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Numerical and experimental investigation of a planing Air Cavity Ship and its air layer evolution

机译:滑行式空船及其气层演变的数值和实验研究

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摘要

The needs to reduce the frictional component of the resistance of a ship leads researchers to find new solutions. The air cavity solution seems to be one of the most promising one. Usually, it is very difficult with the experimental tests to understand the air distribution under the hull and the streamlines during the injection of air. The principal objective of this paper is evaluating the potentiality of the CFD approach in the study of Air Cavity Ships (ACS) for a planing yacht. The first part of paper describes the CFD evaluation of the resistance curves without air injection. The second part deals with the injection of the air under the hull. In this case the boundary conditions are the results of the first campaign of simulations. A comparison between the experimental and CFD results is shown. An assessment of the streamlines and air distribution is proposed and an evaluation of the wetted and ventilated areas is conducted in order to understand the relation between the flow rate, the velocity of the hull and the air distribution. The results can be used for modifying the hull geometry in order to better accommodate the air layer.
机译:减少船舶阻力的摩擦成分的需求促使研究人员找到新的解决方案。气腔解决方案似乎是最有前途的解决方案之一。通常,通过实验测试很难了解注入空气期间船体下方的空气分布和流线。本文的主要目的是评估CFD方法在滑行游艇空船(ACS)研究中的潜力。论文的第一部分描述了在没有空气注入的情况下电阻曲线的CFD评估。第二部分处理船体下方的空气注入。在这种情况下,边界条件是第一次模拟活动的结果。显示了实验结果和CFD结果之间的比较。提出了对流线和空气分布的评估,并对潮湿和通风区域进行了评估,以了解流速,船体速度和空气分布之间的关系。结果可用于修改船体几何形状,以便更好地容纳空气层。

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