{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T05:18:09Z","timestamp":1767676689777,"version":"3.38.0"},"reference-count":44,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2014,3,14]],"date-time":"2014-03-14T00:00:00Z","timestamp":1394755200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology"],"published-print":{"date-parts":[[2014,9]]},"abstract":"<jats:p> The performance of hydrodynamic journal bearings is affected by the conditions under which the lubricant is fed to the bearing gap. Axial grooves are often used and, depending on their location relatively to the load line, they might substantially interfere with the hydrodynamic pressure generation and the thermal behaviour of the bearing. However, many of the existing tools for predicting bearing performance are not able to suitably predict bearing behaviour under varying load angle given the oversimplified way under which they treat lubricant feeding conditions. The present work proposes a detailed thermohydrodynamic approach which realistically incorporates these conditions into the bearing analysis. Special care is put on the mass and energy-conserving models of the ruptured film region and on a detailed treatment of lubricant mixing within the vicinity of grooves. This includes the first full modelling of the effect of negative flow rate in a groove, a phenomenon originally described experimentally in detail by the authors in previous publications, and which happens for a broad range of load\/groove angles. An extensive investigation on the influence of loading direction on the performance of twin groove journal bearings has been performed. This parameter is found to affect deeply all major performance parameters due to the interference of groove regions in the hydrodynamic pressure generation and in the flow rates at each groove. <\/jats:p>","DOI":"10.1177\/1350650114526388","type":"journal-article","created":{"date-parts":[[2014,3,15]],"date-time":"2014-03-15T03:02:17Z","timestamp":1394852537000},"page":"955-973","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":17,"title":["Thermohydrodynamic modelling of journal bearings under varying load angle and negative groove flow rate"],"prefix":"10.1177","volume":"228","author":[{"given":"FP","family":"Brito","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Universidade do Minho, Guimar\u00e3es, Portugal"}]},{"given":"AS","family":"Miranda","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Universidade do Minho, Guimar\u00e3es, Portugal"}]},{"given":"JCP","family":"Claro","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Universidade do Minho, Guimar\u00e3es, Portugal"}]},{"given":"JC","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Universidade do Minho, Guimar\u00e3es, Portugal"}]},{"given":"L","family":"Costa","sequence":"additional","affiliation":[{"name":"Ministry of Energy and Water\/DNAAS, Luanda, Angola"}]},{"given":"M","family":"Fillon","sequence":"additional","affiliation":[{"name":"Institut Pprime, CNRS \u2013 Universit\u00e9 de Poitiers \u2013 ENSMA, Dept G\u00e9nie M\u00e9canique et Syst\u00e8mes Complexes, Futuroscope Chasseneuil, France"}]}],"member":"179","published-online":{"date-parts":[[2014,3,14]]},"reference":[{"key":"bibr1-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/PIME_PROC_1993_207_105_02"},{"key":"bibr2-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/13506500360603561"},{"key":"bibr3-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2013.11.016"},{"key":"bibr4-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.555347"},{"key":"bibr5-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.2401206"},{"key":"bibr6-1350650114526388","unstructured":"Brito FP, Miranda AS, Claro JCP, et al. The role of each groove on the behavior of twin axial groove journal bearings. In: IBERTRIB \u2013 Congreso Ib\u00e9rico de Tribolog\u00eda, Escuela de Ingenieros, Bilbau, 20\u201321 June 2007, CD-ROM."},{"key":"bibr7-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1504\/IJSURFSE.2011.044278"},{"key":"bibr8-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2012.04.026"},{"key":"bibr9-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1177\/1350650111401970"},{"key":"bibr10-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/PIME_PROC_1985_199_099_02"},{"key":"bibr11-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/13506501JET772"},{"key":"bibr12-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/10402009208982111"},{"key":"bibr13-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.3261166"},{"key":"bibr14-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/10402009208982085"},{"key":"bibr15-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/0301-679X(87)90026-0"},{"key":"bibr16-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/1350650001543322"},{"key":"bibr17-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.2920888"},{"key":"bibr18-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/1350650001543034"},{"key":"bibr19-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/05698198708981726"},{"key":"bibr20-1350650114526388","first-page":"11","volume-title":"In: Proceedings of the seminar on developments in plain bearings for the \u201990s, IMechE Tribology Group","author":"Basri H","year":"1990"},{"key":"bibr21-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/0301-679X(87)90073-9"},{"key":"bibr22-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/PIME_PROC_1990_204_081_02"},{"key":"bibr23-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2008.10.010"},{"key":"bibr24-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2009.04.001"},{"key":"bibr25-1350650114526388","unstructured":"Brito FP. Thermohydrodynamic performance of twin groove journal bearings considering realistic lubricant supply conditions: an experimental and theoretical study, Guimar\u00e3es, Portugal: PhD Thesis, School of Engineering, Universidade do Minho, 2009. http:\/\/repositorium.sdum.uminho.pt\/handle\/1822\/9884."},{"volume-title":"Thermal aspects of fluid film tribology","year":"1990","author":"Pinkus O","key":"bibr26-1350650114526388"},{"key":"bibr27-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.3251669"},{"key":"bibr28-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.2920850"},{"key":"bibr29-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.3254632"},{"key":"bibr30-1350650114526388","unstructured":"Pierre I and Fillon M. Validity limit of the two-dimensional thermohydrodynamic analysis of plain journal bearings. In: Proceedings of the international tribology conference, ITC 2000, Nagasaki, Japan, 29 October\u20132 November 2000, Japanese Society of Tribologists, vol. III, pp.1555\u20131560."},{"key":"bibr31-1350650114526388","first-page":"354","volume-title":"Collection de la direction des \u00c9tudes et Recherches d'\u00c9lectricit\u00e9 de France","author":"Fr\u00eane J","year":"1990"},{"key":"bibr32-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/10402009108982025"},{"key":"bibr33-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/10402000108982430"},{"key":"bibr34-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/1350650042128021"},{"key":"bibr35-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/135065005X33900"},{"key":"bibr36-1350650114526388","first-page":"70","volume":"101","author":"Dowson D","year":"1966","journal-title":"Proc IMechE Part B: J Engineering Manufacture"},{"key":"bibr37-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.3261706"},{"volume-title":"In: IMechE seminar: plain bearings \u2013 energy efficiency and design, mech. engs","year":"1992","author":"Ma MT","key":"bibr38-1350650114526388"},{"key":"bibr39-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1243\/1350650042128012"},{"key":"bibr40-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1080\/05698190490513974"},{"key":"bibr41-1350650114526388","unstructured":"Brito FP, Bouyer J, Fillon M, et al. Experimental investigation on the thermal behavior and performance characteristics of a twin axial groove journal bearing as a function of applied load and rotational speed. In: 5th international conference on mechanics & materials in design \u2013 M2D\u20192006, symposium on wear and lubrication in design, FEUP, Porto, 24\u201326 July 2006. CD-ROM (ISBN 972-8826-10-9)."},{"volume-title":"ESDU item no. 84031. Calculation methods for steadily loaded axial groove hydrodynamic journal bearings","year":"1984","author":"Engineering Science Data Unit, ESDU","key":"bibr42-1350650114526388"},{"key":"bibr43-1350650114526388","doi-asserted-by":"publisher","DOI":"10.1115\/1.1402130"},{"key":"bibr44-1350650114526388","unstructured":"Brito FP, Miranda AS, Claro JCP, et al. On the occurrence of negative groove flow rate in twin groove hydrodynamic journal bearings. 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