多体船形状因子1＋k确定方法  

Method for determining the form factor 1+k of multihull vessel

作　　者：周广利[1] 艾子涛 邓锐[1] 振前 黄德波[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]英辉南方造船厂广州番禹有限公司技术中心,广东广州511431

出　　处：《哈尔滨工程大学学报》2016年第3期338-343,共6页Journal of Harbin Engineering University

基　　金：工信部高技术船舶基础研究资助项目(2012545)

摘　　要：针对确定多体船形状因子(1+k)的方法具有争议性的问题,采用CFD叠模计算确定双体和三体等多体船形状因子的方法。用CFD叠模方法计算了某单体散货船以及多体船在不同航速下的船体形状因子(1+k),并分析随航速的变化规律,结果表明单体船通过叠模数值计算结果与ITTC建议的低速模型试验结果基本吻合,而多体船其所得结果存在一定差异。经分析得知基于CFD叠模计算确定单体船形状因子(1+k)方法具有可行性,采用CFD叠模计算船体形状因子更能体现多体船形状因子随航速变化的实际情况,也表明CFD叠模计算船体形状因子(1+k)的方法可能更适用于多体船型。Regarding the controversial issues of the methods for determining the form factor of catamaran and trimaran vessels,this paper proposes an exploratory method for obtaining the shape factor using a stack model based on computational fluid dynamics（ CFD） technology. We calculated the form factor of a single-hull bulk carrier and a multihull vessel at different speeds,using the CFD stack model,and analyzed its change with speed. The results show that those calculated from the stack model for a single-hull vessel basically match the low-speed model test results suggested by ITTC,but the multihull vessel calculation results differ from the test results. According to our analysis,the CFD-based method for determining a shape factor of 1 ＋ k is feasible. Using the CFD stack model to calculate the form factor of a vessel body can better characterize the actual conditions of a multihull vessel＇s form factor as it varies with navigation speed,which demonstrates that the proposed method is more applicable to multihull vessels.

关 键 词：多体船 双体船 三体船 形状因子 计算流体力学 叠模 

分 类 号：U661.31[交通运输工程—船舶及航道工程]