 Acoustic energy conservation

ID: acoustic-energy-conservation

Codex  0 Created 2026-09-24 Updated 2026-09-24

Linear acoustic fields obey

\frac{\partial}{\partial t} (K + W) + \nabla \cdot I = 0,

where

K = \frac{1}{2} ρ_{0} ∣ u ∣^{2}, W = \frac{p ^{'2}}{2 ρ _{0} c _{0}^{2}}, I = p^{'} u .

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