东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (2): 285-287.DOI: -

• 论著 • 上一篇    下一篇

油雾喷射碰壁过程中油膜形成的数值模拟分析

张志伟;王长周;宋锦春;陈建文;   

  1. 东北大学机械工程与自动化学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50875040)

Numerical simulation analysis of formation of fluid film in the process of oil mist spraying against the metal plate

Zhang, Zhi-Wei (1); Wang, Chang-Zhou (1); Song, Jin-Chun (1); Chen, Jian-Wen (1)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Chen, J.-W.
  • About author:-
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摘要： 利用FLUENT仿真软件对油雾喷射碰壁过程中油膜的形成进行数值模拟;模拟条件如下:喷射速度v分别为30,80,100和120 m/s;油雾颗粒粒径d分别为3,5,7和10μm;喷雾距离D为50和65 mm.在上述条件下得到油膜厚度等高图,从而得出喷射速度、油雾颗粒粒径、喷雾距离对油膜厚度和油膜比率的影响.模拟结果表明:喷雾距离增加时油膜厚度和油膜比率都减少;在喷雾距离为50 mm时,速度为80 m/s的油膜厚度和油膜比率比较理想;同样条件下,油雾颗粒粒径在5μm左右时,油膜厚度和油膜比率较大.

关键词: 油膜, 油雾润滑, 凝缩嘴, 喷射速度, 喷雾距离, 油膜厚度, 油膜比率

Abstract: The factors which affect the oil film formation when the oil mist is spraying against the metal plate were studied via a numerical simulation with the software FLUENT, then the contour maps of oil film thickness were plotted. In the simulation the spray speeds were 30, 80, 100 and 120 m/s; the oil drop sizes were 3, 5, 7 and 10 μm; and the spraying distances were 50 and 65 mm. The results showed that the oil film thickness and film forming ratio both decrease with increasing spraying distance, and both are comparatively perfect when the spraying distance is 50 mm with the spray speed 80 m/s. Meanwhile, both become bigger when the oil drop size is about 5 μm.

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