绕横向振动圆柱分离流动的数值研究  

NUMERICAL STUDY OF SEPARATED FLOW AROUND A TRANSVERSE VIBRATING CIRCULAR CYLINDER

作　　者：凌国平[1] 

机构地区：[1]苏州大学数学科学学院

出　　处：《苏州大学学报（自然科学版）》1995年第4期4-11,共8页Journal of Soochow University(Natural Science Edition)

摘　　要：本文用由作者提出并发展的一种基于区域分解思想.综合了解N—S方程的有限差分法及涡法各自优点的新数值方法,研究了均匀流绕横向振动圆柱的分离流动,考察了圆柱振动对涡旋脱落,升力,阻力等的影响.成功地模拟了“锁定”这一重要的液固相互作用的非线性现象。计算结果与国外实验结果和其他计算结果符合较好。A new numerical model, proposed and developed by the authors, which is based on domain decomposition and is the hybrid combination of finite difference method and vonex method, is used for calculating the separated flow around a transverse vibrating circular cylinder in uniform flow. The effects of cylinder vibration on the vortex shedding, lift force and drag force are examined. The lock in/on, the important non - linear phenomena in fluid and solid coupling, is simulated successfully. The calculated results are agreed well with the experiments and other numerical results.

关 键 词：圆柱 振动 海洋工程 近海结构 流体动力载荷 

分 类 号：P753[交通运输工程—港口、海岸及近海工程]