Accession Number : ADA020099

Title :   Finite Amplitude Effects in Rectangular Cavities with Perturbed Boundaries.

Descriptive Note : Master's thesis,


Personal Author(s) : Kilmer,Milo Jethroe , II

Report Date : DEC 1975

Pagination or Media Count : 44

Abstract : The effects of boundary perturbations on finite-amplitude acoustical standing waves in rectangular, rigid-walled cavities were investigated using non-linear theory. When a high amplitude standing wave of frequency omega is generated in a cavity, non-linear effects will cause a stimulation of certain normal modes whose resonance frequencies are integer multiples of omega. There could be excitation of other normal modes, not belonging to the family of the driven mode. The purpose of this research was to investigate the possibility that deviations from the idealized geometry could account for these observations.

Descriptors :   *Fluid flow, *Cavities, *Acoustic fields, Standing waves, Perturbations, Rectangular bodies, Rigidity, Nonlinear analysis, Resonance, Frequency, Boundaries, Theses

Subject Categories : Acoustics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE