{"id":"https://openalex.org/W7126080359","doi":"https://doi.org/10.24425/ather.2025.156845","title":"A theoretical investigation of magnetohydrodynamics, couple stress and viscosity variation on squeeze film lubrication between a cylinder and rough porous flat surface","display_name":"A theoretical investigation of magnetohydrodynamics, couple stress and viscosity variation on squeeze film lubrication between a cylinder and rough porous flat surface","publication_year":2025,"publication_date":"2025-12-18","ids":{"openalex":"https://openalex.org/W7126080359","doi":"https://doi.org/10.24425/ather.2025.156845"},"language":"pl","primary_location":{"id":"doi:10.24425/ather.2025.156845","doi":"https://doi.org/10.24425/ather.2025.156845","is_oa":true,"landing_page_url":"https://doi.org/10.24425/ather.2025.156845","pdf_url":null,"source":{"id":"https://openalex.org/S2736781214","display_name":"Archives of Thermodynamics","issn_l":"1231-0956","issn":["1231-0956","2083-6023"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Archives of Thermodynamics","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.24425/ather.2025.156845","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5116300453","display_name":"Suresha Ramareddy","orcid":"https://orcid.org/0000-0001-8459-8844","observed_orcids":["https://orcid.org/0000-0001-8459-8844"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Suresha Ramareddy","raw_affiliation_strings":["Department of Mathematics, Jain (Deemed-to-be University), Kanakapura Taluk, Ramanagara District 562112, Karnataka, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics, Jain (Deemed-to-be University), Kanakapura Taluk, Ramanagara District 562112, Karnataka, India","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124272650","display_name":"Arunkumar Rudrappa","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Arunkumar Rudrappa","raw_affiliation_strings":["Department of Mathematics, Sai Vidya Institute of Technology, Bangalore 560064, Karnataka, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics, Sai Vidya Institute of Technology, Bangalore 560064, Karnataka, India","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008217749","display_name":"Bannihalli Naganagowda Hanumagowda","orcid":"https://orcid.org/0000-0002-1210-0231","observed_orcids":["https://orcid.org/0000-0002-1210-0231"]},"institutions":[{"id":"https://openalex.org/I4405256143","display_name":"GM University Davanagere Karnataka","ror":"https://ror.org/03tmbn325","country_code":"IN","type":"education","lineage":["https://openalex.org/I4405256143"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Bannihalli Naganagowda Hanumagowda","raw_affiliation_strings":["Department of Mathematics, GM University, Davangere 577006, Karnataka, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics, GM University, Davangere 577006, Karnataka, India","institution_ids":["https://openalex.org/I4405256143"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5047556816","display_name":"Raghavendra Subramanya","orcid":"https://orcid.org/0000-0003-4276-9638","observed_orcids":["https://orcid.org/0000-0003-4276-9638"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Subramanya Raghavendra","raw_affiliation_strings":["Department of Mechanical Engineering, Sai Vidya Institute of Technology, Bangalore 560064, Karnataka, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, Sai Vidya Institute of Technology, Bangalore 560064, Karnataka, India","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"141","last_page":"156"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11138","display_name":"Tribology and Lubrication Engineering","score":0.9990000128746033,"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/T11138","display_name":"Tribology and Lubrication Engineering","score":0.9990000128746033,"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/T11557","display_name":"Lubricants and Their Additives","score":0.0006000000284984708,"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/T11062","display_name":"Gear and Bearing Dynamics Analysis","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/squeeze-film-lubrication","display_name":"squeeze film lubrication","score":0.9990000128746033},{"id":"https://openalex.org/keywords/magnetohydrodynamics","display_name":"magnetohydrodynamics","score":0.8939999938011169},{"id":"https://openalex.org/keywords/couple-stress-fluid","display_name":"couple stress fluid","score":0.9430000185966492},{"id":"https://openalex.org/keywords/viscosity-changes","display_name":"viscosity changes","score":0.9020000100135803},{"id":"https://openalex.org/keywords/porous-media","display_name":"porous media","score":0.6949999928474426},{"id":"https://openalex.org/keywords/modified-reynolds-equation","display_name":"modified Reynolds equation","score":0.8479999899864197},{"id":"https://openalex.org/keywords/darcy-flow","display_name":"Darcy flow","score":0.8029999732971191},{"id":"https://openalex.org/keywords/load-carrying-capacity","display_name":"bearing capacity","score":0.8809999823570251},{"id":"https://openalex.org/keywords/squeeze-film-time","display_name":"squeeze film time","score":0.9710000157356262},{"id":"https://openalex.org/keywords/porosity-optimization","display_name":"porosity optimization","score":0.7089999914169312},{"id":"https://openalex.org/keywords/microelectromechanical-systems","display_name":"microelectromechanical systems","score":0.8169999718666077}],"concepts":[{"id":"https://openalex.org/C157334427","wikidata":"https://www.wikidata.org/wiki/Q7319639","display_name":"Reynolds equation","level":4,"score":0.7486000061035156},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.7475000023841858},{"id":"https://openalex.org/C184608416","wikidata":"https://www.wikidata.org/wiki/Q1455803","display_name":"Lubrication","level":2,"score":0.7335000038146973},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.6836000084877014},{"id":"https://openalex.org/C127172972","wikidata":"https://www.wikidata.org/wiki/Q128709","display_name":"Viscosity","level":2,"score":0.6053000092506409},{"id":"https://openalex.org/C203311528","wikidata":"https://www.wikidata.org/wiki/Q34132","display_name":"Cylinder","level":2,"score":0.5525000095367432},{"id":"https://openalex.org/C167310744","wikidata":"https://www.wikidata.org/wiki/Q193870","display_name":"Tribology","level":2,"score":0.532800018787384},{"id":"https://openalex.org/C107365816","wikidata":"https://www.wikidata.org/wiki/Q114817","display_name":"Surface roughness","level":2,"score":0.5324000120162964},{"id":"https://openalex.org/C132798551","wikidata":"https://www.wikidata.org/wiki/Q1192753","display_name":"Fluid bearing","level":3,"score":0.5271999835968018},{"id":"https://openalex.org/C71039073","wikidata":"https://www.wikidata.org/wiki/Q3439090","display_name":"Surface finish","level":2,"score":0.5174999833106995},{"id":"https://openalex.org/C6648577","wikidata":"https://www.wikidata.org/wiki/Q622669","display_name":"Porosity","level":2,"score":0.4250999987125397},{"id":"https://openalex.org/C162802515","wikidata":"https://www.wikidata.org/wiki/Q2858941","display_name":"Lubrication theory","level":3,"score":0.38920000195503235},{"id":"https://openalex.org/C105569014","wikidata":"https://www.wikidata.org/wiki/Q3271208","display_name":"Porous medium","level":3,"score":0.3864000141620636},{"id":"https://openalex.org/C38349280","wikidata":"https://www.wikidata.org/wiki/Q1434290","display_name":"Flow (mathematics)","level":2,"score":0.36579999327659607},{"id":"https://openalex.org/C2779459783","wikidata":"https://www.wikidata.org/wiki/Q16954269","display_name":"Darcy number","level":5,"score":0.3601999878883362},{"id":"https://openalex.org/C182310444","wikidata":"https://www.wikidata.org/wiki/Q1332643","display_name":"Boundary value problem","level":2,"score":0.3553999960422516},{"id":"https://openalex.org/C21036866","wikidata":"https://www.wikidata.org/wiki/Q181767","display_name":"Stress (linguistics)","level":2,"score":0.34779998660087585},{"id":"https://openalex.org/C183447037","wikidata":"https://www.wikidata.org/wiki/Q392416","display_name":"Darcy's law","level":4,"score":0.3386000096797943},{"id":"https://openalex.org/C154954056","wikidata":"https://www.wikidata.org/wiki/Q1604164","display_name":"Transverse plane","level":2,"score":0.33009999990463257},{"id":"https://openalex.org/C182748727","wikidata":"https://www.wikidata.org/wiki/Q178932","display_name":"Reynolds number","level":3,"score":0.32839998602867126},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.3093000054359436},{"id":"https://openalex.org/C31532427","wikidata":"https://www.wikidata.org/wiki/Q2549249","display_name":"Magnetohydrodynamics","level":3,"score":0.2872999906539917},{"id":"https://openalex.org/C64297162","wikidata":"https://www.wikidata.org/wiki/Q1987070","display_name":"Deposition (geology)","level":3,"score":0.2782999873161316},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.2599000036716461}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.24425/ather.2025.156845","doi":"https://doi.org/10.24425/ather.2025.156845","is_oa":true,"landing_page_url":"https://doi.org/10.24425/ather.2025.156845","pdf_url":null,"source":{"id":"https://openalex.org/S2736781214","display_name":"Archives of Thermodynamics","issn_l":"1231-0956","issn":["1231-0956","2083-6023"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Archives of Thermodynamics","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.24425/ather.2025.156845","doi":"https://doi.org/10.24425/ather.2025.156845","is_oa":true,"landing_page_url":"https://doi.org/10.24425/ather.2025.156845","pdf_url":null,"source":{"id":"https://openalex.org/S2736781214","display_name":"Archives of Thermodynamics","issn_l":"1231-0956","issn":["1231-0956","2083-6023"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Archives of Thermodynamics","raw_type":"journal-article"},"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/W4390270336","https://openalex.org/W7115180481","https://openalex.org/W7131094942","https://openalex.org/W4410322990","https://openalex.org/W4388819236","https://openalex.org/W7139984474","https://openalex.org/W4406025153","https://openalex.org/W3080842741","https://openalex.org/W2131798462","https://openalex.org/W2148346296"],"abstract_inverted_index":{"Squeeze":[0],"film":[1,98,131],"lubrication":[2,37],"involving":[3],"couple":[4,111],"stress":[5],"fluids,":[6],"viscosity":[7,116],"variation":[8,117],"and":[9,22,42,72,96,103,115,129,162,192,199],"magnetohydrodynamics":[10,113],"is":[11],"critically":[12],"important":[13],"for":[14,63,68,88,100,184],"high-performance":[15],"applications":[16],"in":[17,188,196],"automotive":[18],"systems,":[19],"aerospace":[20],"mechanisms":[21],"biomedical":[23],"devices.":[24],"This":[25,76],"study":[26],"aims":[27],"to":[28,84,127,135],"examine":[29],"the":[30,91,166],"combined":[31],"influence":[32],"of":[33,93,160],"these":[34],"effects":[35],"on":[36],"performance":[38],"between":[39],"a":[40,43,53],"cylinder":[41],"rough":[44],"porous":[45,69],"flat":[46],"surface.":[47],"To":[48],"achieve":[49],"this,":[50],"we":[51],"developed":[52],"generalised":[54],"modified":[55],"Reynolds":[56],"equation":[57,77],"by":[58,125,133],"integrating":[59],"Christensen\u2019s":[60],"stochastic":[61],"model":[62],"surface":[64],"roughness,":[65],"Darcy\u2019s":[66],"law":[67],"media":[70],"flow,":[71],"Stokes":[73],"flow":[74],"theory.":[75],"was":[78],"solved":[79],"with":[80],"appropriate":[81],"boundary":[82],"conditions":[83],"derive":[85],"analytical":[86],"expressions":[87],"pressure,":[89],"enabling":[90],"calculation":[92],"load-carrying":[94,123],"capacity":[95,124],"squeeze":[97,130],"time":[99,132],"both":[101],"longitudinal":[102,141],"transverse":[104,148],"roughness":[105,142,149,161],"patterns.":[106],"Key":[107],"findings":[108],"demonstrate":[109],"that":[110,157],"stress,":[112],"effects,":[114],"significantly":[118],"enhance":[119],"pressure":[120],"distribution,":[121],"increasing":[122],"up":[126,134],"85.29%":[128],"85.34%":[136],"under":[137],"optimal":[138,158],"conditions.":[139],"Notably,":[140],"pattern":[143,150],"degrades":[144],"tribological":[145,186],"performance,":[146],"whereas":[147],"enhances":[151],"it.":[152],"Furthermore,":[153],"three-dimensional":[154],"analysis":[155],"demonstrates":[156],"tuning":[159],"porosity":[163],"parameters":[164],"maximises":[165],"system":[167],"performance.":[168],"These":[169],"findings,":[170],"validated":[171],"against":[172],"established":[173],"results":[174],"like":[175],"Lin":[176],"et":[177],"al.":[178],"[31],":[179],"provide":[180],"valuable":[181],"design":[182],"guidelines":[183],"optimising":[185],"systems":[187],"fields":[189],"requiring":[190],"precise":[191],"durable":[193],"lubrication,":[194],"particularly":[195],"precision":[197],"manufacturing":[198],"microelectromechanical":[200],"systems.":[201]},"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2026-01-30T00:00:00"}