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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v29.i6.70
18 pages

Characteristics of Normal Waves in Elastic-Fluid Cylindrical Waveguide

G. L. Komissarova
S. P. Timoshenko Institute of Mechanics of National Academy of Sciences of Ukraine, Kyiv, Ukraine

Краткое описание

Properties of normal waves in the thin-walled elastic cylinder filled with an ideal liquid are considered. The analysis is carried out in a wide range of frequencies. To describe the wave field in the elastic cylinder the complete set of equations of the dynamic theory of elasticity is used. It allows to study comprehensively the effects of interaction between waves in an elastic body and liquid. The basic attention is given to the cases concerning thin cylinders. The arrangement of numerical calculation data is carried out on the basis of known properties of some partial subsystems. Manifestation of the interaction effects and physical properties of normal waves in compound waveguide become sufficiently informative when the empty elastic cylinder and cylindrical acoustic waveguides with soft or rigid external boundaries as partial subsystems are chosen. Using the soft boundary model is justified in case of a thin-walled elastic cylinder and concerning low frequencies. At increase of rigidity of the cylinder or increase of frequency the waveguide with rigid wall is more suitable as a partial subsystem. The detailed analysis of the kinematic and power characteristics of normal waves is given. Their change depending on geometrical and physical parameters shows the role of the effects of elastic-liquid interaction in compound waveguides. Special attention is given to the lowest normal waves having the special properties and being most strongly the subject of the influence of the interaction between the solid and fluid parts of the waveguides.


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