Excellence in Research and Innovation for Humanity

Steven Hulshoff

Publications

1

Publications

1
8047
Numerical Investigation of Instabilities in Free Shear Layer Produced by NS-DBD Actuator
Abstract:
A numerical investigation of the effects of nanosecond barrier discharge on the stability of a two-dimensional free shear layer is performed. The computations are carried out using a compressible Navier-Stokes algorithm coupled with a thermodynamic model of the discharge. The results show that significant increases in the shear layer-s momentum thickness and Reynolds stresses occur due to actuation. Dependence on both frequency and amplitude of actuation are considered, and a comparison is made of the computed growth rates with those predicted by linear stability theory. Amplitude and frequency ranges for the efficient promotion of shear-layer instabilities are identified.
Keywords:
NS-DBD, plasma, actuator, flow control, instability, shear layer