Numerically Simulating Pressure Field of Oil Film in a New Hybrid Rotary Table
-
摘要: 以新型螺旋油楔动静压转台为研究对象，采用基于Navier-Stokes方程的CFD（Computational fluid dynamics）软件模拟转台内部润滑油的压力场分布，分析不同转速和油膜厚度对转台内部压力场分布的影响，并进行了实验验证。分析结果表明，在同一供油压力下，油膜厚度较转速对静压油膜压力的影响更为明显；而油膜厚度和转速都会对动压压力峰值造成显著影响；油膜厚度一定且转速较高时，动压压力峰值明显高于静压腔内压力。CFD仿真结果与实验测试结果基本吻合，从而证实了仿真结果的可靠性及分析方法的可行性。Abstract: The paper studies a new hybrid rotary table with spiral oil wedge. The influence of different rotational speed and thickness of oil film on the pressure field distribution is simulated with the commercial CFD software based on the Navier-Stokes equation. The simulation results show that the oil film thickness has a more significant influence on the hydrostatic pressure than the rotational speed when the pressure applied is the same, while the oil film thickness and rotational speed both obviously affect the hydrodynamic pressure. The hydrodynamic pressure peak is higher than the hydrostatic pressure recess when the oil film thickness is the same and the rotational speed is higher. Experiments are carried out to measure the oil film pressure, and the experimental results show a good agreement with the simulation results, verifying the effectiveness of the numerical simulation.
-
Key words:
- hybrid rotary table /
- spiral oil wedge /
- pressure field /
- computational fluid dynamics
-
[1] Hirano T, Guo Z L, Kirk R G. Application of computational fluid dynamics analysis for rotating machinery-part Ⅱ:labyrinth seal analysis[J]. Journal of Engineering for Gas Turbines and Power, 2005, 127(4):820-826 doi: 10.1115/1.1808426 [2] Kozdera M, Drbáková S. Numerical modelling of the flow in the annular multi-recess hydrostatic thrust bearing using CFD methods[J]. EPJ Web of Conferences, 2013, 45:01051 doi: 10.1051/epjconf/20134501051 [3] 于天彪, 王学智, 关鹏, 等.基于FLUENT的液体动静压轴承的动态特性分析[J].润滑与密封, 2012, 37(6):1-5 doi: 10.3969/j.issn.0254-0150.2012.06.001Yu T B, Wang X Z, Guan P, et al. Dynamic characteristics analysis on liquid hybrid bearing based on FLUENT[J]. Lubrication Engineering, 2012, 37(6):1-5(in Chinese) doi: 10.3969/j.issn.0254-0150.2012.06.001 [4] Shao J P, Dai C X, Zhang Y Q, et al. The effect of oil cavity depth on temperature field in heavy hydrostatic thrust bearing[J]. Journal of Hydrodynamics, 2011, 23(5):676-680 doi: 10.1016/S1001-6058(10)60164-3 [5] 张艳芹, 陈瑶, 范立国, 等.四种油腔形状重型静压轴承承载性能理论分析[J].哈尔滨理工大学学报, 2013, 18(2):68-71 doi: 10.3969/j.issn.1007-2683.2013.02.013Zhang Y Q, Chen Y, Fan L G, et al. Theoretical analysis of bearing performance of four shapes of recess in heavy hydrostatic bearing[J]. Journal of Harbin University of Science and Technology, 2013, 18(2):68-71(in Chinese) doi: 10.3969/j.issn.1007-2683.2013.02.013 [6] 邵俊鹏, 张艳芹, 李鹏程.基于FLUENT的静压轴承椭圆腔和扇形腔静止状态流场仿真[J].润滑与密封, 2007, 32(1):93-95 doi: 10.3969/j.issn.0254-0150.2007.01.028Shao J P, Zhang Y Q, Li P C. Static flow simulation of hydrostatic bearing ellipse and sector curve based on FLUENT[J]. Lubrication Engineering, 2007, 32(1):93-95(in Chinese) doi: 10.3969/j.issn.0254-0150.2007.01.028 [7] 张艳芹, 张志全, 冯雅楠, 等.双矩形腔静压滑动轴承高速时的油膜润滑特性[J].摩擦学学报, 2018, 38(5):609-618 http://d.old.wanfangdata.com.cn/Periodical/mcxxb201805015Zhang Y Q, Zhang Z Q, Feng Y N, et al. Lubrication characteristics of double rectangular cavity hydrostatic bearing at high speed[J]. Tribology, 2018, 38(5):609-618(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/mcxxb201805015 [8] 王少力, 熊万里, 孟曙光, 等.离心力对恒流供油扇形静压推力轴承承载力的影响分析[J].机械强度, 2014, 36(5):716-722 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jxqd201405012Wang S L, Xiong W L, Meng S G, et al. Influence of centrifugal force on bearing capacity of the fan-shaped hydrostatic thrust bearing supplied with constant oil flow[J]. Journal of Mechanical Strength, 2014, 36(5):716-722(in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jxqd201405012 [9] 王少力, 熊万里, 桂林, 等.偏载液体静压转台旋转工况下承载力及倾覆力矩动网格计算方法[J].机械工程学报, 2014, 50(23):66-74 http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201423011Wang S L, Xiong W L, Gui L, et al. Dynamic mesh method for calculating bearing capacity and overturning moment of partial loaded hydrostatic rotary tables under rotating condition[J]. Journal of Mechanical Engineering, 2014, 50(23):66-74(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/jxgcxb201423011 [10] 孟晶, 戴惠良, 方波, 等.基于FLUENT的液体动静压轴承油膜特性的分析[J].液压与气动, 2012(8):17-21 doi: 10.3969/j.issn.1000-4858.2012.08.006Meng J, Dai H L, Fang B, et al. Analysis on oil film properties of hybrid bearing based on FLUENT[J]. Chinese Hydraulics & Pneumatics, 2012(8):17-21(in Chinese) doi: 10.3969/j.issn.1000-4858.2012.08.006 [11] 张耀满, 于德光, 杨清波.深浅腔动静压轴承油膜特性[J].东北大学学报, 2018, 39(10):1490-1494 doi: 10.12068/j.issn.1005-3026.2018.10.024Zhang Y M, Yu D G, Yang Q B. Oil film characteristics of deep-shallow pocket hybrid bearing[J]. Journal of Northeastern University, 2018, 39(10):1490-1494(in Chinese) doi: 10.12068/j.issn.1005-3026.2018.10.024 [12] 许尚贤.液体静压和动静压轴承综述[J].磨床与磨削, 1985(4):30-35Xu S X. Review on hydrostatic and hydrostatic bearings[J]. Grinder & Grinding, 1985(4):30-35(in Chinese) [13] 周堃, 熊万里, 吕浪, 等.液体静压转台技术综述[J].制造技术与机床, 2011(4):22-25, 29 doi: 10.3969/j.issn.1005-2402.2011.04.009Zhou K, Xiong W L, Lü L, et al. Review on key technology of hydrostatic rotary table[J]. Manufacturing Technology & Machine Tool, 2011(4):22-25, 29(in Chinese) doi: 10.3969/j.issn.1005-2402.2011.04.009 [14] 路长厚.一种大型精密差速动静压转台: 中国, 201020615122.9[P]. 2011-06-15Lu C H. Large-scale precision differential dynamic and static pressure rotary table: CN, 201020615122.9[P]. 2011-06-15(in Chinese) [15] 王福军.计算流体动力学分析-CFD软件原理与应用[M].北京:清华大学出版社, 2004Wang F J. Computational fluid dynamics-principle and application of CFD software[M]. Beijing:Tsinghua University Press, 2004(in Chinese) [16] Muijderman E A. Spiral groove bearings[M]. Eindhoven:Philips Technical Library, 1966:39-40 -
下载:
点击查看大图
图(9)
计量
- 文章访问数: 561
- HTML全文浏览量: 302
- PDF下载量: 86
- 被引次数: 0
