Distributed Fluidic Control Method for Alleviating Rapid Movement of Shock Train

What is it about?

A distributed fluidic control method is proposed to alleviate the rapid forward movement of a shock train in a conventional rectangular isolator with incident shocks. The method combines distributed slot injections at the isolator walls and boundary-layer suctions at the corners of the downstream part of the isolator through return pipes. In the cases with the control method, a series of weak compression waves was formed at the shock train head, which pre-compressed the main stream gradually and reduced the adverse pressure gradient at the shock train head. Thus, the adverse pressure gradient was improved effectively by the fluidic control method, which effectively suppressed the jumping movement of the shock train.

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