摘要
该文为准确描述波浪中大气泡的运动规律,分别建立气泡传热传质、速度和半径的微分方程,并结合二维深水波模型,进而构建波浪场中高温气泡上浮运动的耦合模型。采用变步长龙格库塔法进行数值求解,模拟得出气泡在不同影响要素下的三个运动规律:一是气泡在波浪中受牵引作用,上浮轨迹呈螺旋状,且随气泡半径减小,螺旋交叠密集,上升速度减缓,跟随波浪能力增强;二是初温越高的气泡与半径越小的气泡所表现的运动规律大致相同;三是波浪的波长越长,波高越高,气泡在波浪传播方向的位移越大,对气泡的携带能力越强。该模型及结论考虑了真实海况中波浪对气泡运动的影响,可作为研究舰船主机尾气消尾流技术中大气泡运动特性及演化规律的理论基础。
To describe the bubble motion characteristics in the waves,the paper constructes the differential equations for the bubble heat and mass transfer,bubble velocity and bubble radius.Combined with the two-dimensional deep wave model,a model for bubble motion in the waves is formulated.Three characteristics of bubble motion are concluded by numerical simulation with variable step Runge-kutta method.Firstly,the bubble rises with a spiraling track by wave tractive effort,the smaller bubbles are spiral intensive,velocity reduction and strong ability of staying with wave.Secondly,the motion characteristics of higher initial temperature bubbles and smaller bubbles are much the same.Thirdly,as with greater wave length and wave height,the bubble displacement along the direction of propagation of waves is greater,and wave carriage ability is stronger.Considering the effects of waves on bubble motion under the real sea state,this coupling model and conclusion are theoretical bases for the research on the characteristics of bubbles and their evolution rules.
作者
张志友
金良安
何升阳
苑志江
ZHANG Zhi-you;JIN Liang-an;HE Sheng-yang;YUAN Zhi-jiang(Dept. of Navigation, Dalian Naval Academy, Dalian 116018, China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2018年第3期305-313,共9页
Chinese Journal of Hydrodynamics
基金
海军国防预研课题(401040301)~~
关键词
气泡运动
耦合模型
半径
温度
波浪
bubble motion
coupling model
radius
temperature
waves
作者简介
张志友（1989-），男，辽宁大连人，博士研究生．Email：zhiyou626@163．com
