Control of Reflected Waves with Acoustic Metasurfaces for Hypersonic Boundary-Layer Stabilization

What is it about?

Stabilization of the Mack second mode is of great significance to control of hypersonic boundary layer transitions. We design for the first time a reflection-controlled metasurface that can restrain Mack second mode instability. Rather than traditional absorptive mechanisms, this metasurface breaks the structures of Mack second mode and stablize the boundary layer.

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