiliation_strings":["Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan"],"raw_orcid":"https://orcid.org/0009-0005-8894-5395","affiliations":[{"raw_affiliation_string":"Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan","institution_ids":["https://openalex.org/I185088104"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5160382456","display_name":"Yuma Osawa","orcid":"https://orcid.org/0009-0000-6007-6574","observed_orcids":["https://orcid.org/0009-0000-6007-6574"]},"institutions":[{"id":"https://openalex.org/I185088104","display_name":"Tokyo City University","ror":"https://ror.org/04dt6bw53","country_code":"JP","type":"education","lineage":["https://openalex.org/I185088104"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuma Osawa","raw_affiliation_strings":["Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan"],"raw_orcid":"https://orcid.org/0009-0000-6007-6574","affiliations":[{"raw_affiliation_string":"Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan","institution_ids":["https://openalex.org/I185088104"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5153406273","display_name":"Mitsuru Koga","orcid":"https://orcid.org/0009-0004-2617-4911","observed_orcids":["https://orcid.org/0009-0004-2617-4911"]},"institutions":[{"id":"https://openalex.org/I185088104","display_name":"Tokyo City University","ror":"https://ror.org/04dt6bw53","country_code":"JP","type":"education","lineage":["https://openalex.org/I185088104"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mitsuru Koga","raw_affiliation_strings":["Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan"],"raw_orcid":"https://orcid.org/0009-0004-2617-4911","affiliations":[{"raw_affiliation_string":"Graduate School of Integrative Science and Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan","institution_ids":["https://openalex.org/I185088104"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047454618","display_name":"Koichi Nishibe","orcid":"https://orcid.org/0000-0001-8152-8146","observed_orcids":["https://orcid.org/0000-0001-8152-8146"]},"institutions":[{"id":"https://openalex.org/I185088104","display_name":"Tokyo City University","ror":"https://ror.org/04dt6bw53","country_code":"JP","type":"education","lineage":["https://openalex.org/I185088104"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Koichi Nishibe","raw_affiliation_strings":["Department of Mechanical Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan"],"raw_orcid":"https://orcid.org/0000-0001-8152-8146","affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, Tokyo City University 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan","institution_ids":["https://openalex.org/I185088104"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100868153","display_name":"Donghyuk KANG","orcid":"https://orcid.org/0009-0000-7995-0145","observed_orcids":["https://orcid.org/0009-0000-7995-0145"]},"institutions":[{"id":"https://openalex.org/I72253084","display_name":"Saitama University","ror":"https://ror.org/02evnh647","country_code":"JP","type":"education","lineage":["https://openalex.org/I72253084"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Donghyuk Kang","raw_affiliation_strings":["Department of Mechanical Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan"],"raw_orcid":"https://orcid.org/0009-0000-7995-0145","affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan","institution_ids":["https://openalex.org/I72253084"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103256734","display_name":"Kotaro Sato","orcid":"https://orcid.org/0000-0001-8276-8977","observed_orcids":["https://orcid.org/0000-0001-8276-8977"]},"institutions":[{"id":"https://openalex.org/I116465919","display_name":"Kogakuin University","ror":"https://ror.org/01wc2tq75","country_code":"JP","type":"education","lineage":["https://openalex.org/I116465919"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kotaro Sato","raw_affiliation_strings":["Department of Mechanical System Engineering, Kogakuin University 2665-1, Nishishinjuku, Shinjuku-ku, Tokyo, Japan"],"raw_orcid":"https://orcid.org/0000-0001-8276-8977","affiliations":[{"raw_affiliation_string":"Department of Mechanical System Engineering, Kogakuin University 2665-1, Nishishinjuku, Shinjuku-ku, Tokyo, Japan","institution_ids":["https://openalex.org/I116465919"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5047454618"],"corresponding_institution_ids":["https://openalex.org/I185088104"],"apc_list":{"value":2590,"currency":"USD","value_usd":2590},"apc_paid":{"value":2590,"currency":"USD","value_usd":2590},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.80037579,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"117","issue":"4","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10944","display_name":"Turbomachinery Performance and Optimization","score":0.9984999895095825,"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/T10944","display_name":"Turbomachinery Performance and Optimization","score":0.9984999895095825,"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/T11008","display_name":"Aerodynamics and Acoustics in Jet Flows","score":0.0003000000142492354,"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/T10173","display_name":"Computational Fluid Dynamics and Aerodynamics","score":0.00019999999494757503,"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/filter-porosity","display_name":"filter porosity","score":0.9940000176429749},{"id":"https://openalex.org/keywords/pressure-drop","display_name":"pressure drop","score":0.7570000290870667},{"id":"https://openalex.org/keywords/bayesian-optimization","display_name":"Bayesian optimization","score":0.8500000238418579},{"id":"https://openalex.org/keywords/multi-objective-optimization","display_name":"multi-objective optimization","score":0.7940000295639038}],"concepts":[{"id":"https://openalex.org/C191172861","wikidata":"https://www.wikidata.org/wiki/Q7899321","display_name":"Upstream (networking)","level":2,"score":0.6854000091552734},{"id":"https://openalex.org/C207821765","wikidata":"https://www.wikidata.org/wiki/Q405372","display_name":"Instability","level":2,"score":0.638700008392334},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.5722000002861023},{"id":"https://openalex.org/C114088122","wikidata":"https://www.wikidata.org/wiki/Q1261069","display_name":"Pressure drop","level":2,"score":0.5720999836921692},{"id":"https://openalex.org/C201289731","wikidata":"https://www.wikidata.org/wiki/Q1172599","display_name":"Inlet","level":2,"score":0.527999997138977},{"id":"https://openalex.org/C38349280","wikidata":"https://www.wikidata.org/wiki/Q1434290","display_name":"Flow (mathematics)","level":2,"score":0.5077999830245972},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.492000013589859},{"id":"https://openalex.org/C1633027","wikidata":"https://www.wikidata.org/wiki/Q815820","display_name":"Computational fluid dynamics","level":2,"score":0.49059998989105225},{"id":"https://openalex.org/C146778888","wikidata":"https://www.wikidata.org/wiki/Q836862","display_name":"Installation","level":2,"score":0.4666000008583069},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4650000035762787},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.45320001244544983},{"id":"https://openalex.org/C186394612","wikidata":"https://www.wikidata.org/wiki/Q7098942","display_name":"Optimal design","level":2,"score":0.43689998984336853},{"id":"https://openalex.org/C2779679103","wikidata":"https://www.wikidata.org/wiki/Q5251805","display_name":"Degradation (telecommunications)","level":2,"score":0.41110000014305115},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.3905999958515167},{"id":"https://openalex.org/C187691185","wikidata":"https://www.wikidata.org/wiki/Q2020720","display_name":"Grid","level":2,"score":0.3790999948978424},{"id":"https://openalex.org/C2781424430","wikidata":"https://www.wikidata.org/wiki/Q5462093","display_name":"Flow conditions","level":3,"score":0.37400001287460327},{"id":"https://openalex.org/C128489963","wikidata":"https://www.wikidata.org/wiki/Q1187724","display_name":"Filtration (mathematics)","level":2,"score":0.3646000027656555},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.36320000886917114},{"id":"https://openalex.org/C2776650193","wikidata":"https://www.wikidata.org/wiki/Q264661","display_name":"Obstacle","level":2,"score":0.2953999936580658},{"id":"https://openalex.org/C6648577","wikidata":"https://www.wikidata.org/wiki/Q622669","display_name":"Porosity","level":2,"score":0.28870001435279846},{"id":"https://openalex.org/C158980903","wikidata":"https://www.wikidata.org/wiki/Q7899329","display_name":"Upstream and downstream (DNA)","level":3,"score":0.2863999903202057},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.2831000089645386},{"id":"https://openalex.org/C112972136","wikidata":"https://www.wikidata.org/wiki/Q7595718","display_name":"Stability (learning theory)","level":2,"score":0.2676999866962433},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.26179999113082886}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s10494-026-00803-6","doi":"https://doi.org/10.1007/s10494-026-00803-6","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s10494-026-00803-6","pdf_url":"https://link.springer.com/content/pdf/10.1007/s10494-026-00803-6.pdf","source":{"id":"https://openalex.org/S4210200752","display_name":"Flow Turbulence and Combustion","issn_l":"1386-6184","issn":["1386-6184","1573-1987"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Flow, Turbulence and Combustion","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1007/s10494-026-00803-6","doi":"https://doi.org/10.1007/s10494-026-00803-6","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s10494-026-00803-6","pdf_url":"https://link.springer.com/content/pdf/10.1007/s10494-026-00803-6.pdf","source":{"id":"https://openalex.org/S4210200752","display_name":"Flow Turbulence and Combustion","issn_l":"1386-6184","issn":["1386-6184","1573-1987"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Flow, Turbulence and Combustion","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.571399986743927}],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320316691","display_name":"Tokyo City University","ror":"https://ror.org/04dt6bw53"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7225101496.pdf","grobid_xml":"https://content.openalex.org/works/W7225101496.grobid-xml"},"referenced_works_count":9,"referenced_works":["https://openalex.org/W91424654","https://openalex.org/W1982022354","https://openalex.org/W2019209252","https://openalex.org/W2029063272","https://openalex.org/W3036481889","https://openalex.org/W3111053404","https://openalex.org/W3201195888","https://openalex.org/W4386072886","https://openalex.org/W4416902864"],"related_works":["https://openalex.org/W2690039538","https://openalex.org/W4386072886","https://openalex.org/W2965926763","https://openalex.org/W2723339047","https://openalex.org/W3036481889","https://openalex.org/W2066797978","https://openalex.org/W4389681304","https://openalex.org/W4294875941","https://openalex.org/W2093475414","https://openalex.org/W2646388584"],"abstract_inverted_index":{"Abstract":[0],"We":[1,49],"propose":[2],"installing":[3,109],"grid-type":[4,110],"filters":[5,111],"at":[6,112],"compact":[7,96],"axial-flow":[8,97],"fan":[9,19,98,114],"inlets":[10],"to":[11,43,146],"suppress":[12],"flow":[13,84,119],"instability":[14,85],"and":[15,73,87,91,140,150],"prevent":[16],"degradation":[17],"of":[18,29,53,56,68,94,102],"performance":[20,90],"in":[21,99,128],"environments":[22],"with":[23],"an":[24,103],"upstream":[25,104],"obstacle.":[26,105],"The":[27],"effectiveness":[28],"this":[30],"approach":[31],"was":[32,125],"investigated":[33],"primarily":[34],"through":[35],"experiments,":[36],"complemented":[37],"by":[38,163],"computational":[39],"fluid":[40],"dynamics":[41],"analyses":[42],"investigate":[44],"the":[45,51,57,79,89,95,100,113,118,147,156],"flow-instability":[46],"suppression":[47],"mechanism.":[48],"examined":[50],"effects":[52],"different":[54],"combinations":[55],"main":[58],"filter":[59,124],"design":[60],"factors":[61],"such":[62],"as":[63],"mesh":[64],"size":[65],"(the":[66],"area":[67],"a":[69,107,133],"unit":[70],"grid":[71],"cell)":[72],"porosity":[74],"(open-area":[75],"ratio)":[76],"on":[77],"(i)":[78],"flow-rate":[80],"range":[81],"over":[82],"which":[83,159],"occurs":[86],"(ii)":[88],"efficiency":[92],"curves":[93],"presence":[101],"As":[106],"result,":[108],"inlet":[115],"successfully":[116],"suppressed":[117],"instability.":[120],"An":[121],"annular":[122],"grid\u2011type":[123,135,157],"more":[126],"effective":[127],"reducing":[129],"pressure":[130],"loss":[131],"than":[132],"circular":[134],"filter.":[136],"Furthermore,":[137],"both":[138],"single\u2011":[139],"multi\u2011objective":[141],"Bayesian":[142],"optimization":[143],"were":[144,160],"applied":[145],"experimental":[148],"results,":[149],"we":[151],"identified":[152],"optimal":[153],"specifications":[154],"for":[155],"filters,":[158],"subsequently":[161],"validated":[162],"experiments.":[164]},"counts_by_year":[],"updated_date":"2026-11-05T12:25:35.769452","created_date":"2026-11-03T00:00:00"}
