{"id":"https://openalex.org/W2158759714","doi":"https://doi.org/10.3390/e7010038","title":"Numerical Study On Local Entropy Generation In Compressible Flow Through A Suddenly Expanding Pipe","display_name":"Numerical Study On Local Entropy Generation In Compressible Flow Through A Suddenly Expanding Pipe","publication_year":2005,"publication_date":"2005-02-11","ids":{"openalex":"https://openalex.org/W2158759714","doi":"https://doi.org/10.3390/e7010038","mag":"2158759714"},"language":"en","primary_location":{"id":"doi:10.3390/e7010038","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e7010038","pdf_url":"https://www.mdpi.com/1099-4300/7/1/38/pdf?version=1424784627","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"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":"Entropy","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1099-4300/7/1/38/pdf?version=1424784627","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5088417858","display_name":"H\u00fcseyin Yap\u0131c\u0131","orcid":"https://orcid.org/0000-0003-2994-7786"},"institutions":[{"id":"https://openalex.org/I87673952","display_name":"Erciyes University","ror":"https://ror.org/047g8vk19","country_code":"TR","type":"education","lineage":["https://openalex.org/I87673952"]}],"countries":["TR"],"is_corresponding":true,"raw_author_name":"H\u00fcseyin Yapici","raw_affiliation_strings":["Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey","institution_ids":["https://openalex.org/I87673952"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028073630","display_name":"Nesrin Kayata\u015f","orcid":null},"institutions":[{"id":"https://openalex.org/I87673952","display_name":"Erciyes University","ror":"https://ror.org/047g8vk19","country_code":"TR","type":"education","lineage":["https://openalex.org/I87673952"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Nesrin Kayatas","raw_affiliation_strings":["Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey","institution_ids":["https://openalex.org/I87673952"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016851389","display_name":"Nafiz Kahraman","orcid":"https://orcid.org/0000-0002-8698-8632"},"institutions":[{"id":"https://openalex.org/I87673952","display_name":"Erciyes University","ror":"https://ror.org/047g8vk19","country_code":"TR","type":"education","lineage":["https://openalex.org/I87673952"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Nafiz Kahraman","raw_affiliation_strings":["Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey","institution_ids":["https://openalex.org/I87673952"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5050565425","display_name":"Gamze Ba\u015ft\u00fcrk","orcid":null},"institutions":[{"id":"https://openalex.org/I87673952","display_name":"Erciyes University","ror":"https://ror.org/047g8vk19","country_code":"TR","type":"education","lineage":["https://openalex.org/I87673952"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Gamze Bast\u00fcrk","raw_affiliation_strings":["Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Erciyes \u00dcniversitesi M\u00fchendislik Fak\u00fcltesi, 38039 Kayseri,Turkey","institution_ids":["https://openalex.org/I87673952"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5088417858"],"corresponding_institution_ids":["https://openalex.org/I87673952"],"apc_list":{"value":2000,"currency":"CHF","value_usd":2165},"apc_paid":{"value":2000,"currency":"CHF","value_usd":2165},"fwci":1.4386,"has_fulltext":true,"cited_by_count":20,"citation_normalized_percentile":{"value":0.84122988,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"7","issue":"1","first_page":"38","last_page":"67"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10998","display_name":"Heat Transfer and Optimization","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical 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/T10998","display_name":"Heat Transfer and Optimization","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical 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/T11520","display_name":"Advanced Thermodynamics and Statistical Mechanics","score":0.9983999729156494,"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/T10104","display_name":"Nanofluid Flow and Heat Transfer","score":0.9955999851226807,"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/mechanics","display_name":"Mechanics","score":0.6214462518692017},{"id":"https://openalex.org/keywords/computational-fluid-dynamics","display_name":"Computational fluid dynamics","score":0.5686432123184204},{"id":"https://openalex.org/keywords/thermodynamics","display_name":"Thermodynamics","score":0.5634157061576843},{"id":"https://openalex.org/keywords/compressibility","display_name":"Compressibility","score":0.5503458976745605},{"id":"https://openalex.org/keywords/turbulence","display_name":"Turbulence","score":0.5194486975669861},{"id":"https://openalex.org/keywords/heat-transfer","display_name":"Heat transfer","score":0.5092579126358032},{"id":"https://openalex.org/keywords/heat-flux","display_name":"Heat flux","score":0.48174452781677246},{"id":"https://openalex.org/keywords/entropy","display_name":"Entropy (arrow of time)","score":0.45941150188446045},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.4389122426509857},{"id":"https://openalex.org/keywords/mass-flow-rate","display_name":"Mass flow rate","score":0.41196587681770325},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.3564212918281555}],"concepts":[{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.6214462518692017},{"id":"https://openalex.org/C1633027","wikidata":"https://www.wikidata.org/wiki/Q815820","display_name":"Computational fluid dynamics","level":2,"score":0.5686432123184204},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.5634157061576843},{"id":"https://openalex.org/C84655787","wikidata":"https://www.wikidata.org/wiki/Q8067817","display_name":"Compressibility","level":2,"score":0.5503458976745605},{"id":"https://openalex.org/C196558001","wikidata":"https://www.wikidata.org/wiki/Q190132","display_name":"Turbulence","level":2,"score":0.5194486975669861},{"id":"https://openalex.org/C50517652","wikidata":"https://www.wikidata.org/wiki/Q179635","display_name":"Heat transfer","level":2,"score":0.5092579126358032},{"id":"https://openalex.org/C159188206","wikidata":"https://www.wikidata.org/wiki/Q1478382","display_name":"Heat flux","level":3,"score":0.48174452781677246},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.45941150188446045},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.4389122426509857},{"id":"https://openalex.org/C75892298","wikidata":"https://www.wikidata.org/wiki/Q1366187","display_name":"Mass flow rate","level":2,"score":0.41196587681770325},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3564212918281555}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.3390/e7010038","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e7010038","pdf_url":"https://www.mdpi.com/1099-4300/7/1/38/pdf?version=1424784627","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"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":"Entropy","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.296.7264","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.296.7264","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.mdpi.org/entropy/papers/e7010038.pdf","raw_type":"text"},{"id":"pmh:oai:doaj.org/article:fe35b22b16f24261b6db02b5a44e9e09","is_oa":true,"landing_page_url":"https://doaj.org/article/fe35b22b16f24261b6db02b5a44e9e09","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Entropy, Vol 7, Iss 1, Pp 38-67 (2005)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1099-4300/7/1/38/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/e7010038","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Entropy; Volume 7; Issue 1; Pages: 38-67","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/e7010038","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e7010038","pdf_url":"https://www.mdpi.com/1099-4300/7/1/38/pdf?version=1424784627","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"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":"Entropy","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.9100000262260437,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2158759714.pdf","grobid_xml":"https://content.openalex.org/works/W2158759714.grobid-xml"},"referenced_works_count":39,"referenced_works":["https://openalex.org/W1967663966","https://openalex.org/W1972053728","https://openalex.org/W1972192094","https://openalex.org/W1973178356","https://openalex.org/W1979107236","https://openalex.org/W1981952500","https://openalex.org/W1985390522","https://openalex.org/W1991531347","https://openalex.org/W1995909483","https://openalex.org/W2002799942","https://openalex.org/W2003935561","https://openalex.org/W2006259596","https://openalex.org/W2013936524","https://openalex.org/W2016713622","https://openalex.org/W2030505085","https://openalex.org/W2040632996","https://openalex.org/W2058011503","https://openalex.org/W2058020634","https://openalex.org/W2058408861","https://openalex.org/W2060586921","https://openalex.org/W2065580046","https://openalex.org/W2068697732","https://openalex.org/W2068740609","https://openalex.org/W2069234287","https://openalex.org/W2071783315","https://openalex.org/W2074181112","https://openalex.org/W2087674313","https://openalex.org/W2090622065","https://openalex.org/W2116861531","https://openalex.org/W2117648618","https://openalex.org/W2118621774","https://openalex.org/W2120856579","https://openalex.org/W2133753495","https://openalex.org/W2141121278","https://openalex.org/W2151386341","https://openalex.org/W2151924475","https://openalex.org/W2160945769","https://openalex.org/W2172291615","https://openalex.org/W3138547403"],"related_works":["https://openalex.org/W2902248750","https://openalex.org/W2583171488","https://openalex.org/W2012983134","https://openalex.org/W2275426735","https://openalex.org/W2189586792","https://openalex.org/W2134632713","https://openalex.org/W2016193480","https://openalex.org/W4386420887","https://openalex.org/W4253602111","https://openalex.org/W4388599312"],"abstract_inverted_index":{"This":[0],"study":[1],"presents":[2],"the":[3,6,27,55,58,62,69,74,78,98,101,123,132,135,139,150,165,168,176,179,188,192,204,212,225,228,232,235,253,256,267,270,280,290,296],"investigation":[4],"of":[5,57,86,100,134,146,175,178,191,227,234,255,269],"local":[7],"entropy":[8,75,124,194,206],"generation":[9,76,125,195,207],"in":[10,149,167],"compressible":[11,79],"flow":[12,80,90,140],"through":[13],"a":[14,30,114],"suddenly":[15],"expanding":[16],"pipe.":[17],"Air":[18],"is":[19,81],"used":[20],"as":[21,289,295],"fluid.":[22],"The":[23,38,89,144,173,216],"air":[24],"enters":[25],"into":[26],"pipe":[28],"with":[29,97,209,224,231,252,266],"turbulent":[31],"profile":[32],"using":[33,131],"1/7":[34],"th":[35],"power":[36],"law.":[37],"simulations":[39],"are":[40,94,155],"extended":[41],"to":[42,51,110,120,183,211,242,262,275,285],"include":[43],"different":[44],"expansion":[45],"ratios":[46],"reduced":[47],"gradually":[48],"from":[49,164],"5":[50,261],"1.":[52],"To":[53],"determine":[54],"effects":[56],"mass":[59,258,291],"flux,":[60],"\u03c6\"":[61],"ambient":[63,236],"heat":[64,237],"transfer":[65,238,283],"coefficient,":[66],"hamb,":[67],"and":[68,91,126,141,199,222,230,250,265,294],"inlet":[70,271,297],"temperature,":[71],"Tin,":[72],"on":[73],"rate,":[77,196],"examined":[82],"for":[83,138],"various":[84],"cases":[85],"these":[87],"parameters.":[88],"temperature":[92,142,272,298],"fields":[93],"computed":[95],"numerically":[96,122],"help":[99],"Fluent":[102],"computational":[103],"fluid":[104],"dynamics":[105],"(CFD)":[106],"code.":[107],"In":[108],"addition":[109],"this":[111],"CFD":[112],"code,":[113],"computer":[115],"program":[116],"has":[117],"been":[118],"developed":[119],"calculate":[121],"other":[127],"thermodynamic":[128,147],"parameters":[129,148],"by":[130,157,159],"results":[133],"calculations":[136,166],"performed":[137],"fields.":[143],"values":[145],"sudden":[151],"expansion.":[152],"(SE)":[153],"case":[154],"normalized":[156,217],"dividing":[158],"their":[160],"base":[161,214],"quantities":[162],"obtained":[163],"uniform":[169],"cross-section":[170,229],"(UC)":[171],"case.":[172],"contraction":[174,226],"radius":[177],"throat":[180],"(from":[181,240,260,273],"0.05":[182],"0.01":[184],"m)":[185],"increases":[186],"significantly":[187],"maximum":[189,257],"value":[190],"volumetric":[193],"(about":[197],"60%)":[198],"raises":[200],"exponentially":[201],"11":[202],"times":[203],"total":[205],"rate":[208,284,287],"respect":[210],"its":[213],"value.":[215],"merit":[218],"number":[219],"decreases":[220,293],"73%":[221],"40%":[223],"increase":[233,268],"coefficient":[239],"20":[241],"100":[243],"W/m2-K),":[244],"respectively,":[245],"whereas":[246],"it":[247],"rises":[248],"226%":[249],"43%":[251],"decrease":[254],"flux":[259,292],"1":[263],"kg/m2-s)":[264],"400":[274],"1000":[276],"K),":[277],"respectively.":[278],"Consequently,":[279],"useful":[281],"energy":[282],"irreversibility":[286],"improves":[288],"increases.":[299]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":3},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":2}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2016-06-24T00:00:00"}