摘要
本文通过Laplace方程的两个解:速度势φ与总头H的类比,导出了脉动压力场可以通过定常速度势计算得到。文中通过一圆球带一个脉动源(相应单桨布置)及带两个脉动源(相应双桨布置)在不同自由表面边界条件下的解析解结果,指出了自由表面的性质对固壁因子存在十分明显的影响;螺旋桨与船体的间隙对固壁因子也产生一定的影响。最后,应用面元法分析计算了一单桨滚装船在不同自由表面条件下的固壁因子值,得出与圆球相同的结论。
Based on the similarity of velocity potential and total head, the fluctuating pressure field can be derived from steady velocity potential. An analytical expression of solid boundary factor (SBF) for a simple hull (sphere) in a source-type pressure field is derived. The results indicate that free surface condition gives SBF a significant influence. To some extent, clearance between hull and propeller gives some effect on SBF as well.Finally, numerical calculation for a real ship is carried out by means' of panel method. The same conclusions are obtained as that for the simple hull.
出处
《中国造船》
EI
CSCD
北大核心
1990年第3期18-28,共11页
Shipbuilding of China
