propeller-hull vortex cavitation

简明释义

船桨涡空化

英英释义

例句

1.The design of the hull was modified to minimize propeller-hull vortex cavitation and improve overall stability.

船体的设计经过修改，以减少螺旋桨-船体涡流空化并提高整体稳定性。

2.The ship's performance was compromised due to excessive propeller-hull vortex cavitation, which caused a significant loss of thrust.

由于过度的螺旋桨-船体涡流空化，船只的性能受到了影响，导致推力显著下降。

3.To enhance the vessel's efficiency, the team focused on reducing propeller-hull vortex cavitation in their new designs.

为了提高船只的效率，团队专注于在新设计中减少螺旋桨-船体涡流空化。

4.During the simulation, propeller-hull vortex cavitation was identified as a major factor in noise generation.

在模拟过程中，螺旋桨-船体涡流空化被确定为噪音产生的主要因素。

5.Engineers studied the effects of propeller-hull vortex cavitation on fuel efficiency during trials.

工程师在试验中研究了螺旋桨-船体涡流空化对燃油效率的影响。

作文

Understanding the complexities of marine engineering requires a deep dive into various phenomena that affect vessel performance. One such phenomenon is propeller-hull vortex cavitation, which occurs when the interaction between a ship's propeller and hull creates vortices that can lead to cavitation. Cavitation is the formation of vapor bubbles in a liquid, which can collapse violently, causing damage to the propeller and hull over time. This process is not only detrimental to the structural integrity of the vessel but also affects its efficiency and maneuverability.The propeller-hull vortex cavitation phenomenon typically arises at high speeds or under specific load conditions when the flow of water around the propeller becomes turbulent. As the propeller spins, it generates low-pressure areas behind it, creating vortices that can draw in surrounding water. If the pressure drops sufficiently, the water vaporizes, forming bubbles. When these bubbles move into higher pressure areas, they implode, producing shock waves that can erode metal surfaces.This issue is particularly critical for naval architects and marine engineers, as it directly impacts the design and operation of vessels. To mitigate propeller-hull vortex cavitation, engineers must consider several factors during the design phase, including the shape of the hull, the size and type of the propeller, and the overall hydrodynamic profile of the vessel. By optimizing these elements, it is possible to reduce the intensity of the vortices generated and, consequently, the risk of cavitation.Research has shown that certain hull designs, such as those with bulbous bows or specialized stern configurations, can help minimize the adverse effects of propeller-hull vortex cavitation. Additionally, advancements in propeller technology, such as the development of more efficient blade shapes and materials, have contributed to reducing cavitation occurrences. Computational fluid dynamics (CFD) simulations are also invaluable tools in predicting and analyzing the behavior of water flow around vessels, allowing for better-informed design choices.The implications of propeller-hull vortex cavitation extend beyond mere structural concerns; they also encompass economic factors. Vessels suffering from excessive cavitation may experience increased fuel consumption due to decreased propulsion efficiency, leading to higher operational costs. Furthermore, the maintenance and repair of damaged propellers and hulls can be costly and time-consuming, affecting the overall profitability of maritime operations.In conclusion, a thorough understanding of propeller-hull vortex cavitation is essential for anyone involved in the maritime industry. As vessels continue to evolve and operate in increasingly demanding environments, addressing the challenges posed by this phenomenon will be crucial for ensuring safety, efficiency, and sustainability in marine transportation. By investing in research and development focused on mitigating cavitation effects, the industry can enhance vessel performance and longevity, ultimately benefiting both operators and the environment.

理解海洋工程的复杂性需要深入研究影响船舶性能的各种现象。其中一个现象是螺旋桨-船体涡流空化，它发生在船舶的螺旋桨与船体之间的相互作用产生涡流时，这可能导致空化。空化是液体中蒸汽气泡的形成，这些气泡可以猛烈地崩溃，随着时间的推移对螺旋桨和船体造成损害。这个过程不仅对船舶的结构完整性有害，而且还影响其效率和机动性。螺旋桨-船体涡流空化现象通常在高速或特定负载条件下出现，当水流在螺旋桨周围变得湍流时。随着螺旋桨的旋转，它在后面产生低压区域，形成涡流，这些涡流可以吸入周围的水。如果压力降得足够低，水就会蒸发，形成气泡。当这些气泡进入更高压力区域时，它们会突然崩溃，产生冲击波，侵蚀金属表面。这个问题对于海军建筑师和海洋工程师来说尤为重要，因为它直接影响到船舶的设计和操作。为了减轻螺旋桨-船体涡流空化，工程师在设计阶段必须考虑几个因素，包括船体的形状、螺旋桨的大小和类型，以及船舶的整体水动力轮廓。通过优化这些元素，可以减少产生的涡流的强度，从而降低空化的风险。研究表明，某些船体设计，例如带有球鼻或特殊船尾配置的设计，可以帮助最小化螺旋桨-船体涡流空化的不利影响。此外，螺旋桨技术的进步，例如开发更高效的叶片形状和材料，也有助于减少空化的发生。计算流体动力学（CFD）模拟也是预测和分析水流在船舶周围行为的宝贵工具，使得设计选择更加明智。螺旋桨-船体涡流空化的影响不仅限于结构问题；它们还涉及经济因素。遭受过度空化的船舶可能由于推进效率降低而导致燃料消耗增加，从而导致更高的运营成本。此外，受损螺旋桨和船体的维护和修理可能成本高昂且耗时，影响海事运营的整体盈利能力。总之，全面了解螺旋桨-船体涡流空化对于任何参与海事行业的人来说都是必不可少的。随着船舶的不断发展并在日益苛刻的环境中运营，解决这一现象带来的挑战对于确保海洋运输的安全、高效和可持续性至关重要。通过投资于专注于减轻空化影响的研究和开发，行业可以提高船舶的性能和寿命，最终使运营商和环境受益。