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Mazen Abualtayef Masamitsu Kuroiwa Kentarou Tanaka Yuhei Matsubara Junichi Nakahira 《Journal of Marine Science and Technology》2008,13(1):40-49
This article describes the development of a three-dimensional (3D) multilayer hydrostatic model of tidal motions in the Ariake
Sea and its application. The governing equations were derived from 3D Navier-Stokes equations and were solved using the fractional
step method, which combines the finite difference method in the horizontal plane and the finite element method in the vertical
plane. This study introduced a 3D, time-dependent, hydrostatic, tidal current model that can compute wetting and drying in
tidal flats due to tidal motion. The 3D model was first tested against analytical solutions for three standard cases in a
rectangular basin in order to investigate the performance of the model. Then, the model was applied to Saigo fishery port
and the Ariake Sea. For standard cases, the numerical solutions were almost identical to the analytical solutions. Finally,
the model results for Saigo port and the Ariake Sea show good agreement with the field observations. 相似文献
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Newmark算法是求解结构动力学问题的主要方法之一,其精确度取决于时间步长h和最短固有周期T的比值h/Tmin[1],对于已知最短固有周期T的系统,其精确度只与时间步长h有关。当Newmark算法的积分参数gama为1/2、beta为1/4时被称为平均加速度法[2],本文主要分析了平均加速度法与simulink中runge—kutta45算法的相对误差及绝对误差,验证了平均加速度法在步长为0.001时,可以达到所做项目的精度要求,本项目要求精度为千分之三。 相似文献
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