ABSTRACT

In an age where sailing boats are losing their reputation of slow-moving vehicles, and where technologies are developing at explosive rhythm, the scantling criteria are deeply changing and naval architects face new challenges. Beside a literature review on sailing yacht appendages design, the state of the art of the methods for fluid-elastic phenomena prediction is presented. To face the problem of numerical modelling, an overview on Fluid-Structure Interaction (FSI) numerical computational is provided, introducing the main parameters to care about while modelling the interaction of a hydro-foil with the flow. The software capabilities are explored, reporting the main steps to follow, in order to build both solid and fluid models of a hydrofoil, and to couple them in a FSI analysis. A suitable test case has been selected, providing numerical and experimental reference for outcomes comparisons. The results are presented focusing on tolerances, relaxation factors and time discretisation effect on the solution.

摘要

在当今的时代，帆船正逐渐失去其在慢速行驶车辆中的声誉，并且技术正以爆炸性的节奏发展，其规模标准正在发生深刻变化，而海军建筑师则面临着新的挑战。除了有关帆船附件设计的文献综述之外，还介绍了流体弹性现象预测方法的最新技术。面对数值建模的问题，提供了流体-结构相互作用（FSI）数值计算的概述，介绍了在对水翼与流动的相互作用进行建模时要注意的主要参数。探索了软件功能，报告了要遵循的主要步骤，以便建立水翼的固体和流体模型，并将它们耦合到FSI分析中。选择了合适的测试用例，为结果比较提供数值和实验参考。给出结果的重点是公差，松弛因子和时间离散化对解决方案的影响。