基于减小阻力的油船最佳纵倾数值计算研究  

The Numerical Study on Optimal Trim of Oil Tanker Based on Reduce Resistance

作　　者：张晶[1,2] 程细得[1,2] 冯佰威[1,2] 

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2017年第5期871-874,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(51179143)

摘　　要：航行中船舶的航速改变时,通过调整纵倾可以使船舶受到的阻力总是维持在最小,有利于提升船舶节能减排成效.文中采用数值计算方法研究载重量46 000t油船不同航速时的阻力随纵倾值的变化规律,并进行回归分析.采用RANS方程及有限体积法(FVM),数值计算了油船在平浮状态下的阻力值,并与模型试验结果进行对比验证.然后计算不同航速、纵倾下的油船阻力,分析其纵倾变化对船模阻力的影响.在此基础上,提出油船在不同纵倾及航速下总阻力值的回归公式,对实际油船航行纵倾调整具有指导意义.When ship speed changes on the voyage,the ship resistance can be kept to a minimum by adjusting the pitch,which is helpful for energy-saving and emission reduction.In this paper,the numerical simulation method is used to study the change law of resistance of 46 000 DWT oil tanker with different pitch,and then a regression formula is obtained.The resistance value of the tanker in flat floating state is calculated with RANS equation and finite volume method（FVM）The results are compared with the model test results.Then,the same numerical method is used to calculate the resistance of the oil tanker under a series of trim values,and the influence of trim on ship model resistance is analyzed.Finally,the regression formula of the total resistance is presented under different trims and speeds,which has a certain value for the prediction of the actual tanker＇s trim adjustment.

关 键 词：数值计算 模型试验 变纵倾 船模阻力 

分 类 号：U661.31[交通运输工程—船舶及航道工程]