船舶浅水航行下沉量数值计算

Numerical calculation of ship squat in shallow water

为求解船舶航行中的下沉量,采用NURBS技术对船体进行曲面重构,并应用基于Rankine源格林函数的一阶面元法构造数学模型,然后结合两者得出船舶下沉量的计算方法.以标准船型KCS为例进行验证,计算值与实验值的最大和最小相对误差分别为-10.32%和-1.84%,与实验情况基本相符,说明该算法具有可行性.

In order to analyze ship squat during navigation, the NURBS was used to reconstruct the ship hull surface, and a first-order panel method based on Rankine Source Green Function was applied to construct the mathematical model, and the calculation method of ship squat was obtained on the basis of the above. Taking the standard ship type KCS as an example for verification, the maximum and minimum relative errors between the calculated value and the experimental value were about-10.32% and-1.84% respectively, which were basically consistent with the experimental situation, it shows that the algorithm was feasible.