Numerical Modeling of Unsteady Oil Film Motion Characteristics in Bearing Chambers
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Jingyu Zhao
,
Zhenxia Liu
Abstract
To obtain motion characteristics of the lubricating oil film on the aero-engine bearing chamber wall, a complete mathematical model based on theoretical study to solve three-dimensional unsteady oil film motion was established. On the basis of verifying the rationality of the computational model, the variations of the oil film thickness, velocity and temperature with the rotation speed and lubricating oil flow were analyzed and studied. The numerical results show that the following: In the stable oil film flow state, the oil film thickness shows a decreasing trend with increase in rotation speed and an increasing trend with increase in the lubricating oil flow. Particularly, comparison with the experimental work shows that the proposed numerical model based on theoretical study to solve unsteady oil film motion is a valuable technical means for the study of oil film movement mechanism and the design of actual bearing chamber.
Funding statement: Funding: The work has been supported by the Basic Research Foundation of Northwestern Polytechnical University, contact JC201140, and China Postdoctoral Science Foundation, contact 2011M501480. These financial supports are gratefully acknowledged.
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©2015 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Numerical Modeling of Unsteady Oil Film Motion Characteristics in Bearing Chambers
- Frequency Domain Identification of Multivariable Model for Aero-Engine using an Improved Maximum Likelihood Method
- Compressor Instability Active Control via Closed-Coupled Valve and Throttle Actuators
- Tab Aspect Ratio Effect on Supersonic Jet Mixing
- The Rotating Cavitation Performance of a Centrifugal Pump with a Splitter-Bladed Inducer under Different Rotational Speed
- Global Needs for Jet-Engine-Steered (JES) Strike Drones vs. Lack of Updated Textbooks to Design 6th Generation UCLASS Due to UCAV Failure
- Lightweight Magnesium Bipolar Plates of Direct NaBH4/H2O2 Fuel Cell for AIP Application
- Multidisciplinary Design Exploration for Sounding Launch Vehicle using Hybrid Rocket Engine in View of Ballistic Performance
Artikel in diesem Heft
- Frontmatter
- Numerical Modeling of Unsteady Oil Film Motion Characteristics in Bearing Chambers
- Frequency Domain Identification of Multivariable Model for Aero-Engine using an Improved Maximum Likelihood Method
- Compressor Instability Active Control via Closed-Coupled Valve and Throttle Actuators
- Tab Aspect Ratio Effect on Supersonic Jet Mixing
- The Rotating Cavitation Performance of a Centrifugal Pump with a Splitter-Bladed Inducer under Different Rotational Speed
- Global Needs for Jet-Engine-Steered (JES) Strike Drones vs. Lack of Updated Textbooks to Design 6th Generation UCLASS Due to UCAV Failure
- Lightweight Magnesium Bipolar Plates of Direct NaBH4/H2O2 Fuel Cell for AIP Application
- Multidisciplinary Design Exploration for Sounding Launch Vehicle using Hybrid Rocket Engine in View of Ballistic Performance
