CALCULATION OF THE TIME-TO-FLOOD OF A BOX-SHAPED BARGE BY USING CFD-猫眼课题宝

DOI：

发表时间：

2009

期刊：

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

C. Strasser;A. Jasionowski;D. Vassalos

本文讨论了一个虚拟模型的箱形驳船已被用作ITTC验证模型的损伤生存性评估。本研究最重要的目的是找出受损船舶的淹没时间。因此，洪水动力学和水通过各种开口和开口形状的船舶上层建筑的侵入占。本研究的出发点是对现有文献中评估客船破舱稳性和生命力的打击模型和方法进行全面的回顾，旨在找出现有理论的优点和不足。基于这些知识，决定利用计算流体动力学（CFD），它比任何其他数值方法提供了更多的信息和渐进式洪水物理学的细节。商业数值计算流体动力学代码用于创建具有适当边界条件的设置。在这种方法中，它试图占所有可能的物理效应与国家的最先进的数值方法。根据模型的几何形状，在模拟中使用可压缩空气，其中预期存在滞留空气，或者滞留空气的影响可能至关重要。此外，在高流速区域采用k湍流模型，以便尽可能真实地模拟通过损坏开口和内部开口的水流和气流。此外，一个六自由度的求解器已被集成，模拟船舶运动的网格重新划分和网格平滑的方法。本文所述的数值模型代表了迄今为止最先进的处理建模过程中的渐进式洪水与使用CFD。可以得出结论，所应用的方法完全符合所有的验证情况下，精度是令人满意的，虽然进行了模拟与简化模型。从推理上讲，洪水时间的预测主要是在船舶保持准静水条件下的一段时间内得出的。1研究助理，名称，格拉斯哥和斯特拉斯克莱德大学2教授，名称，格拉斯哥和斯特拉斯克莱德大学

This paper addresses the assessment of the damage survivability of a fictitious model of a boxshaped barge which has been used as ITTC validation model. The most important aim of this research is to find out about the time-to-flood of damaged vessels. Therefore floodwater dynamics and water ingress through various openings and opening shapes in the ship superstructure are accounted. Starting point of this research is a thorough review of the available literature striking models and methods, which assess damage stability and survivability of passenger ships, aiming to identify strength and weaknesses of existing theories. Based on this knowledge it is decided to utilise Computational Fluid Dynamics (CFD) which gives to date more information and details of the physics of progressive flooding than any other numerical method. A commercial numerical CFD code is used to create a set-up with appropriate boundary conditions. In this approach, it is attempted to account for all possible physical effects with state-of-the art numerical methods. Depending on the geometry of the model, compressible air is used in the simulation, where trapped air is expected or, where the influence of trapped air could be crucial. Moreover, a kturbulence model is adopted in areas of high flow velocities in order to model the water and air flow through the damage opening and internal openings as true-to-life as possible. Additionally, a six degrees-of-freedom solver has been integrated which simulates ship motions by grid remeshing and grid smoothing methods. The numerical model described in this paper represents the most advanced treatment to date of modelling the process of progressive flooding with the use of CFD. It can be concluded that the applied method agrees perfectly with all validation cases and that accuracy is satisfactory though simulations with simplified models are carried out. Inferential, the prediction of time-to-flood is mainly derived in a period where the ship remains in quasi-hydrostatic conditions. 1 Research Assistant, NAME, Universities of Glasgow and Strathclyde 2 Professor, NAME, Universities of Glasgow and Strathclyde

CALCULATION OF THE TIME-TO-FLOOD OF A BOX-SHAPED BARGE BY USING CFD

文献摘要

被引文献

相似文献