Abstract
A three-dimensional plasma excitation model based on the phenomenological model was proposed and used as an excitation source of the jet. The large - eddy simulation method was used to simulate the flow field of a rectangular turbulent jet. The position deviation of the large eddy structures in the simulated flow field is within 8% compared with the experimental data. The model can accurately reflect the vortices distribution of the flow field and has a good accuracy. The variation trend of jet vortices is surfaces and vortices field is studied under different excitation voltages, which proves that the stream wise vortex is the key to the influence of the plasma exciter on the jet. The maximum value of velocity and vortices in the flow field enlarge with the voltage increasing while the turbulent position of the jet advances significantly, and the vortex shedding strength increases. The jet mixing characteristics are significantly enhanced.
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