Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine
The unsteady motion behavior of oil/gas two-phase flow in a novel ventless bearing chamber has significant impacts on the lubrication and heat transfer efficiency of bearings due to the various advantages of lower pressure levels and weaker rotating airflow effects. In this paper, the unsteady motio...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
|
| Series: | Aerospace |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2226-4310/9/4/211 |
| _version_ | 1827622252663799808 |
|---|---|
| author | Shaobai Li Caixia Li Wei Wang |
| author_facet | Shaobai Li Caixia Li Wei Wang |
| author_sort | Shaobai Li |
| collection | DOAJ |
| description | The unsteady motion behavior of oil/gas two-phase flow in a novel ventless bearing chamber has significant impacts on the lubrication and heat transfer efficiency of bearings due to the various advantages of lower pressure levels and weaker rotating airflow effects. In this paper, the unsteady motion behavior of oil/gas two-phase flow in a ventless aero-engine bearing chamber is investigated by three-dimensional numerical simulation through the volume of fluid (VOF) method, and the numerical method is verified using published experimental data. The flow characteristics of oil/gas two-phase in the secondary flow and three-dimensional flow are investigated. The results show the evolution of vortices and the transition of the driving mode in the unsteady motion of oil/gas two-phase flow, and a criterion for the shift of the driving mode at different rotor speeds is proposed. As the rotation speed increases, the variation trend of the velocity field and pressure field of oil/gas two-phase flow is consistent, and the accumulation region of oil becomes inconspicuous. The results indicate a reference for enhancing the performance of lubrication systems for aero-engines. |
| first_indexed | 2024-03-09T11:18:54Z |
| format | Article |
| id | doaj.art-2779026d2a314584b5d812bd0cc410e0 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T11:18:54Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-2779026d2a314584b5d812bd0cc410e02023-12-01T00:22:19ZengMDPI AGAerospace2226-43102022-04-019421110.3390/aerospace9040211Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-EngineShaobai Li0Caixia Li1Wei Wang2College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, ChinaCivil Aviation College, Shenyang Aerospace University, Shenyang 110136, ChinaThe unsteady motion behavior of oil/gas two-phase flow in a novel ventless bearing chamber has significant impacts on the lubrication and heat transfer efficiency of bearings due to the various advantages of lower pressure levels and weaker rotating airflow effects. In this paper, the unsteady motion behavior of oil/gas two-phase flow in a ventless aero-engine bearing chamber is investigated by three-dimensional numerical simulation through the volume of fluid (VOF) method, and the numerical method is verified using published experimental data. The flow characteristics of oil/gas two-phase in the secondary flow and three-dimensional flow are investigated. The results show the evolution of vortices and the transition of the driving mode in the unsteady motion of oil/gas two-phase flow, and a criterion for the shift of the driving mode at different rotor speeds is proposed. As the rotation speed increases, the variation trend of the velocity field and pressure field of oil/gas two-phase flow is consistent, and the accumulation region of oil becomes inconspicuous. The results indicate a reference for enhancing the performance of lubrication systems for aero-engines.https://www.mdpi.com/2226-4310/9/4/211ventless bearing chamberoil/gas two-phase flowflow characteristicsunsteady flowsthree-dimensional numerical analysis |
| spellingShingle | Shaobai Li Caixia Li Wei Wang Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine Aerospace ventless bearing chamber oil/gas two-phase flow flow characteristics unsteady flows three-dimensional numerical analysis |
| title | Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine |
| title_full | Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine |
| title_fullStr | Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine |
| title_full_unstemmed | Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine |
| title_short | Simulation of Unsteady Flows of Oil/Gas in the Ventless Bearing Chamber of an Aero-Engine |
| title_sort | simulation of unsteady flows of oil gas in the ventless bearing chamber of an aero engine |
| topic | ventless bearing chamber oil/gas two-phase flow flow characteristics unsteady flows three-dimensional numerical analysis |
| url | https://www.mdpi.com/2226-4310/9/4/211 |
| work_keys_str_mv | AT shaobaili simulationofunsteadyflowsofoilgasintheventlessbearingchamberofanaeroengine AT caixiali simulationofunsteadyflowsofoilgasintheventlessbearingchamberofanaeroengine AT weiwang simulationofunsteadyflowsofoilgasintheventlessbearingchamberofanaeroengine |