發(fā)布時間：2018-05-28 23:25

  本文選題：海洋工程 + 振源結(jié)構(gòu)　； 參考：《石油勘探與開發(fā)》2016年05期

【摘要】：實驗中發(fā)現(xiàn)三棱柱體在流體表面作低頻小幅簡諧振動時激發(fā)的表面波對漂浮物有定向吸引作用,針對此現(xiàn)象進行了系統(tǒng)實驗和深入研究,分析了不同結(jié)構(gòu)振源振動引起的流體表面波動的特性。開展了三棱柱體、四棱柱體、六棱柱體和圓柱體作為振源的實驗。結(jié)果表明正對棱柱體棱邊方向的表面波對漂浮物有吸引作用,而正對棱柱體柱面方向的表面波對漂浮物有排斥作用。吸引作用的大小與棱角的尖銳程度呈非線性關(guān)系,棱角越尖銳吸引作用越強。當(dāng)振源為圓柱體即棱角消失時,表面波對漂浮物沒有定向吸引作用。實驗發(fā)現(xiàn)并驗證了特定結(jié)構(gòu)振源振動時產(chǎn)生的流體表面波具有定向吸引作用,研究成果可為水面污染物清理、海上溢油收集等工程應(yīng)用問題提供幫助。
[Abstract]:It is found in the experiment that the surface wave excited by the triangulated cylinder acting on the surface of the fluid with low frequency and small harmonic vibration has a directional attraction to the floating object. In view of this phenomenon, a systematic experiment and a thorough study have been carried out. The characteristics of fluid surface fluctuation caused by vibration of different structures are analyzed. The experiment of triangulated cylinder, four-prism cylinder, hexagonal cylinder and cylinder as vibration source was carried out. The results show that the surface waves in the prism edge direction attract the floating object, while the surface wave in the prism cylinder direction repels the floating object. The magnitude of the attraction is nonlinear to the sharp degree of the angle, and the sharper the angle is, the stronger the attraction is. When the vibration source is a cylinder, the surface wave has no directional attraction to the floating object. The experimental results show that the fluid surface waves produced by the vibration source of a specific structure have directional attraction, and the research results can be helpful for engineering applications such as surface pollutant cleaning and oil spill collection at sea.
【作者單位】： 北京信息科技大學(xué)理學(xué)院;中國石油大學(xué)(北京)國家安全生產(chǎn)監(jiān)督管理總局油氣安全工程技術(shù)研究中心;中國科學(xué)研究院力學(xué)所;
【基金】：國家科技重大專項(2011ZX05027-005-001)
【分類號】：O352

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