| 野渡无人舟自横现象的数值研究 |
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| 引用本文： | 余勇飞, 陈沉, 斯铁冬, 胡婷, 魏家望. 野渡无人舟自横现象的数值研究[J]. 力学与实践, 2020, 42(5): 576-579. doi: 10.6052/1000-0879-20-108 |
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| 作者姓名： | 余勇飞 陈沉 斯铁冬 胡婷 魏家望 |
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| 作者单位： | 中国电建集团华东勘测设计研究院有限公司,杭州 311100; 浙江华东工程数字技术有限公司,杭州 311100 |
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| 摘 要： | 为了研究``野渡无人舟自横'这一自然现象,本文采用数值仿真技术模拟研究了小船在水流作用下的运动特性,得出：顺于水流以及横于水流都属于小船平衡位置。但顺于水流属于非稳定平衡位置,受扰动后将失去平衡,并再也恢复不到原平衡位置;而横于水流属于稳定平衡位置,此时即使小船受到扰动失去平衡,最终也能在自身力矩作用下重新恢复到原平衡位置。
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| 关 键 词： | 稳定平衡 非稳定平衡 数值模拟 力学现象 |
| 收稿时间： | 2020-03-20 |
| 修稿时间： | 2020-04-15 |
NUMERICAL STUDY OF THE PHENOMENON THAT A FERRY BOAT DRIFTS ATHWART AT THE DESERTED CROSSING |
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| YU Yongfei, CHEN Chen, SI Tiedong, HU Ting, WEI Jiawang. NUMERICAL STUDY OF THE PHENOMENON THAT A FERRY BOAT DRIFTS ATHWART AT THE DESERTED CROSSING[J]. Mechanics in Engineering, 2020, 42(5): 576-579. doi: 10.6052/1000-0879-20-108 |
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| Authors: | YU Yongfei CHEN Chen SI Tiedong HU Ting WEI Jiawang |
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| Affiliation: | Power China Huadong Engineering Co., Ltd, Hangzhou, 311100, China; Zhejiang Huadong Engineering Digital Technology Co.,Ltd, Hangzhou 311100, China |
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| Abstract: | In order to study the phenomenon that a ferry boat drifts athwart at the deserted crossing, a numerical simulation is carried out for the motion of a boat under the water flow action. Conclusions are as follows: The boat can keep a balance both along and across the water. But it is an unstable balance along the water, it will be lost because of an external disturbance, and the boat can not restore to its homing position again. While the boat is in a stable balance across the water, it can restore to the homing position again even if the boat loses the balance under an external disturbance. |
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| Keywords: | stable balance unstable balance numerical simulation mechanics phenomenon |
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