Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer
The present paper gives a theoretical outline on liquid film flows driven by superimposed effects of interfacial shear and gravity forces and discusses related heat transfer processes which are relevant for lubrication oil systems of aero engines. It is shown that a simple analytical approach is abl...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
1999-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1023621X99000147 |
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| _version_ | 1832551776593641472 |
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| author | A. Glahn S. Wittig |
| author_facet | A. Glahn S. Wittig |
| author_sort | A. Glahn |
| collection | DOAJ |
| description | The present paper gives a theoretical outline on liquid film flows driven by superimposed effects of interfacial shear and gravity forces and discusses related heat transfer processes which are relevant for lubrication oil systems of aero engines. It is shown that a simple analytical approach is able to predict measured heat transfer data fairly well. Therefore, it offers scope for improvements within the analysis of bearing chamber heat transfer characteristics as well as for appropriate studies with respect to other components of the lubrication oil system such as vent pipeline elements. |
| format | Article |
| id | doaj-art-f29c3a998f14416e83bb716229ad75ee |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 1999-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-f29c3a998f14416e83bb716229ad75ee2025-02-03T06:00:34ZengWileyInternational Journal of Rotating Machinery1023-621X1999-01-015315516510.1155/S1023621X99000147Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat TransferA. Glahn0S. Wittig1UTRC, East Hartford, CT 06108, USALehrstuhl und Institut für Thermische Strömungsmaschinen, Universität Karlsruhe (TH), Karlsruhe D-76128, GermanyThe present paper gives a theoretical outline on liquid film flows driven by superimposed effects of interfacial shear and gravity forces and discusses related heat transfer processes which are relevant for lubrication oil systems of aero engines. It is shown that a simple analytical approach is able to predict measured heat transfer data fairly well. Therefore, it offers scope for improvements within the analysis of bearing chamber heat transfer characteristics as well as for appropriate studies with respect to other components of the lubrication oil system such as vent pipeline elements.http://dx.doi.org/10.1155/S1023621X99000147Bearing chamberHeat transferFilm thicknessVelocity profileShear drivenGravity. |
| spellingShingle | A. Glahn S. Wittig Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer International Journal of Rotating Machinery Bearing chamber Heat transfer Film thickness Velocity profile Shear driven Gravity. |
| title | Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer |
| title_full | Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer |
| title_fullStr | Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer |
| title_full_unstemmed | Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer |
| title_short | Two-Phase Air/Oil Flow in Aero-Engine Bearing Chambers – Assessment of an Analytical Prediction Method for the Internal Wall Heat Transfer |
| title_sort | two phase air oil flow in aero engine bearing chambers assessment of an analytical prediction method for the internal wall heat transfer |
| topic | Bearing chamber Heat transfer Film thickness Velocity profile Shear driven Gravity. |
| url | http://dx.doi.org/10.1155/S1023621X99000147 |
| work_keys_str_mv | AT aglahn twophaseairoilflowinaeroenginebearingchambersassessmentofananalyticalpredictionmethodfortheinternalwallheattransfer AT swittig twophaseairoilflowinaeroenginebearingchambersassessmentofananalyticalpredictionmethodfortheinternalwallheattransfer |