首页> 外文OA文献 >Maneuverability of Ships with Small Draught in Steady Wind
【2h】

Maneuverability of Ships with Small Draught in Steady Wind

机译:小风速航行船舶的操纵性

摘要

Wind force and moment may force a ship to drastically decrease its speed and use a large drift angle as well as a large rudder angle in order to maintain its course. Ships with a small draught might have more risk in maneuvering to its point of view compared with a ship with a larger draught. This paper discusses maneuverability of a ship with a small draught in steady wind. The effect of wind on ship speed, drift angle, and rudder angle are investigated in a steady state condition. Five different ratios of wind velocity to ship speed from 1.0 to 20.0 are used in the simulation. The variation in wind direction is examined from 0?? to 180??. Results of the numerical simulation show that the wind has a significant effect on the reduction in ship speed with a wind direction less than 100??. The drift angle increases due to increasing wind velocity in the same wind direction. Wind direction also has a significant effect on the drift angle especially when the wind direction is less than 140??. The same phenomenon was found for the rudder angle. The necessary rudder angle is greater than the maximum rudder angle of the ship when the wind direction is 60?? with a wind velocity to ship speed ratio of 20 or more.
机译:风力和力矩可能会迫使船舶急剧降低其速度,并使用较大的漂移角和较大的舵角来维持其航向。与吃水较大的船舶相比,吃水小的船舶可能会有更大的操纵风险。本文讨论了在恒定风速下具有小吃水深度的船舶的可操纵性。在稳态条件下,研究了风对船速,漂移角和舵角的影响。在仿真中使用了五种不同的风速与船速比,从1.0到20.0。检查风向的变化,从0?至180 ??。数值模拟结果表明,风向对风速小于100Ω的船速降低有重大影响。由于相同风向的风速增加,漂移角增加。风向对漂移角也有很大的影响,特别是当风向小于140。对于舵角也发现了相同的现象。当风向为60°时,必要的舵角大于船舶的最大舵角。风速与船速比为20或更高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号