NASA Technical Reports Server (NTRS) : Coupled pdf

NASA Technical Reports Server (NTRS) : Coupled

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A general three dimensional variational principle is obtained for the motion of an acoustic field enclosed in a rigid or flexible container by the method of canonical decomposition applied to a modified form of the wave equation in the displacement potential. The general principle is specialized to a mixed two-field principle that contains the fluid displacement potential and pressure as independent fields. Semidiscrete finite element equations of motion based on this principle are derived and sample cases are given

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 11/1/1991
• Year: 1991
• Book Topics/Themes: NASA Technical Reports Server (NTRS), ACOUSTICS, FINITE ELEMENT METHOD, FLUID PRESSURE, PRESSURE DISTRIBUTION, SOUND FIELDS, VARIATIONAL PRINCIPLES, WAVE EQUATIONS, DECOMPOSITION, DISPLACEMENT, EQUATIONS OF MOTION, Felippa, Carlos A., Ohayon, Roger

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