摘要
针对传统方法存在数值模拟效果差的问题,提出迎浪时基于非线性运动方程的船舶RANS数值模拟方法。根据非线性运动规则,结合船舶自身的稳定性能,计算航行控制边界稳定限值,利用二阶映射方法,描述一个微分方程映射解,构建非线性运动方程。采用消波方法消除船舶迎浪出口传递过来的波浪,保证非线性运动方程运用的稳定性。选取自适应最优解,对船舶RANS数值进行模拟,并进行迭代处理,获取归一化权重向量,由此获取RANS数值仿真结果。通过实验对比结果可知,该方法最高模拟效果可达90%,可实现对船舶超稳定性控制。
In view of the poor numerical simulation results of traditional methods, a numerical simulation method of ship RANS based on nonlinear equation of motion is presented. According to the nonlinear motion rules and the stability of the ship, the stability limit of the navigation control boundary is calculated. The two order mapping method is used to describe a differential equation mapping solution, and the nonlinear motion equation is constructed. The wave elimination method is adopted to eliminate the waves passing through the outlet of the ship to ensure the stability of the nonlinear equation of motion. The adaptive optimal solution is selected to simulate the RANS value of the ship, and the iterative processing is carried out to obtain the normalized weight vector, and the results of the RANS numerical simulation are obtained. The experimental results show that the maximum simulation effect can reach 90%, and the ship's super stability can be controlled.
出处
《舰船科学技术》
北大核心
2018年第9X期7-9,共3页
Ship Science and Technology
