用源分布方法求解浅水中二维任意剖面在自由表面上垂荡的附加质量和阻尼系数  

The Study of Two-dimensional Arbitrary Section Oscillation on a Free Surface of Shallow Water

作　　者：陈宏彬[1] 李远林[1] 

机构地区：[1]华南理工大学

出　　处：《船舶工程》1997年第3期8-11,3,共4页Ship Engineering

摘　　要：用源分布方法求解了二维任意剖面在浅水中垂向振荡问题，计算了系列60方型系数0.7船型剖面在不同水深吃水比情况下的垂荡水动力系数，讨论了水深对水动力系数的影响，并与Frank无限水深的结果作了比较。研究结果表明，水深对二维船型剖面水动力系数具有较大的影响。这种影响在水深吃水比小于5.0时已相当明显，当水深吃水比小于2.0时将变得显著。另外，水深对水动力系数的影响与振荡频率有关，并且在低频处更为明显。The problem of heaving oscillation of an arbitrary two dimensional section in shallow water free surface is solved by using source distribu-tion method.The hydrodynamic coefficients of middle section of the series 60 ships with a block coefficient of 0.7 are calculated for several dif-ferent water depth to draft ratios. The effect of water depth on heaving hydrodynamic coefficients is discussed. The calculating results are compared with the infinite deep water results obtained by Frank.It shows that the effect of waterdepth on hydrodnamic coefficient is remarkableand it is related to oscillation frequency.

关 键 词：垂荡水动力系数 有限水深 二维源分布法 油船 

分 类 号：U674.133.1[交通运输工程—船舶及航道工程]