| 垂直螺旋管道内单颗粒悬浮运动的试验 |
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| 引用本文： | 张志雁,牧振伟,杨力行.垂直螺旋管道内单颗粒悬浮运动的试验[J].水利水电科技进展,2011,31(4):56-59. |
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| 作者姓名： | 张志雁 牧振伟 杨力行 |
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| 作者单位： | 新疆农业大学水利与土木工程学院; |
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| 基金项目： | 国家自然科学基金(1076200) |
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| 摘 要： | 采用高速摄影方法拍摄记录垂直矩形螺旋管道内单颗粒的悬浮运动,采用捕捉试验中颗粒运动轨迹的方法,获得其运动参数,并分析颗粒受力的规律。试验结果表明:旋转水流的角速度对颗粒运动有较大的影响;颗粒在运动过程中主要是受有效重力、阻力和旋转科氏力的作用;在一定条件下,颗粒所受的旋转科氏力与离心力满足抛物线的关系,旋转科氏力比离心力大2～3个数量级;在小尺度低速度旋转流中,颗粒所受的旋转科氏力所占比例较大,在受力分析中不应被忽略。
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| 关 键 词： | 螺旋管道 旋转流 单颗粒 旋转科氏力 离心力 |
| 修稿时间： | 2011/9/6 0:00:00 |
Experimental study on suspended motion of a single particle in vertical spiral duct |
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| ZHANG Zhi-yan,MU Zhen-wei,YANG Li-xing.Experimental study on suspended motion of a single particle in vertical spiral duct[J].Advances in Science and Technology of Water Resources,2011,31(4):56-59. |
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| Authors: | ZHANG Zhi-yan MU Zhen-wei YANG Li-xing |
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| Institution: | ZHANG Zhi-yan,MU Zhen-wei,YANG Li-xing(College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China) |
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| Abstract: | The suspended motion of a single particle in a vertical spiral duct was recorded by means of the high-speed camera.The motion parameters of the particle were obtained by capturing its motion loci,and the forces acting upon it were analyzed.The results indicate that the angular velocity of rotational flows has great influence on the motion of the single particle.The whole motion of the is mainly affected by the effective gravity,drag and rotational Coriolis force.Under some conditions,there is a parabolic re... |
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| Keywords: | spiral duct rotational flow single particle rotational Coriolis force centrifugal force |
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