Acoustic resonances in cylinder bundles oscillating in a compressibile fluid

Conference · Sat Dec 01 00:00:00 EST 1984

OSTI ID:5716428

Lin, W H; Raptis, A C

This paper deals with an analytical study on acoustic resonances of elastic oscillations of a group of parallel, circular, thin cylinders in an unbounded volume of barotropic, compressible, inviscid fluid. The perturbed motion of the fluid is assumed due entirely to the flexural oscillations of the cylinders. The motion of the fluid disturbances is first formulated in a three-dimensional wave form and then casted into a two-dimensional Helmholtz equation for the harmonic motion in time and in axial space. The acoustic motion in the fluid and the elastic motion in the cylinders are solved simultaneously. Acoustic resonances were approximately determined from the secular (eigenvalue) equation by the method of successive iteration with the use of digital computers for a given set of the fluid properties and the cylinders' geometry and properties. Effects of the flexural wavenumber and the configuration of and the spacing between the cylinders on the acoustic resonances were thoroughly investigated.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5716428
• Report Number(s): CONF-850648-1; ON: DE85004066
• Resource Relation: Conference: Symposium on fluid/structure interaction, New Orleans, LA, USA, 23 Jun 1985; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

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