Group velocity of the acoustic eigen-modes in sonic crystals
classification
⚛️ physics.class-ph
physics.gen-ph
keywords
velocitycrystalseigen-modesgroupsonicacousticenergyaveraged
read the original abstract
In this brief report, the group velocity of the eigen-modes in sonic crystals is derived, and shown to equal the averaged energy velocity of the eigen-modes. How the group velocity can be used to describe acoustic energy flows in sonic crystals is discussed.
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