舰船气泡尾流分布的BPBE表征方法研究  

Token method study for ship wake's BND distribution based on BPBE

作　　者：王桂军[1] 闫雪飞[1] 金良安[1] 苑志江[1] 

机构地区：[1]海军大连舰艇学院航海系,辽宁大连116018

出　　处：《海洋工程》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)

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.

关 键 词：舰船尾流 气泡 聚并 气泡群平衡方程 气含量 

分 类 号：U661.1[交通运输工程—船舶及航道工程]