【摘要】 使用RANS方程求解器结合SST k-ω湍流模型对低质量比弹性支撑圆柱体在流向和横向(两向)的运动进行了数值计算,着重研究了限制流向运动与否对圆柱体横向振幅的影响。通过对不同质量比圆柱体在较大折合速度范围内的计算,得出了当质量比低于m*cri=3.5时,两向自由度的圆柱体比限制流向运动的圆柱体能产生更大的横向振幅。数值计算结果与最近物理实验结果进行了详细的比较和讨论。更多还原

【Abstract】 A two-dimensional Reynolds-averaged Navier-Stokes(RANS) code equipped with SST k-ω turbulent model is applied for elastic mounted cylinder with low mass-ratio moving under stream-wise and transverse motion.Different mass-ratios are calculated to obtain a critical mass-ratio m=3.5 below which lager transverse amplitude can be yielded for elastic mounted cylinder with two degrees of freedom rather than one degree of freedom.Numerical results are compared with recent experiment’s results in detail in the paper.更多还原