Abstract
This paper presents results of experimental and analytic efforts on the filamentary transversal pulse discharge application for mixing intensification in high-speed airflow. At present, the plasma of electrical discharges in airflow is considered as a quite promising method for flow/flight control and combustion enhancement. In the case of combustion in a high-speed flow several important problems should be solved: fuel ignition by direct heating/active radicals deposition/flow structure modification, mixing in non-premixed flow, flame-holding, etc. Preliminary analysis has shown that the short-pulse repetitive transversal electric discharge is one of the most prospective solutions for the duct with circular cross-section. On the other hand the properties of the filamentary plasma are not well studied under such specific conditions. The effect of fast turbulent expansion of the post-discharge channel in high-speed flow was observed experimentally. The mechanism of the phenomena was described theoretically for quiescent ambient conditions. In this paper it is supposed that effect of fast turbulent expansion of the post-discharge channel is effective for an acceleration of mixing in the non-premixed multi-component flow.
Published Version
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