摘要
多波束作为海底地形和资源勘探的工具已被广泛应用,然而受水流速度和噪声等的干扰,其测量精度有较大影响,有必要结合科考船的实际工况对月池导流罩进行优化设计。本文以探测型科考船为研究对象,针对科考船月池内部流场紊乱、水体噪音大等问题,开展月池导流罩的优化设计。首先从多波束设备外部导流减阻方面考虑,设计无缘喇叭口流线型导流罩。然后进一步从降低水体紊流度、防缠绕及消除卷吸效应等方面着手先后设计了局部挡水板、增设外缘、全封闭型、分体错位型、单外延对接结构及改用直线平口挡板等8种导流罩的优化设计方案。采用计算流体力学方法详细分析了各个方案下科考船月池在不同航速时内部的流场特性及水动力性能,最终得出分体错位型导流罩为该型科考船最佳设计方案。本文可为旧船改造、船型优化提供技术参考。
Multi-beam has been widely used in scientific research ships as an ocean measurement tool.But due to the interference of water velocity and noise,it is necessary to design a suitable fairing for the moon pool in combination with the local environment.Optimization designs of the fairing for the multi beam equipment inside the moon pool were studied for the scientific research ship.Firstly,a streamlined fairing scheme with no edge horn mouth was designed considering the external flow and drag reduction of multi beam equipment.Then,from the aspects of reducing water turbulence,preventing entanglement,eliminating air bubbles,and eliminating entrainment effects,six optimization design schemes were carried out,including local water blocking plates,adding outer edges,fully enclosed type,separated and misaligned type,single extension docking structures,and using linear flat mouth baffles.The CFD method was used to analyze the internal flow field characteristics and hydrodynamic performance of the moon pool of the research ship in detail under various schemes at different speeds.Finally,the scheme of separated and misaligned fairing is proved to be the optimal design scheme for this type of scientific research ship.It provide technical supports for old ship transformation and ship shape optimization.
作者
刘艳贵
傅望安
曾崇济
田晓庆
LIU Yangui;FU Wangan;ZENG Chongji;TIAN Xiaoqing(Clean Energy Branch of Huaneng(Zhejiang)Energy Development Co.,Ltd.,Hangzhou 310014,China;China Huaneng Clean Energy Research Institute,Beijing 102209,China;School of Mechanical Engineering,Hangzhou Dianzi Unviersity,Hangzhou 310018,China)
出处
《海洋技术学报》
2024年第6期29-37,共9页
Journal of Ocean Technology
基金
浙江省重点研发计划资助项目(2018C04002)。
关键词
科考船
多波束
数值模拟
导流罩
流场分析
research ship
multi-beam
numerical simulation
fairing
fluid field analysis
作者简介
刘艳贵(1971-),男,学士,高级工程师,主要从事新能源开发、建设和运营方面研究。E-mail:liuyanguihn@163.com;通讯作者:田晓庆(1986-),女,博士,副教授,主要从事海洋工程方面研究。E-mail:tianxiaoqing@hdu.edu.cn。
