Impacts of rudder profiles on ship manoeuvrability
Impacts of rudder profiles on ship manoeuvrability
复制标题
DOI：
--
复制
发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
Jialun Liu;F. Quadvlieg;R. Hekkenberg
中科院分区：
文献类型：
--
作者：
Jialun Liu;F. Quadvlieg;R. Hekkenberg
船舶舵的性能在很大程度上决定了船舶的操纵性能，它包括转向能力、初始转向能力、抗偏航能力和航向保持能力。然而，现有的经验公式舵力不涉及舵的轮廓。本文讨论了不同舵型对船舶操纵性的影响。采用计算流体动力学方法（CFD）代替舵面特性的经验公式，获得了五种翼型的升阻系数。然后，计算每个轮廓的法向力系数，并针对纵横比进行校正。商业软件包Pointwise和ANSYS ICEM分别生成非结构化和结构化网格。ANSYS Fluent求解Navier-Stokes方程。采用k-w SST湍流模型对舵在不可压缩水中的二维定常粘性流场进行了数值模拟。为了测试对操纵性的影响，在Python中为KVLCC 2油轮在深水中建立了操纵模型。执行转弯圆机动和Z字形机动以比较机动参数。本文的结论与见解舵剖面对船舶操纵性的影响。
The performance of a ship’s rudder largely determines its manoeuvrability, which includes turning ability, initial turning ability, yaw-checking ability and course-keeping ability. However, existing empirical formulas for rudder forces do not concern the rudder profile. This paper discusses the impacts of various rudder profiles on ship manoeuvrability. Instead of empirical formulas for rudder characteristics, Computational Fluid Dynamic methods (CFD) are applied to obtain lift and drag coefficients of five profiles. Then, the normal force coefficient of each profile is calculated and corrected for the aspect ratio. Commercial packages Pointwise and ANSYS ICEM generate the unstructured and structured mesh, respectively. ANSYS Fluent solves the Navier-Stokes equations. 2D steady-state viscous simulations of rudders in incompressible water are carried out with the k-w SST turbulence model. To test the impacts on manoeuvrability, a manoeuvring model is built in Python for the KVLCC2 tanker in deep water. Turning circle manoeuvres and zigzag manoeuvres are performed to compare the manoeuvring parameters. This paper concludes with insights into the impacts of rudder profiles on ship manoeuvrability.