航行气垫船激励均匀水深浮冰层位移响应的数值模拟 |
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引用本文: | 丁志勇,李宇辰,张志宏,卢再华.航行气垫船激励均匀水深浮冰层位移响应的数值模拟[J].舰船科学技术,2016(10):20-24. |
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作者姓名: | 丁志勇 李宇辰 张志宏 卢再华 |
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作者单位: | 海军工程大学理学院,湖北武汉,430033 |
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基金项目: | 国家自然科学基金资助项目(51479202) |
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摘 要: | 在均匀水深条件下,基于 ALE算法对匀速航行气垫船激励浮冰层的位移响应问题进行数值模拟。计算不同气垫船速度和河道岸壁宽度条件下的冰层位移响应,获得对应于冰层最大垂向位移变形情况下的气垫船临界速度。计算结果与理论解和试验结果符合良好,验证计算方法的有效性。计算结果表明:在临界速度时冰层下陷位移达到最大,而河道岸壁的存在将会使临界速度减小。
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关 键 词: | 气垫船 冰层 数值模拟 临界速度 |
Numerical simulation of displacement response of floating ice sheet induced by a moving air cushion vehicle in uniform depth |
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Abstract: | Based on the ALE algorithm in uniform depth, the displacement response of floating ice sheet caused by a moving air cushion vehicle (ACV) was numerically simulated, the critical speed of moving load with maximum verticaldis-placement deformation of ice sheet were solved, the influence of river width on the displacement response and critical speed were analyzed. A good agreement exists among the numerical results and theoretical solutions as well as experimentalres-ults. The research shows that maximum depression deformation of ice sheet will appear at critical speed, and the existence of river bank will decrease the value of critical speed. |
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Keywords: | air cushion vehicle ice sheet numerical simulation critical speed |
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