中国舰船研究2024，Vol.19Issue(2)：21-30,10.DOI:10.19693/j.issn.1673-3185.03194
近壁旋转圆柱流场特性数值模拟分析
Numerical simulation analysis of flow around near-wall rotating cylinder
摘要
Abstract
[Objectives]To investigate the near-wall rotating cylindrical wake and hydrodynamic character-istics,flow around cylinder at typical gap ratios is investigated.[Methods]A numerical simulation of flow around a near-wall rotating cylinder with different gap ratios(G/D = 0.2,0.8,1.4)and rotation rates at Reyn-olds number Re=200 was carried out to compare the cylindrical wake and hydrodynamic characteristics at dif-ferent gap ratios and rotation rates.[Results]The results show that:For G/D=0.2,the cylindrical vortex shedding is significantly suppressed and the lift and drag force on the cylindrical surface remain steady.For G/D=0.8 and G/D=1.4,at low rotation rates,the"wake vortex"is shed and is similar to the 2S pattern,with sinusoidal periodic fluctuations in the lift and drag coefficients and small amplitude;at higher positive rotation rates,the cylindrical wake pattern is the stable D pattern with no vortex shedding(changing from D+ to D-pat-tern as the rotation rate increases),the"wake vortex layer"is separated from the"wall vortex layer",the"wall vortex"is shed multi-periodically,the lift and drag coefficients are fluctuating multi-periodically and the amp-litude is increasing significantly;at higher reverse rotation rates,the cylindrical surface is wrapped by a posit-ive boundary layer,with no vortex shedding and no fluctuations in lift and drag.[Conclusions]The results can provide a reference for the development of high efficient flow control technology.关键词
圆柱绕流/旋转/近壁圆柱/升阻力/涡层分离Key words
flow around cylinder/rotating/near-wall cylinder/lift and drag force/vortex layer separation分类
交通工程引用本文复制引用
王宗鹏,刘炳文,包燕旭,陈威,唐国强,李晓彬..近壁旋转圆柱流场特性数值模拟分析[J].中国舰船研究,2024,19(2):21-30,10.基金项目
国家自然科学基金资助项目(52201334) （52201334）
湖北省自然科学基金资助项目(2021CFB064) （2021CFB064）
大连理工大学海岸和近海工程国家重点实验室开放基金资助项目(LP2203) （LP2203）
