航行气垫船激励均匀水深浮冰层位移响应的数值模拟

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。%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.