Towards Fully Non-Linear Floating Body Simulations by a Potential Method

Towards Fully Non-Linear Floating Body Simulations by a Potential Method
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通过势方法实现完全非线性浮体模拟

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发表时间：
2012
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通讯作者：
H. Söding
H. Söding
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作者：
H. Söding

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本文发展了一种三维朗肯源面元法，用于模拟陡波中的刚性浮体。其目的是获得与自由表面RANSE方法相同的质量，这是非常适合这种应用程序，但只需要一小部分的RANSE方法所需的计算时间。身体可以具有前进速度或执行操纵运动。在流体边界的实际位置处满足精确的边界条件。波不是由物质造波机产生的，而是由不需要满足精确自由面条件的近似波势产生的。不需要波浪阻尼区。然而，对于没有物体的陡波，该方法似乎令人满意，如果存在物体，则需要进一步改进。
A 3-dimensional Rankine source panel method for simulating a rigid floating body in steep waves is being developed. The aim is to obtain the same quality as free-surface RANSE methods, which are well suited for this application, but to require only a small fraction of the computing time needed by RANSE methods. The body may have forward speed or perform maneuvering motions. The exact boundary conditions are satisfied at the actual location of the fluid boundaries. The waves are generated not by a material wave maker, but by an approximate wave potential which needs not satisfy the exact free-surface condition. No wave damping regions are required. Whereas for steep waves without a body the method appears satisfactory, it needs further improvements if a body is present.Copyright © 2012 by ASME