标题： 立方体驱动腔中的稳态-振荡过渡的实验观察 显示英文标题

标题： Experimental observation of the steady - oscillatory transition in a cubic lid-driven cavity

摘要： 粒子图像测速技术被应用于立方体中的盖驱动流动，以验证在比以往观察到的更低雷诺数下的稳态-振荡转变的数值预测。 实验结果与数值模拟一致，表明在中平面处存在大振幅振荡运动叠加在基本准二维流动之上。 获得了临界雷诺数和出现振荡频率的值以及振荡幅度的空间分布的良好一致性。 显示英文摘要

摘要： Particle image velocimetry is applied to the lid-driven flow in a cube to validate the numerical prediction of steady - oscillatory transition at lower than ever observed Reynolds number. Experimental results agree with the numerical simulation demonstrating large amplitude oscillatory motion overlaying the base quasi-two-dimensional flow in the mid-plane. A good agreement in the values of critical Reynolds number and frequency of the appearing oscillations, as well as similar spatial distributions of the oscillations amplitude are obtained.