Fluidic Injection Effects on Mixing Characteristics of Supersonic Nozzle
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Abstract
This work uses numerical methods to evaluate the impact of fluidic injection on the mixing characteristics of a supersonic jet. Two fluidic injectors of 2 mm diameter kept diametrically opposite to each other and were located near to the exit of supersonic nozzle. To study the impact of injection for the correct expansion flow state of supersonic nozzle, the results obtained were contrasted with the nozzle in the absence of injector. To investigate the flow impacts, total pressure measurements were considered to plot the radial total pressure profiles and centerline total pressure decay profiles. The Mach number contours along and radial directions of the jet were also taken to understand the jet flow development of the proposed case. The results ensure that the fluidic injection inside the supersonic nozzle has a significant effect in improving the jet mixing.
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