基于滑移网格的带桨水面船自航性能预报研究

应用FINE/Marine软件对KCS船、KP505桨以及考虑自由液面的船桨组合体进行数值计算，并计算其自航性能。利用滑移网格技术和随体网格来实现船桨之间的相互耦合。考虑到原有的自航性能数据处理方法并不代表实际情况，文中借鉴强制自航法的概念提出了一种新的船舶自航点求解方法预报船舶自航性能，并与模型试验结果进行比较，吻合良好，其中推力减额系数、伴流分数以及船舶推进效率的计算误差分别为0.5%、2.18%、6.76%。本文研究为预报船舶自航性能提供了一种新的研究手段。

Use of the sliding mesh technique to forecast ship self-propulsion performance with propeller in open water

Numerical simulations are performed for KCS, propeller KP505, KCS/KP505 inter-action considered the free surface by using the software FINE/Marine, and the ship self-propulsion performance are forecasted. The hull/propeller interaction are carried by sliding mesh and mesh with body technique. The original numerical simulation method can't repres-ent actual situation, this paper proposes a new method to forecast ship self-propulsion from the concept of English me-thod of self-propulsion test. The result showed that the numerical simulation matched well with the model test measurement, the error for thrust deduction fraction, wake fraction and ship propul-sion is around 0.5, 2.18 and 6.67%. This study provided a new method to forecast the ship self-pro-pulsion performance.