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.
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.
 Citation: 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.

## NUMERICAL STUDY OF THE PHENOMENON THAT A FERRY BOAT DRIFTS ATHWART AT THE DESERTED CROSSING

• 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。

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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