Reverse Design of Ultrasonic Absorptive Coating for the Stabilization of Mack Modes

What is it about?

In a high-speed boundary layer on a smooth flat plate or a sharp cone at zero angle-attack, Mack first mode or second mode rules the disturbances’ evolution to transition. We propose for the first time a reverse design strategy to determine the parameters for a Ultrasonic Absorptive Coating composed of slits to stabilize disturbances across a wide frequency range by taking into account the first mode and the second mode together.

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