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• 15:29, 16 March 2026 Nian talk contribs created page Acoustic theory (Created page with "Category:Compressible flow Category:Unsteady waves Category:Inviscid flow __TOC__ \section{Acoustic Theory} \noindent In the following we are going to derive the linear acoustic wave equation starting from the continuity and momentum equations on non-conservation differential form. The equations are repeated here for convenience.\\ \[\dfrac{D\rho}{Dt}+\rho(\nabla\cdot\mathbf{v})=0\] \[\rho\dfrac{D\mathbf{v}}{Dt}+\nabla p=0\]\\ \noindent Remember that $...")