Vortex Shedding Frequency Scaling of Coherent Structures Induced by a Plasma Actuator

What is it about?

The coherent vortex structures which are related to the vertical exchange of momentum and play an important role in improving the control effect of flow control are studied systematically using a particle imaging velocimetry system. It is the first time that the non-dimensional Strouhal number based on the vortex shedding frequency, vortex propagation speed and streamwise vortex spacing, is proposed, which lays a foundation for promoting the numerical simulation model of the plasma actuator and revealing the controlling mechanism.

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