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Droplet trajectories of wave-impact sea spray on a marine vessel

机译：冲击波在海上船舶上的液滴轨迹

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摘要

Marine icing phenomena are strongly dependent on the rate of water impact to marine vessels. The most important source of this incoming water is wave-impact sea spray. There is limited understanding of droplet size and velocity distributions of wave-impact sea spray. Initial distributions of the size and velocity of droplets are crucial for the calculation of the droplet path and consequently for determining the water impact to every individual place on marine vessels. This paper develops a new model of wave-impact sea spray using a distribution of the size and velocity of droplets at the edge of the vessel. The concepts of water-sheet breakup and droplet breakup lead to an inverse dependence between the size and velocity of droplets after the breakup process. Droplets take different paths and form a spray cloud in front of the vessel. The liquid water content in front of the vessel can be calculated by considering the arrangement, sizes, and velocities of a set of droplets in the spray cloud. The response of the droplet trajectory model to various initial conditions with different sets of droplet sizes and velocities is examined. The numerical results are compared to real data from field observations. Droplet sizes are inversely proportional to droplet velocities, as verified by liquid water content data obtained by the field observations. This paper proposes the use of this inverse relationship based on physics of the breakup process as the initial data for calculating the wave-impact-sea spray trajectory in front of a vessel. (C) 2016 Elsevier B.V. All rights reserved.
机译：海洋结冰现象在很大程度上取决于水对船舶的影响速度。这种传入水的最重要来源是波浪冲击式海浪。对波浪冲击海浪的液滴大小和速度分布的了解有限。液滴尺寸和速度的初始分布对于液滴路径的计算至关重要，因此对于确定水对船舶上每个单独位置的影响至关重要。本文利用容器边缘的液滴尺寸和速度分布，开发了一种波浪冲击海浪的新模型。水床破裂和液滴破裂的概念导致在破裂过程之后液滴的大小和速度之间的逆相关性。液滴采用不同的路径，并在容器前面形成雾状云。可以通过考虑喷雾云中一组液滴的布置，大小和速度来计算容器前面的液态水含量。检查了液滴轨迹模型对具有不同液滴大小和速度集的各种初始条件的响应。将数值结果与现场观测的真实数据进行比较。液滴大小与液滴速度成反比，这已通过现场观测获得的液态水含量数据得到验证。本文提出基于解体过程物理学的逆关系作为计算船前波浪冲击海浪轨迹的初始数据。 （C）2016 Elsevier B.V.保留所有权利。

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