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船舶在波浪中脉动压力预报的三维方法
引用本文:邹元杰,段文洋,任慧龙,宋竞正.船舶在波浪中脉动压力预报的三维方法[J].哈尔滨工程大学学报,2002,23(1):20-25.
作者姓名:邹元杰  段文洋  任慧龙  宋竞正
作者单位:哈尔滨工程大学,船舶工程学院,黑龙江,哈尔滨,150001
基金项目:高等学校博士学科点专项基金资助项目 (970 2 170 2 )
摘    要:船体表面的脉动压力预报对于船体结构有限元分析和可靠性分析是十分重要的。预报船舶运动响应、水动压力和剖面载荷的传统做法是采用切片理论,该理论对常规细长船舶的运动响应和剖面波浪载荷能给出较好的预报结果,但对船体表面脉动压力的预报,却因没有充分考虑三维效应而与船模试验结果出入较大。本文通过引入“高频低速”假定,基于三维线性势流理论,用三维源汇分布法在频域内求解非定常流场,进而计算船舶在规则波中运动、波浪载荷和脉动压力响应。对集装箱船FLOKSTRA的计算结果表明:与切片法相比,本方法计算的脉动压力响应与船模试验结果符合较好。

关 键 词:船舶  波浪  脉动压力预报  三维方法  切片理论
文章编号:1006-7043(2002)01-0020-06
修稿时间:2001年5月20日

Three_dimensional Method for Prediction of Oscillating Pressure on Ship in Waves
ZOU Yuan_jie,DUAN Wen_yang,REN Hui_long,SONG Jing_zheng.Three_dimensional Method for Prediction of Oscillating Pressure on Ship in Waves[J].Journal of Harbin Engineering University,2002,23(1):20-25.
Authors:ZOU Yuan_jie  DUAN Wen_yang  REN Hui_long  SONG Jing_zheng
Abstract:Prediction of oscillating pressure on a ship surface is very important for Finite Element analysis and Reliability Analysis of ship structures. The traditional way of predicting ship motion , pressure and wave loads is the use of Strip Theory to give better motion responses and wave loads for conventional slender ships. But the predicted pressure is not quite in agreement with the experiment results obtained with model ships for neglecting the three-dimensional effect.The motion responses,wave loads and pressure of ships in waves are obtained by assuming high encouter frequency and low forward speed,and solving the unsteady fluid field by using a 3D theory in the frequency domain. The results of computation for Flokstra container ship show that the 3D method proposed gives better pressure distribution than the Strip Theory.
Keywords:oscillating pressure  strip theory  three-dimensional method  
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