船舶微气泡减阻尺度效应数值研究  

Research on the Scale Effect of Drag Reduction of Ships by Microbubbles Technology

作　　者：叶代扬 封少雄 苗洋 张磊[1,2] 裴志勇[1,2] YE Daiyang;FENG Shaoxiong;MIAO Yang;ZHANG Lei;PEI Zhiyong(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Green&Smart River-Sea-Going Ship Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力学院,武汉430063 [2]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第5期896-902,共7页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：文中选取了mixture气液两相流模型和RNG k-ε湍流模型,同时考虑两相间作用力,构建了微气泡减阻数值模型,通过平板微气泡减阻试验数据验证了方法可靠性.对相同傅汝德数下的不同尺度船模微气泡减阻进行模拟,对比不同尺度、不同工况下的计算结果,分析船舶微气泡减阻的相似规律.结果表明:尺度小的船模容易达到气流量饱和,即在此基础上继续增加喷气量对减阻率影响不大,缩尺比λ为20时,最大减阻率可达16%;随着模型尺度逐渐增加,即λ分别为20、15和10时,船模在满足相同傅汝德数和喷气速度的情况下,减阻率具有1.5%左右的减小趋势.Mixture gas-liquid two-phase flow model and RNG k-εturbulence model were selected,and the numerical model of microbubble drag reduction was constructed considering the two-phase force.The reliability of the method was verified by the experimental data of flat microbubble drag reduction.The drag reduction of ship model microbubbles with different scales under the same Froude number was simulated,and the calculation results of different scales and different working conditions were compared to analyze the similar law of ship microbubble drag reduction.The results show that the small-scale ship model is easy to reach gas flow saturation,and the drag reduction rate is not affected much by increasing the air injection volume.When the scale ratioλis 20,the maximum drag reduction rate can reach 16%.With the scale of the model gradually increasing,whenλis 20,15 and 10 respectively,the drag reduction rate of the ship model has a decreasing trend of about 1.5%under the condition of satisfying the same Froude number and jet speed.

关 键 词：船舶 微气泡减阻 两相流 尺度效应 数值模拟 

分 类 号：U661[交通运输工程—船舶及航道工程]