| 竖直楔形流道的单气泡上升过程的实验研究 |
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| 引用本文： | 张一夫,倪景峰,李维仲.竖直楔形流道的单气泡上升过程的实验研究[J].气动实验与测量控制,2013(4):50-56. |
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| 作者姓名： | 张一夫 倪景峰 李维仲 |
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| 作者单位： | [1]辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛125105 [2]大连理工大学能源与动力学院,辽宁大连116023 |
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| 基金项目： | 国家自然科学基金（51274116） |
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| 摘 要： | 通过实验对竖直楔形流道内单气泡上升过程的行为特性进行了研究。利用高速摄影设备和计算机图像处理技术准确地追踪了气泡上升过程中运动轨迹和形态的变化。通过对气泡上升过程中旋转角、瞬时速度、瞬时加速度等参数的分析,找到了楔形流道内气泡上升过程的运动规律,并且通过推导获得了气泡上升过程中拽力系数的计算公式。
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| 关 键 词： | 单气泡 楔形流道 计算机图像处理技术 拽力系数 |
Experimental study on a single bubble rising in a vertical wedge-shaped channel |
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| Authors: | ZHANG Yi-fu NI Jing-feng LI Wei-zhong |
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| Institution: | 1.College of Safety Science and Engineering,Liaoning Technical University,Huludao Liaoning 125105,China;2.School of Energy and Power Engineering,Dalian University of Technology,Dalian Liaoning 116023,China) |
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| Abstract: | An experiment has been made to study the behavior of a single bubble rising in a vertical wedge-shaped channel.By means of a high speed digital camera and computer image processing technology（CIPT）,the bubble’s deformation and trajectory in the channel is recorded accurately.Through analyzing the regulation of rotation angle,instantaneous velocity and instantaneous acceleration of bubble during bubble’s rising process,the characteristics of bubble motion are analyzed in details and the calculating formula of drag coefficient is deduced. |
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| Keywords: | single bubble wedge-shaped channel computer image processing technology drag coefficient |
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