内河航道船舶航行操纵平面二维数值模拟初步研究

船舶航行操纵数学模型包括水流数学模型和船舶航行数学模型,其中水流数学模型是船舶航行模拟的基础。基于船舶航行操纵数学模型的基本原理,研究开发了船舶航行操纵平面二维数学模型,其中水流数学模型采用贴体坐标系下的平面二维水流数学模型,采用有限体积法对水流基本控制方程进行了离散,在求解过程中采用了欠松弛技术和逐线迭代法,船舶航行数学模型采用比较流行的"组合型"水动力模型,并采用有限差分法离散求解船舶运动方程。根据实船或船模在静水条件及均匀流条件下的航行试验资料,对所建立的船舶航行操纵数模进行了验证和参数率定,结果表明该船舶数模能够正确模拟船舶的航行操纵性能。

Study on numerical simulation of ship manipulation of inland river

The mathematical modeling of ship navigation manipulation consists of two models ：flow mathematical modeling and mathematical modeling of ship navigation, of which flow mathematical modeling is the basis for ship navigation simulation.On the basis of the basic principles of ship navigation manipulation,a plane 2-D mathematical model of ship navigation manipulation was established, in which flow mathematical model under the body-fitted coordinate system based on staggered grid was adopted,and the Combination-type hydrodynamic model for ship navigation manipulation was presented as well.In this model, the finite volume method was adopted to disperse the flow governing equations.And the finite difference method was adopted to disperse the ship manipulation motion equations.According to the test data of ship model under the conditions of still water and uniform flow,the calculating parameters of mathematical modeling were verified.It shows that the ship manipulation can be simulated correctly by this modeling.