涡旋脱落

绕圆柱非定常周期性涡旋脱落的数值模拟

Numerical simulation of unsteady periodic vortex shedding from a circular cylinder

在低氧碳比下，火焰由于组分浓度不均而产生不稳定传热，引发较高频率的涡旋脱落过程，从而诱发火焰振荡，产生高幅值的压力波动和火焰噪声。

The unsteady heat transfer caused by the uniform component concentration in flame with low [ O / C ] ratio results in the vortex shedding with high amplitude , which induces the flame pulse and generates pressure fluctuations and flame noise with high amplitude .

本文采用流场显示方法研究单圆柱在非定常流动中的涡旋脱落规律。

By using visualisation method , the authors investigated the unsteady flow passing a circular cylinder .

混合对流绕圆柱涡旋脱落及对传热影响的数值研究

Numerical Study of the Vortex Shedding from a Circular Cylinder and Its Effects on the Heat Transfer of Mixed Convection

在该流动实验中，尾迹形成的涡旋脱落机制比边界层形成的涡量向外扩散形成涡旋的机制能够形成更多的、更强的、凝聚性更好的涡旋结构。

The conclusions are as follows , the vortexes formed by the wake 's falling off mechanism are more than those by the boundary-layer in quantity , stronger in power and compacter in structure ;

在结构固有频率附近，通过分析发现横向有限应变会产生较大影响。并发现相对涡旋脱落频率，涡旋脱落载荷的振幅影响更大。

The results show that transverse finite strain makes a great influence on the structural responses nearby the basic frequency of TLP , in which the amplitude of vortex-shedding load may have greater influence than that of the vortex-shedding frequency .