Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage
Abstract As the rotating speed of aviation gears becomes higher and higher, the influence of windage resistance on jet streamline must be considered in lubrication system design. To provide theoretical guidance for nozzle layout, an analytical model to calculate the windage impingement depth of gear...
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| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-01145-5 |
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| author | Linlin Li Yuanjun Ye Yuzhong Zhang Kai Zhao |
| author_facet | Linlin Li Yuanjun Ye Yuzhong Zhang Kai Zhao |
| author_sort | Linlin Li |
| collection | DOAJ |
| description | Abstract As the rotating speed of aviation gears becomes higher and higher, the influence of windage resistance on jet streamline must be considered in lubrication system design. To provide theoretical guidance for nozzle layout, an analytical model to calculate the windage impingement depth of gears is proposed. To obtain the best oil jet lubrication effect, the multi-objective optimization design method of oil jet streamline layout parameters with the largest impingement depth and the smallest impingement depth difference between two gears was proposed. CFD simulation analysis of flow field around gears are conducted to study the influence of jet nozzle layout parameters on the oil distribution and oil pressure. The results show that: the modulus and transmission ratio mainly affect the value range of oil jet streamline offset, and the correlation is positive. With the increase of inclination angle and initial offset, the impingement depth of the two gears is negatively correlated. The optimized oil jet streamline layout parameters of the case in the article are S = 0.53 mm, β = 4.6°, and the impingement depth difference between the two wheels of the gear pair after optimization is reduced by more than 50.3%. Calculation results are consistent with CFD, which validates the effectiveness and accuracy of the model. This research provides a design theory and method for the selection of oil lubrication parameters for aviation high-speed and heavy-load aviation gears. |
| format | Article |
| id | doaj-art-860c7ee7326a4cfd871e6a743e6f3fce |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-860c7ee7326a4cfd871e6a743e6f3fce2025-08-20T03:53:58ZengNature PortfolioScientific Reports2045-23222025-05-0115111910.1038/s41598-025-01145-5Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windageLinlin Li0Yuanjun Ye1Yuzhong Zhang2Kai Zhao3Xi’an Aeronautical Polytechnic InstituteNorthwestern Polytechnical UniversityXi’an Aeronautical Polytechnic InstituteXi’an Aeronautical Polytechnic InstituteAbstract As the rotating speed of aviation gears becomes higher and higher, the influence of windage resistance on jet streamline must be considered in lubrication system design. To provide theoretical guidance for nozzle layout, an analytical model to calculate the windage impingement depth of gears is proposed. To obtain the best oil jet lubrication effect, the multi-objective optimization design method of oil jet streamline layout parameters with the largest impingement depth and the smallest impingement depth difference between two gears was proposed. CFD simulation analysis of flow field around gears are conducted to study the influence of jet nozzle layout parameters on the oil distribution and oil pressure. The results show that: the modulus and transmission ratio mainly affect the value range of oil jet streamline offset, and the correlation is positive. With the increase of inclination angle and initial offset, the impingement depth of the two gears is negatively correlated. The optimized oil jet streamline layout parameters of the case in the article are S = 0.53 mm, β = 4.6°, and the impingement depth difference between the two wheels of the gear pair after optimization is reduced by more than 50.3%. Calculation results are consistent with CFD, which validates the effectiveness and accuracy of the model. This research provides a design theory and method for the selection of oil lubrication parameters for aviation high-speed and heavy-load aviation gears.https://doi.org/10.1038/s41598-025-01145-5Aviation gearOil jet lubricationAnalysis modelWindage impingement depthMulti-objective optimization |
| spellingShingle | Linlin Li Yuanjun Ye Yuzhong Zhang Kai Zhao Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage Scientific Reports Aviation gear Oil jet lubrication Analysis model Windage impingement depth Multi-objective optimization |
| title | Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| title_full | Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| title_fullStr | Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| title_full_unstemmed | Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| title_short | Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| title_sort | calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage |
| topic | Aviation gear Oil jet lubrication Analysis model Windage impingement depth Multi-objective optimization |
| url | https://doi.org/10.1038/s41598-025-01145-5 |
| work_keys_str_mv | AT linlinli calculationmethodofimpingementdepthandmultipleobjectiveoptimizationsofnozzlelayoutforaviationgearsconsideringwindage AT yuanjunye calculationmethodofimpingementdepthandmultipleobjectiveoptimizationsofnozzlelayoutforaviationgearsconsideringwindage AT yuzhongzhang calculationmethodofimpingementdepthandmultipleobjectiveoptimizationsofnozzlelayoutforaviationgearsconsideringwindage AT kaizhao calculationmethodofimpingementdepthandmultipleobjectiveoptimizationsofnozzlelayoutforaviationgearsconsideringwindage |