Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110

Volumes:
Volumen 47, 2020 Volumen 46, 2019 Volumen 45, 2018 Volumen 44, 2017 Volumen 43, 2016 Volumen 42, 2015 Volumen 41, 2014 Volumen 40, 2013 Volumen 39, 2012 Volumen 38, 2011 Volumen 37, 2010 Volumen 36, 2009 Volumen 35, 2008 Volumen 34, 2007 Volumen 33, 2006 Volumen 32, 2005 Volumen 31, 2004 Volumen 30, 2003 Volumen 29, 2002 Volumen 28, 2001 Volumen 27, 2000 Volumen 26, 1999 Volumen 25, 1998 Volumen 24, 1997 Volumen 23, 1996 Volumen 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v33.i2.50
pages 175-185

Effect of Properties of Alveolar Walls on Sound Velocity in Pulmonary Parenchyma

Valery Oliynik
Institute of Hydromechanics of National Academy of Sciences of Ukraine

ABSTRAKT

An acoustic model of parenchyma is offered, modified by the allowance for elastic properties of alveolar walls, transpulmonary pressure and surface tension forces acting on the gas-tissue interface. The problem of acoustic modeling of the lung tissue is reduced to considering an individual spherical bubble with a supported surface pulsing in an infinite liquid. It is proved that the basic role in the alveole's surface reinforcement is played by the longitudinal rigidity of its walls. A calculated increase of sound velocity in mammalian parenchyma caused by the alveole reinforcement does not exceed 20 %. It is shown that the reinforcement influences properties of the lungs most strongly in large mammals, which alveoles contain the greater share of elastin and collagen. Comparing of theoretical data with the experimental ones has shown a satisfactory agreement between them.


Articles with similar content:

Thermal Dispersion and Dissipation of a Sound in Concentrated Dispersion Liquid and Liquid-Gas Media
International Journal of Fluid Mechanics Research, Vol.30, 2003, issue 4
Valery Oliynik
Analysis of the Stability in Large of a Sampled-Data System with Nonlinear Continuous Part by Considering an Approximate Nonlinear Model
Journal of Automation and Information Sciences, Vol.32, 2000, issue 2
Anatoliy I. Korshunov, Andrey A. Korshunov
MODEL OF ANISOTROPIC ELASTOPLASTICITY IN FINITE DEFORMATIONS ALLOWING FOR THE EVOLUTION OF THE SYMMETRY GROUP
Nanoscience and Technology: An International Journal, Vol.6, 2015, issue 2
Mario Fagone, Massimo Cuomo
Flow of Conducting Liquid Caused by a Rotating Magnetic Field
International Journal of Fluid Mechanics Research, Vol.28, 2001, issue 1&2
V. P. Shamota
Genome Instability in the Context of Chromatin Structure and Fragile Sites
Critical Reviews™ in Eukaryotic Gene Expression, Vol.20, 2010, issue 3
Eva Bartova, Gabriela Galiova, Sona Legartova, Alzbeta Jugova, Lenka Stixova, Stanislav Kozubek