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

Oliynik, Valery

doi:10.1615/interjfluidmechres.v33.i2.50

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, when the environment vibrates, the water-air surface is not a plane. Air bubbles [27] and impurities [28] will lead to scattering, even the water quality can influence the sound velocity. According to [29], the natural frequency of vibration, f, of water in a cylindrical containment can be evaluated by equation (19).…”

Section: The Influence Of the Other Factorsmentioning

confidence: 99%

A frequency-response-based method of sound velocity measurement in an impedance tube

Wang

Thomas

Wang

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Publisher's statement:"This is an author-created, un-copyedited version of an article accepted for publication in: Measurement Science and Technology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/1361-6501/aa5ae0 " A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription.

show abstract

Section: The Influence Of the Other Factorsmentioning

confidence: 99%

A frequency-response-based method of sound velocity measurement in an impedance tube

Wang

Thomas

Wang

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…We will now discuss the relation between the speed of sound for a Biot material (30) and the speed of sound predicted by Woods' formula (1), for details see [17]. In the limit |α ∞ (ω)| → ∞, it is straightforward to show that the expression for the wave speed of the fast wave, (30), simplifies to…”

Section: Parameter Ranges Valid For Lung Parenchymamentioning

confidence: 99%

“…We now use equation (30) to demonstrate how the speed of sound varies depending on the parameters σ static and α ∞ . We use (32) for P , Q and R, and approximate the correction factor F (ω) using the Johnson model,…”

Section: Parameter Ranges Valid For Lung Parenchymamentioning

confidence: 99%

See 1 more Smart Citation

Multiscale modeling of the acoustic properties of lung parenchyma

et al. 2008

View full text Add to dashboard Cite

Lung parenchyma is a foam-like material consisting of millions of alveoli. Sound transmission through parenchyma plays an important role in the non-invasive diagnosis of many lung diseases. We model the parenchyma as a porous solid with air-filled pores and consider the Biot equations as a model for its acoustic properties. The Biot equations govern small-amplitude wave propagation in fluid-saturated porous solids, and include the effects of relative motion between the fluid and the solid frame. The Biot equations can be derived from a micro-structure model of the porous material, and the material parameters in the equations can be obtained from the solution of two independent microstructure problems, a fluid-cell problem (governed by the unsteady Stokes equations) and a solid-cell problem. We review the homogenization approach for media with periodic micro-structure, and solve a fluid-cell problem numerically for an idealized two-dimensional micro-scale geometry for a wide range of frequencies. We also discuss sound speeds in lung tissue.

show abstract

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

Cited by 2 publications

References 0 publications

A frequency-response-based method of sound velocity measurement in an impedance tube

A frequency-response-based method of sound velocity measurement in an impedance tube

Multiscale modeling of the acoustic properties of lung parenchyma

Contact Info

Product

Resources

About