Acoustic energy and momentum in a moving medium

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Various wave energy and wave momentum conservation laws are established by analyzing the analogy between the propagation of sound in a nonhomogeneous potential flow and the propagation of a scalar field in curved space-time. The acoustic energy conservation law due to Blokhintsev is analyzed as a result of the conservation of a mixed covariant and contravariant energy-momentum tensor. This is while the relative energy between the wave and mean flow appears as the covariant conservation of the doubly contravariant form of the same energy-momentum tensor.

Original languageEnglish (US)
Pages (from-to)1341-1350
Number of pages10
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Issue number1 B
StatePublished - Jul 2000

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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