摘要
基于气泡群平衡方程（BPBE），提出一种用于更系统表征舰船气泡尾流变化特征的数值模型。模型的创新处在于既能反映气体传质因素的影响，又考虑了尾流中实际存在的气泡聚并现象，且具有简单易行，运算效率高的特点。分析结果表明：聚并在近尾流区作用强烈，传质在远程尾流区作用明显；聚并对BND的分布变化影响不大，对气含量的发展变化则发挥着主要作用；尺寸为70～80um的气泡BND最大，尺寸为200um的气泡气含量最大。
Based on bubble population balance equation （BPBE）, a numerical model is put forward to exhibit the ship＇ s bubble wake distribution character more sysmatically. This model, easy to use with high efficiency, can not only indicate the effect of gas diffuseness, but also consider the bubble coalescence phenomenon. The study result indicates ： coalescence takes majority action at the near wake and diffuseness at the far wake ; coalescence makes little effect on the distribution of BND, but produces importantmain effect on the air content ; and BND whose bubble dimension is between 70 - 80 um is the largest and the air content whose bubble dimension is 200 urn is the largest.
出处
《海洋工程》
CSCD
北大核心
2014年第1期99-105,共7页
The Ocean Engineering
基金
"十二五"国防预研资助项目(5131402031)
关键词
舰船尾流
气泡
聚并
气泡群平衡方程
气含量
ship wake
bubbles
coalescence
bubble population balance equation
air content
