三维楔形体与圆锥体的砰击压力  

The study of slamming pressure about three-dimensional wedge and cone

作　　者：司海龙[1] 虞昊[1] 李政杰[1] 胡嘉骏[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《舰船科学技术》2015年第1期17-22,共6页Ship Science and Technology

摘　　要：基于有限元软件Fluent计算楔形体和圆锥体的入水砰击压力,并与试验结果进行比较,对于砰击压力分布及楔形体入水速度变化过程二者吻合较好。重点研究楔形体长宽比对砰击压力的影响。研究发现,楔形体长宽比对砰击压力影响较大,当楔形体长宽比大于3时,三维楔形体中横剖面的砰击压力计算可近似简化为具有同样剖面的二维楔形体入水问题。楔形体入水角对砰击压力极值的分布有很大的影响,相同入水速度条件下,楔形体的砰击压力极值比圆锥体的砰击压力极值大。This paper calculates the slamming pressure of wedge and cone based on software of Fluent. The result agrees well with the experiment in term of the velocity of wedge during entry water and distribution of the slamming pressure. This paper mainly studies the effect of ratio on slamming pressure. The result indicates that the ratio have a great impact on slamming pressure. It could calculate slamming pressure of two-dimensional wedge instead of three-dimensional wedge which has the same middle section with the two-dimensional wedge when the ratio is higher than three. The wedge＇s deadrise angle has a great impact on the distribution of extreme of slamming pressure. The slamming pressure of wedge is higher than those of cone when it entry water with the same speed.

关 键 词：入水速度 砰击压力 长宽比 

分 类 号：U661.44[交通运输工程—船舶及航道工程]