为揭示波浪驱动下箱式浮体运动响应及受波浪力的影响机制,采用Smoothed Particle Hydrodynamics(SPH)方法对不同Keulegan-Carpenter(KC)数工况下单个浮体的运动响应及所受波浪力、不同浮体间距δ工况下2个浮体的运动响应进行了系统研究。结果表明:KC数越大,单个浮体的运动响应越剧烈,所受波浪力越大。随着δ的增加,上游浮体(浮体I)的纵向位移逐渐接近于单个浮体工况,垂向运动以及俯仰转动受δ的影响较小;下游浮体(浮体Ⅱ)的纵向位移呈现明显的增加趋势,俯仰转动有逐渐减弱趋势,而垂向运动受δ的影响较小。
Abstract
In the purpose of revealing the mechanism of motions and wave forces of floating rectangle boxes driven by waves, a numerical mode based on the Smoothed Particle Hydrodynamics (SPH) method was developed. The motions and wave forces of a single floating rectangle box under different Keulegan-Carpenter (KC) numbers were systematically studied, and the motions of two floating rectangle boxes under different spacings (δ) between floating bodies were also examined. It was found that the surge, heave and pitch motions of the single floating rectangle box all intensified with the growth of KC number, and the corresponding wave forces also strengthened. As δ increased, the surge motion of the upstream floating box (floating box I) gradually approached that of the single floating box, while the heave and pitch motions were approximately unaffected. Moreover, the surge motion of the downstream floating box (floating box II) strengthened apparently, the pitch motion showed a tendency of gradual decline, whereas the heave motion was still approximately unaffected.
关键词
箱式浮体 /
运动响应 /
SPH方法 /
KC数 /
浮体间距 /
波浪力
Key words
floating rectangle box /
motions /
SPH method /
KC number /
spacing between floating bodies /
wave forces
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基金
安徽省自然科学基金项目(2008085QA22);安徽工程大学国家自然科学基金预研项目(Xjky2020167)
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