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论文:2016,Vol:34,Issue(4):627-634 |
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引用本文： |
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方龙, 陈国定. 轴承腔油滴/固体壁面斜碰撞的试验及理论研究[J]. 西北工业大学学报 |
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Fang Long, Chen Guoding. The Experimental and Theoretical Study of Oil Droplet Behaviors after Oblique Collision in Bearing Chamber[J]. Northwestern polytechnical university |
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| 轴承腔油滴/固体壁面斜碰撞的试验及理论研究 |
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| 方龙, 陈国定 |
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| 西北工业大学 机电学院, 陕西 西安 710072 |
| 摘要: |
| 针对先前研究工作的不足，采用VOF（volume of fluid）方法建立了用于油滴/固体壁面斜碰撞分析的三维对称数值模型，并设计制作了相应的试验装置。通过试验研究和数值分析相结合的方式，分析了油滴/固体壁面斜碰撞后沉积油膜在倾斜壁面上沿不同方向的铺展特性，根据大量的数值计算结果建立了沉积油膜最大特征直径与油滴入射工况条件之间的无量纲化函数关系；最后根据能量守恒的原理推导出一个判断油滴/壁面斜碰撞状态的方法，并借助试验结果对文中的判断方法进行了验证，证实了该判断方法的可靠性。文中开展的研究工作为轴承腔中油气两相流动分析提供了基础理论依据，具有较高的学术意义和工程应用价值。 |
| 关键词:
试验
轴承腔
油滴
斜碰撞
铺展特性
特征直径
碰撞状态
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| The Experimental and Theoretical Study of Oil Droplet Behaviors after Oblique Collision in Bearing Chamber |
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| Fang Long, Chen Guoding |
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| School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072 |
| Abstract: |
| Considering the limitations in the present study, a three dimension symmetrical numerical calculation model using Volume of Fluid(VOF)method and an experimental setup about oil droplet/solid surface oblique collision have been built. Combining experimental and numerical methods, the paper studied the oil droplet spreading behaviors in the inclined direction and the depth direction of the solid surface. Then a lot of numerical calculations have been done in a wide range of conditions to establish the functional relationship between the characteristic diameter and collision conditions. Finally, the paper deduced a criterion that would predict the oblique collision outcome between an oil droplet and solid surface from the point of energy conversation. With the experimental data from this paper, the criterion is verified. The research work in this paper provide a neecessity for improvement of the efficiency of aero engines and has high academic value. |
| Key words:
design of experiments
bearing chamber
oil droplet
oblique collision
spreading behaviors characteristic
diameter collision outcome
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| 收稿日期: 2016-03-10
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（51275411）资助 |
| 通讯作者:
Email： |
| 作者简介: 方龙(1988-),西北工业大学博士研究生,主要从事航空发动机润滑系统设计与研究。
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| 方龙 在本刊中的所有文章 |
| 陈国定 在本刊中的所有文章 |
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参考文献: |
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[1] Sikalo S, Tropea C, Ganic E N. Impact of Droplets onto Inclined Surfaces[J]. Journal of Colloid and Interface Science, 2005, 286(2): 661-669
[2] Gupta A, Kumar A. Droplet Impingement and Breakup on a Dry Surface[J]. Computers & Fluids, 2010, 39(9): 1696-1703
[3] 李大树,仇性启,于磊,郑志伟. 液滴碰撞水平壁面实验研究[J]. 实验技术与管理, 2015(4): 66-71 Li Dashu, Qiu Xingqi, Yu Lei, Zheng Zhiwei. Research on Experiments of Droplet Impacting on a Flat Surface[J]. Experimental Technology and Management, 2015(4): 66-71 (in Chinese)
[4] Zhang Yanjun, Ping Li. Spreading Simulation of Droplet Impact on Solid Surface with CLSVOF Method and Its Experimental Verification[J]. Brazilian Journal of Physics, 2016, 46(2): 220-224
[5] Diaz Andres J, Alfonso Ortega. Gas-Assisted Droplet Impact on a Solid Surface[J]. Journal of Fluids Engineering, 2016, 138(8): 081104
[6] Rahul R, Konstantin S, Michael N. Dynamics of Droplet Impact on Hydrophobic/Icephobic Concrete with the Potential for Superhydrophobicity[J]. Langmuir, 2015, 31: 1437-1444
[7] 刘登,陈国定,方龙,孙恒超. 运动油滴/固体壁面斜碰撞的状态辨识及特征分析[J]. 航空学报, 2015(4): 1359-1366 Liu Deng, Chen Guoding, Fang Long, Sun Hengchao. State Identification and Characteristics Analysis of Oil Droplet Oblique Impact Onto Solid Wall[J]. Acta Aeronautica et Astronautica Sinica, 2015(4): 1359-1366 (in Chinese)
[8] Damon G K Aboud, Anne-Marie Kietzig. Splashing Threshold of Oblique Droplet Impacts on Surfaces of Various Wettability[J]. Langmuir, 2015, 31(36): 10100-10111
[9] Hirt C W, Nichols B D. Volume of Fluid(VOF) Method for the Dynamics of Free Boundaries[J]. Journal of Computational Physics, 1981, 39: 201-225
[10] Brackbill J U, Kothe D B, Zemach C. A Continuum Method for Modeling Surface-Tension[J]. Journal of Computational Physics, 1992, 100: 335-354
[11] Pasandideh-Fard M, Qiao M, Chandra S, Mostaghimi J. Capillary Effects during Droplet Impact on a Solid Surface[J]. Physics of Fluids, 1996, 8: 650-659
[12] Hitoshi F, Yu S. Three-Dimensional Numerical Analysis of the Deformation Behavior of Droplets Impinging onto a Solid Substrate[J]. International Journal of Multiphase Flow, 2007, 33(3): 317-332
[13] Farrall M, Hibberd S, Simmons K. The Effect of Initial Injection Conditions on the Oil Droplet Motion in a Simplified Bearing Chamber[J]. Journal of Engineering for Gas Turbines and Power, 2008, 130(1): 1-8
[14] Fang L, Chen G D, Liu D. A Determination Criterion for Predicting the Outcome of Oblique Collision between an oil Droplet and Solid Surface[J]. J Mechanical Engineering Science, 2016, 230: 1-9
[15] Chandra S, Avedisian C T. On the Collision of a Droplet with a Solid Surface[J]. Proceedings of The Royal Society A, 1991, 432: 13-14 |
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