Study on dynamic performance of wave-powered boat under the action of ocean current

IF 1.5 4区工程技术 Q3 ENGINEERING, MARINE

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2022-12-17 DOI:10.1177/14750902221140968

Chao Deng, Jiayi Zhang, Zhanxia Feng, Zhongqiang Zheng, L. Jiang, Z. Chang

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引用次数: 2

Abstract

Wave-powered boat will be affected by the ocean current when moving forward. In order to study the impact of the ocean current on the dynamic performance of wave-powered boat, the fluid-multibody coupled model of the hydrofoil was established in FLUENT through the dynamic mesh method. The hydrodynamic force and moment of the hydrofoil were introduced into the rigid body dynamic equation of the boat, the motion parameters at that time can be calculated by numerical integration to achieve coupling process. The results shows that, with the increase of counter-current velocity, the propulsion velocity of the wave-powered boat and hydrofoil rotation angle both decrease. The results in co-current conditions are more complicated and the rear hydrofoil will be affected by the superposition of the current and the wake vortex falling off from front hydrofoil, causing fluctuations in its rotation process. Beside, the restoring stiffness has an important influence on the propulsion performance of wave-powered boat, so it is necessary to select the appropriate restoring stiffness to improve the propulsion performance of the device under different current velocities.

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海浪动力船在洋流作用下的动力性能研究

波浪船在前进的过程中会受到洋流的影响。为了研究洋流对波浪动力船动力性能的影响，在FLUENT中通过动态网格法建立了水翼的流-多体耦合模型。将水翼的水动力和力矩引入到艇体刚体动力学方程中，通过数值积分计算出艇体此时的运动参数，实现耦合处理。结果表明，随着逆流速度的增大，波浪动力艇的推进速度和水翼的旋转角均减小;共流工况下的结果更为复杂，水流的叠加和前水翼脱落的尾流涡会对后水翼产生影响，使其旋转过程产生波动。此外，恢复刚度对波浪动力船的推进性能有重要影响，因此有必要选择合适的恢复刚度，以提高装置在不同流速下的推进性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment ENGINEERING, MARINE-

CiteScore

3.90

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Engineering for the Maritime Environment is concerned with the design, production and operation of engineering artefacts for the maritime environment. The journal straddles the traditional boundaries of naval architecture, marine engineering, offshore/ocean engineering, coastal engineering and port engineering.