FLOWTECH International AB

SHIPFLOW源于FLOWTECH International AB与SSPA和查尔姆斯理工大学海军建筑系密切合作的长期研究。

自 1992 年 FLOWTECH 发布第一个版本以来，SHIPFLOW 许可证的数量稳步增长。顶级造船厂、顾问公司和大学都是 SHIPFLOW 的用户。该软件由造船工程师、物理学家和数值分析师开发，针对船舶流体动力学设计进行了优化。专业化意味着 SHIPFLOW 是有效且用户友好的。在船体设计方面，没有任何通用代码可以与SHIPFLOW竞争：网格是自动生成的，阻力和推进数据以造船师的方式呈现，求解器适用于船体几何形状。在过去的二十年中，SHIPFLOW 已发展成为船舶流体动力学 CFD 的世界标准。

CFD工具组合 — 一个关键特性

在船舶设计中，交货时间越来越短，特别是在初始阶段，需要在短时间内评估许多变体。SHIPFLOW中的潜在流板方法提供了一种有效的可能性。XPAN模块可以快速预测波浪和波浪阻力等重要量，但精度足以进行船体排名，以及SHIPFLOW MOTIONS，可以预测船舶运动和波浪中的附加阻力。粘性效应也很重要，并在 SHIPFLOW 模块 XCHAP 中实现。使用 SHIPFLOWS 先进的网格化技术，可以进行一系列优化。例如，裸船体总阻力、流入螺旋桨平面、螺旋桨开放水域测试、自推进、附件优化等。

先进的网格化技术

创建网格至关重要，也是 SHIPFLOW 成功的关键。这是SHIPFLOW对海军建筑师的专业化最明显的地方。首先，RANS求解器的网格以及XPAN的网格是从船体形状自动创建的。可以处理各种类型的船体形状，如单体船、双船、多体船、帆船等。除此之外，SHIPFLOW 还使用高效的重叠网格技术与附属物一起使用。这种方法的优点是非常灵活，可以方便地优化附属物。使用参数和坐标可以改变附件的设计、位置和方向。附件的一个例子是节能装置，然后很容易改变和优化。其他例子包括方向舵、支架、轴、涡流发生器、吊舱支柱和外壳等。网格之间的所有交互都是自动处理的。

完整包装

SHIPFLOW Design – Advanced/Basic 是一个完整的软件包，包括预处理、网格划分/网格划分、CFD 求解器和后处理。由于我们与Friendship Systems的密切合作，我们能够提供这一点。Friendship Systems制造并销售了一种先进的优化工具–CAESES。SHIPFLOW Design 是该程序的一个子集，在优化和参数化建模方面存在一些限制。

当然，我们很乐意将 SHIPFLOW 与 CAESES 一起打包。

SHIPFLOW stems from long term research at FLOWTECH International AB in close cooperation with SSPA and the Naval Architecture Department at Chalmers University of Technology.

The number of SHIPFLOW licenses has grown steadily since the first version was released by FLOWTECH in 1992. Top Shipyards, Consultants and Universities are among the SHIPFLOW users. Developed by naval architects, physicists and numerical analysts the software is optimised for ship hydrodynamics design. Specialisation means SHIPFLOW is effective and user friendly. No general purpose code can compete with SHIPFLOW in hull design: grids are automatically generated, resistance and propulsion data are presented in the naval architects way and the solvers are adapted for hull geometries. Over the past twenty years SHIPFLOW has developed into the world standard for ship hydrodynamics CFD.

COMBINATION OF CFD TOOLS — A KEY FEATURE

Lead times are more and more compressed in ship design, particularly at the initial phase where many variants need to be evaluated in a short period of time. An efficient possibility is offered by the potential flow panel methods in the SHIPFLOW. The module XPAN, which predicts important quantities like waves and wave resistance rapidly, yet with accuracy sufficient for hull ranking, and SHIPFLOW MOTIONS which predicts the ship motions and added resistance in waves. Viscous effects are also important and implemented in the SHIPFLOW module XCHAP. Using SHIPFLOWS advanced gridding technique an array of optimisations can be done. For example, bare hull total resistance, flow into the propeller plane, propeller open water tests, self propulsion, appendage optimisation etc.

ADVANCED GRIDDING TECHNIQUE

Creating grids is paramount and the key to SHIPFLOW’s success. This is where the SHIPFLOW specialisation towards Naval Architects is most obvious. Firstly, grids for the RANS solvers as well as meshes for XPAN are created automatically from the hull shape. Various types of hull shapes can be handled, such as monohulls, twin skeg hulls, multihulls, sailing yachts etc. In addition to this SHIPFLOW uses an efficient overlapping grid technique for use with appendages. This method has the advantage of being very flexible making optimisation of appendages convenient. Using parameters and coordinates the design, position and orientation of the appendage can be varied. An example of appendage is energy saving devices which are then easily varied and optimized. Other examples are, rudders, brackets, shafts, vortex generators, pod struts and housings etc. All interactions between the grids are taken care of automatically.

COMPLETE PACKAGE

SHIPFLOW Design – Advanced/Basic is a complete package including pre processing, gridding/meshing, CFD-solvers and post processing. We are able to offer this due to our close cooperation with Friendship Systems. Friendship Systems make and market an advanced optimisation tool — CAESES. SHIPFLOW Design is a subset of this program with some limitations when it comes to optimisation and parametric modelling.

Naturally we are happy to package SHIPFLOW together with CAESES.