| 利用光学方法对液体表面张力的非接触式测量 |
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| 引用本文： | 董军. 利用光学方法对液体表面张力的非接触式测量[J]. 西安邮电学院学报, 2008, 13(1): 141-143 |
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| 作者姓名： | 董军 |
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| 作者单位： | 西安邮电学院,电子与信息工程系,陕西,西安,710121 |
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| 基金项目： | 西安邮电学院中青年科研基金项目(101-0424) |
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| 摘 要： | 实验上对频率为几百赫兹的低频液体表面波进行了研究,得到了清晰稳定的衍射条纹。理论上对这一现象进行了分析,得出了衍射条纹角宽度与表面波波长之间的解析关系式。根据流体力学中的色散关系可知,利用实验测量所得的表面波波长,可以得到液体表面张力。因此,本文建立了一种用来实时、无损测量液体表面张力的方法。
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| 关 键 词： | 液体表面波 色散关系 表面张力 |
| 文章编号： | 1007-3264（2008）01-0141-03 |
| 收稿时间： | 2007-05-08 |
| 修稿时间： | 2007-05-08 |
Nondestructive measurement of the liquid surface tension by means of optical method |
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| DONG Jun. Nondestructive measurement of the liquid surface tension by means of optical method[J]. Journal of Xi'an Institute of Posts and Telecommunications, 2008, 13(1): 141-143 |
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| Authors: | DONG Jun |
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| Affiliation: | BONG Jun (Department of Electronic and Information Engineering, Xi＇an University of Post and Telecommunications, Xi＇an 710121, China) |
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| Abstract: | Light diffraction from liquid surface waves at low-frequency was experimentally realized.In the experiment,steady and visible diffraction patterns were obtained.Theoretically analyzed the diffraction patterns.The corresponding analytic expression of the angle width of diffraction patterns was derived.According to the dispersion relation of the fluid mechanics,the liquid surface tension was obtained based on the wavelength of the LSW.Therefore,a real time,nondestructive method which was applied to measure the liquid surface tension was developed in this paper. |
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| Keywords: | liquid surface wave dispersion relation surface tension |
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