变结构滑行艇斜浪航行耐波性数值分析

Numerical analysis of seakeeping performance of variable structure planing craft in Inclined waves

摘要:

为改善传统滑行艇在波浪环境中耐波性问题，本文提出了一种兼具快速性与耐波性的变结构滑行艇，通过收放两侧片体实现滑单体形态与三体形态之间自由转换。为分析片体在斜浪航行中的减摇效果，本文采用数值方法对滑行艇两种形态在斜浪航行中的耐波性进行对比分析，结果表明片体能够起到减横横摇作用，且其减横摇效果在单体形态的共振区域内最明显，在βw=60°时片体最多能减少70.45%的横摇幅值。

关键词:滑行艇;三体船;斜浪航行;耐波性

Abstract:

In order to improve the seakeeping performance of traditional planing craft in waves, this article proposes a variable structure planing craft with both speedability and seakeeping performance, which realizes the free conversion between mono-hull state and trimaran state by rewind and release of two demihulls. In order to analyze the anti-roll effect of the demihull in inclined waves sailing, the numerical method is used to compare the seakeeping performance of the two states of planing craft in the inclined wave sailing. The results show that the demihull can reduce roll, and the anti-roll effect is most obvious in the resonance region of the mono-hull. When the βw=60°, the body can reduce roll amplitude by 70.45% at most.

Key words:Planing craft; Trimaran; Inclined waves sailing; Seakeeping performance