vortices

To avoid the damage to economization coal implement resonance in running, the theory that flowing liquid causes the vibration is applied to analyse that the vortices break frequency and overfall vibration frequency should be avoided in the course of ash blow and dust removal.

为了避免锅炉省煤器在运行中产生共振引发的危害，应用流体诱发振动的原理分析了在吹灰除尘过程中应尽力避开漩涡脱落频率fw与湍流抖振频率fb的观点。

From aviation safety aspect, we study on the wake vortices real time detection and forecast technology not only can improve the capacity of aviation, in urgent condition, it have significant meaning for air force, navy aviation arms, carrier plane when fast landing and taking-off.

从航空安全的角度看，研究尾流的实时探测和预报技术不仅能够提高民用机场的运力，还对应急条件下空军、海军航空兵和舰载飞机的快速起降具有重要意义。

The formation and development of these horseshoe vortices were studied and compared.

对这四种马蹄形涡的形成及发展进行了研究和比较。