基于高雷诺数的并联双圆柱绕流研究
发布时间：2018-08-06 18:57
【摘要】：文章采用基于边界瞬时涡量守候的拉格朗日方法(IVCBC),结合并列双圆柱的特点,建立了双圆柱绕流数值计算模型。对高雷诺数下Re=6×10~4,间隙率为T/D=1.1~7的并联圆柱双圆柱二维绕流特性进行了研究。提出了双圆柱间隙中点的速度区别宽窄尾流的新方法。分别讨论了流体力系数随间距增加的特点,脉动流体力的特点,尾流特征以及斯托哈尔数特征。研究发现:区别宽窄尾流的新方法是可靠的;在双圆柱尾流附近有五种尾流模型存在;同时发现了在宽窄尾流的频率,存在一个中间频率。
[Abstract]:In this paper, the Lagrangian method based on the instantaneous boundary vorticity observation is used to establish a numerical model for the flow around a double cylinder, combining with the characteristics of the parallel two cylinders. The two-dimensional flow characteristics of two parallel cylinders with Re=6 脳 10 ~ (4) and clearance ratio of T/D=1.1~7 at high Reynolds number are studied. A new method for differentiating wide and narrow wake at the midpoint of double cylindrical clearance is presented. The characteristics of flow force coefficient increasing with spacing, pulsating flow force, wake flow and Stohar number are discussed respectively. It is found that the new method to distinguish wide and narrow wake is reliable, that there are five kinds of wake models near the wake of two cylinders, and that there is an intermediate frequency in the frequency of wide and narrow wake.
【作者单位】： 大连理工大学工业装备与结构分析国家重点实验室;
【基金】：973资助项目(2013CB036101) 国家自然科学基金重点资助项目(51639003);国家自然科学基金项目(51679037,51279030) 高技术船舶专项资助
【分类号】：O357.5
[Abstract]:In this paper, the Lagrangian method based on the instantaneous boundary vorticity observation is used to establish a numerical model for the flow around a double cylinder, combining with the characteristics of the parallel two cylinders. The two-dimensional flow characteristics of two parallel cylinders with Re=6 脳 10 ~ (4) and clearance ratio of T/D=1.1~7 at high Reynolds number are studied. A new method for differentiating wide and narrow wake at the midpoint of double cylindrical clearance is presented. The characteristics of flow force coefficient increasing with spacing, pulsating flow force, wake flow and Stohar number are discussed respectively. It is found that the new method to distinguish wide and narrow wake is reliable, that there are five kinds of wake models near the wake of two cylinders, and that there is an intermediate frequency in the frequency of wide and narrow wake.
【作者单位】： 大连理工大学工业装备与结构分析国家重点实验室;
【基金】：973资助项目(2013CB036101) 国家自然科学基金重点资助项目(51639003);国家自然科学基金项目(51679037,51279030) 高技术船舶专项资助
【分类号】：O357.5
【相似文献】
相关期刊论文 前10条
1 张成健;苏中地;张洪军;邵传平;;并列旋转双圆柱流动特性的数值模拟[J];水动力学研究与进展A辑;2009年04期
2 张鹏飞;苏中地;广林端;李燕玲;;上游小圆柱对并列双圆柱尾流的影响[J];中国计量学院学报;2012年03期
3 徐有恒,黄东群;双圆柱缝隙中的不稳定流[J];水动力学研究与进展(A辑);1992年01期
4 王文华;王言英;;双圆柱的入水参数对水作用力的影响[J];水动力学研究与进展A辑;2010年01期
5 刘松,符松;串列双圆柱绕流问题的数值模拟[J];计算力学学报;2000年03期
6 顾志福,孙天风,贺德馨,张亮亮;大湍流度高雷诺数时并列双圆柱的平均和脉动压力分布[J];力学学报;1992年05期
7 姚熊亮;戴绍仕;王国忠;;均匀流场中串列双圆柱水动力特性的数值实验研究[J];哈尔滨工程大学学报;2006年05期
8 郭明e，
本文编号：2168682
本文链接：https://www.wllwen.com/kejilunwen/lxlw/2168682.html
