Relevant bibliographies by topics / Speed of sound wave propagation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Speed of sound wave propagation'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Speed of sound wave propagation"

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Hawwa, Muhammad A. "Sound Propagation in a Duct with Wall Corrugations Having Square-Wave Profiles." Mathematical Problems in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/516982.

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Acoustic wave propagation in ducts with rigid walls having square-wave wall corrugations is considered in the context of a perturbation formulation. Using the ratio of wall corrugation amplitude to the mean duct half width, a small parameter is defined and a two levels of approximations are obtained. The first-order solution produces an analytical description of the pressure field inside the duct. The second-order solution yields an analytical estimate of the phase speed of waves transmitting through the duct. The effect of wall corrugation density on acoustic impedance and wave speeds is high
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Harutyunyan, V. G., A. R. Aramyan, G. R. Aramyan, et al. "Study of the Development of Sound Waves Generated by Shock Waves." Journal of Physics: Conference Series 2657, no. 1 (2023): 012008. http://dx.doi.org/10.1088/1742-6596/2657/1/012008.

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Abstract The work is devoted to studies of the time development of sound waves generated by shock waves. It is shown that the shock wave, propagating, generates an acoustic wave whose frequency changes over time. That change is related to the change in the speed of propagation of the shock wave.
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Le, Thi Thanh Giang, Kyeong Sik Jang, Kwan-Sup Lee, and Jaiyoung Ryu. "Numerical Investigation of Aerodynamic Drag and Pressure Waves in Hyperloop Systems." Mathematics 8, no. 11 (2020): 1973. http://dx.doi.org/10.3390/math8111973.

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Hyperloop is a new, alternative, very high-speed mode of transport wherein Hyperloop pods (or capsules) transport cargo and passengers at very high speeds in a near-vacuum tube. Such high-speed operations, however, cause a large aerodynamic drag. This study investigates the effects of pod speed, blockage ratio (BR), tube pressure, and pod length on the drag and drag coefficient of a Hyperloop. To study the compressibility of air when the pod is operating in a tube, the effect of pressure waves in terms of propagation speed and magnitude are investigated based on normal shockwave theories. To r
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Harutyunyan, G. A., A. A. Muradyan, A. R. Aramyan, et al. "Analysis of shock wave propagation in the atmosphere through generated sound waves." Journal of Instrumentation 19, no. 06 (2024): C06012. http://dx.doi.org/10.1088/1748-0221/19/06/c06012.

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Abstract The paper presents the results of studies of shock waves propagating in the atmosphere. These results were obtained by recording sound waves generated by a shock wave. It has been shown that it takes approximately two seconds for a shock wave to form. The frequency of the sound wave generated by the shock wave depends on the speed of propagation of the shock wave. It was found that the shock wave accelerates as it propagates upward. This phenomenon can be used as a method for determining the velocities of shock waves or supersonic moving bodies.
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Godin, Oleg A. "Underwater sound propagation over a layered seabed with weak shear rigidity." Journal of the Acoustical Society of America 157, no. 1 (2025): 314–27. https://doi.org/10.1121/10.0034864.

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The shear wave speed is often small compared to the compressional wave speed in the top part of the seabed, where acoustic normal modes penetrate. In sediments with weak but finite shear rigidity, the strongest conversion from compressional to shear waves occurs at interfaces within the sediment. Shear wave generation at such interfaces and interference within sediment layers lead to first-order perturbations in the normal mode phase speed and contributions to sound attenuation, which vary rapidly with frequency. Weak shear rigidity is shown to lead to unexpectedly strong mode group speed pert
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AVITAL, ELDAD J., RICARDO E. MUSAFIR, and THEODOSIOS KORAKIANITIS. "NONLINEAR PROPAGATION OF SOUND EMITTED BY HIGH SPEED WAVE PACKETS." Journal of Computational Acoustics 21, no. 02 (2013): 1250027. http://dx.doi.org/10.1142/s0218396x12500270.

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Jet's sound-field emitted by a large scale source modeled as a wave packet is considered. Attention is given to nonlinear propagation effects caused by the source's supersonic Mach number and high amplitude. The approach of the Westervelt equation is adapted to derive a new set of weakly nonlinear sound propagation equations. An optimized Lax–Wendorff scheme is proposed for the newly derived equations. It is shown that these equations can be simulated using a time step close to the CFL limit even for high amplitudes unlike the conventional finite-difference simulation approach of the Westervel
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Mulyaningsih, Rejeki Sri. "Effect of Amplitude and Frequency on the Speed of Sound Waves in Air and Water Using PhET Simulation." Jurnal Pendidikan dan Ilmu Fisika 4, no. 1 (2024): 40. http://dx.doi.org/10.52434/jpif.v4i1.3501.

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Sound waves can occur not only in solid medium but also in air and water mediums. The effect of amplitude and frequency on the speed of sound waves differs between air and water mediums. The speed of sound waves cannot be seen with the naked eye. A virtual lab is needed to determine the speed of sound wave propagation. The purpose of this study is to determine the effect of amplitude and frequency on the speed of sound waves in air and water medium. The research method used is a quantitative method by conducting experiments online using the PhET application. PhET is used because it can carry o
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GRIGORIEVA, NATALIE S. "THE EFFECT OF OCEAN CURRENT ON SOUND PROPAGATION." Journal of Computational Acoustics 02, no. 04 (1994): 441–51. http://dx.doi.org/10.1142/s0218396x94000257.

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The effect of medium motion on sound propagation in the ocean is investigated. In a moving fluid, the sound propagation is described by a system of seven linear partial differential equations for seven unknown elements of a sound wave. These are the sound pressure, the particle oscillation velocity in a sound wave as well as the changes of medium density, its entropy, and concentration of the salt caused by passage of a sound wave. In the case of stratified moving medium, the point source field is represented in the form of a sum of quasinormal waves. If the ocean perturbed by a current is wea
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Roberts, B. "Waves in Magnetic Flux Tubes." Symposium - International Astronomical Union 142 (1990): 159–74. http://dx.doi.org/10.1017/s0074180900087891.

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The basic aspects of wave propagation in a magnetic flux tube are reviewed, with particular emphasis on the types of flux tube that occur in the solar atmosphere. Two fundamental speeds arise naturally in a description of wave propagation in a flux tube: the slow magnetoacoustic (cusp) speed cT, which is both subsonic and sub-Alfvénic, and a mean Alfvén speed ck. Both surface and body modes are supported by a tube. It is stressed that a flux tube may act as a wave guide, similar to the guidance of light by a fibre optic, or sound in an ocean layer, or seismic waves in the Earth's crust.
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Yen, R. T., Y. C. Fung, H. H. Ho, and G. Butterman. "Speed of stress wave propagation in lung." Journal of Applied Physiology 61, no. 2 (1986): 701–5. http://dx.doi.org/10.1152/jappl.1986.61.2.701.

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The speed of stress waves in the lung parenchyma was investigated to understand why, among all internal organs, the lung is the most easily injured when an animal is subjected to an impact loading. The speed of the sound is much less in the lung than that in other organs. To analyze the dynamic response of the lung to impact loading, it is necessary to know the speed of internal wave propagation. Excised lungs of the rabbit and the goat were impacted with water jet at dynamic pressure in the range of 7–35 kPa (1–5 psi) and surface velocity of 1–15 m/s. The stress wave was measured by pressure
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Dissertations / Theses on the topic "Speed of sound wave propagation"

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Tombul, Serdar. "A numerical study of the validity regimes of weak fluctuation theory for ocean acoustic propagation through random internal wave sound speed fields." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion.exe/07Mar%5FTombul.pdf.

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Thesis (M.S. in Engineering Acoustics and M.S. in Electrical Engineering)--Naval Postgraduate School, March 2007.<br>Thesis Advisor(s): John Colosi. "March 2007." Includes bibliographical references (p. 81-82 ). Also available in print.
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Maess, Matthias. "Material characterization using nonlinear wave propagation." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19311.

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Yildirim, Baran. "Acoustic Wave Analysis Using Different Wave Propagation Models." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609527/index.pdf.

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In this study in order to simulate the acoustic waves, Ray Theory and Normal Mode models are used. These methods are analyzed using MATLAB simulation tool<br>differences between two models are examined and a region with a known bottom profile and sound velocity profiles is investigated. The Ray Theory is used in acoustic systems which is the one of the applications of wave modeling. Ray theory is solved with standard Ordinary Differential Equation solvers and normal mode with finite element method. Different bottom profiles and sound velocity profiles previously taken are interpolated to form
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Berglund, Alexander, Fredrik Herbai, and Jonas Wedén. "Sound Propagation Through Walls." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-444632.

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Infrasound is undetectable by the human ear and excessive exposure may be a substantial health risk. Low frequency sound propagates through walls with minimal attenuation, making it difficult to avoid. This study interprets the results from both analytical calculations and simulations of pressure waves propagating through a wall in one dimension. The wall is thin compared to the wavelength; the model implements properties of three materials commonly used in walls. The results indicate that the geometry of the wall, most importantly the small ratio between wall width and wavelength, is the prim
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Kappel, Marcel. "Scattering effects in the sound wave propagation of instrument soundboards." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/6267/.

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In the western hemisphere, the piano is one of the most important instruments. While its evolution lasted for more than three centuries, and the most important physical aspects have already been investigated, some parts in the characterization of the piano remain not well understood. Considering the pivotal piano soundboard, the effect of ribs mounted on the board exerted on the sound radiation and propagation in particular, is mostly neglected in the literature. The present investigation deals exactly with the sound wave propagation effects that emerge in the presence of an array of equally-d
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Hammar, Johan. "A Wave Expansion Method for Aeroacoustic Propagation." Licentiate thesis, KTH, Aerodynamik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-196689.

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Although it is possible to directly solve an entire flow-acoustics problem in one computation, this approach remains prohibitively large in terms of the computational resource required for most practical applications. Aeroacoustic problems are therefore usually split into two parts; one consisting of the source computation and one of the source propagation. Although both these parts entail great challenges on the computational method, in terms of accuracy and efficiency, it is still better than the direct solution alternative. The source usually consists of highly turbulent flows, which for mo
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Khalili, Nasser. "Application of Cepstral techniques to the measurement of reflection coefficients for dispersive systems." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303060.

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Muhlestein, Michael B. "Analyses of Nonlinearity Measures in High-Amplitude Sound Propagation." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3994.

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Military aircraft generate high-amplitude noise which can cause injury to attending personnel. Efforts to mitigate the effects of this noise require a detailed understanding of the propagation of the noise, which was shown previously to be nonlinear. This thesis presents an analysis of high-amplitude noise propagation, emphasizing measures used to quantify the importance of considering nonlinearity. Two measures of the importance of nonlinearity are compared. These measures are the wave steepening factor and a skewness estimate. The wave steepening factor is a measure of how much nonlinear wav
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Weng, Chenyang. "Theoretical and numerical studies of sound propagation in low-Mach-number duct flows." Doctoral thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168031.

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When sound waves propagate in a duct in the presence of turbulent flow, turbulent mixing can cause attenuation of the sound waves extra to that caused by the viscothermal effects. Experiments show that compared to the viscothermal effects, this turbulent absorption becomes the dominant contribution to the sound attenuation at sufficiently low frequencies. The mechanism of this turbulent absorption is attributed to the turbulent stress and the turbulent heat transfer acting on the coherent perturbations (including the sound waves) near the duct wall, i.e. sound-turbulence interaction. The purpo
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Fritzell, Julius. "Sound propagation modelling with applications to wind turbines." Thesis, KTH, Mekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260322.

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Wind power is a rapidly increasing resource of electrical power world-wide. With the increasing number of wind turbines installed one major concern is the noise they generate. Sometimes already built wind turbines have to be put down or down-regulated, when certain noise levels are exceeded, resulting in economical and environmental losses. Therefore, accurate sound propagation calculations would be beneficial already in a planning stage of a wind farm. A model that can account for varying wind speeds and complex terrains could therefore be of great importance when future wind farms are planne
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Books on the topic "Speed of sound wave propagation"

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Yu, Ping, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Linear and nonlinear acoustic wave propagation in the atmosphere. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1988.

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Institute for Computer Applications in Science and Engineering., ed. Numerical study of wave propagation in a non-uniform flow. ICASE, NASA Langley Research Center, 2000.

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James, William L. Effect of transverse moisture content gradients on the longitudinal propagation of sound in wood. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1986.

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Richard, W. Bruce. Propagation of sound waves in tubes of noncircular cross section. NASA, 1986.

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Marc, Deschamps, and SpringerLink (Online service), eds. Ultrasonic Wave Propagation in Non Homogeneous Media. Springer Berlin Heidelberg, 2009.

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1952-, Bernhard Robert, and United States. National Aeronautics and Space Administration., eds. An investigation of energy transmission due to flexural wave propagation in lightweight, built-up structures. Ray W. Herrick Laboratories, Purdue University, 1986.

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Center, Langley Research, ed. Sonic boom propagation codes validated by flight test. National Aeronautics and Space Administration, Langley Research Center, 1996.

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Almgren, Martir. Scale model simulation of sound propagation considering sound speed gradients and acoustic boundary layers at a rigid surface. Bibliotekets Reproservice, 1986.

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International Symposium on Long-Range Sound Propagation (4th 1990 Langley Research Center). Fourth International Symposium on Long-Range Sound Propagation: Proceedings of a symposium sponsored by the National Aeronautics and Space Administration, the University of Mississippi, and the Open University of England, and held at Langley Research Center, Hampton, Virginia, May 16-17, 1990. NASA, 1990.

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International Symposium on Long-Range Sound Propagation (6th 1994 Ottawa, Canada). Sixth International Symposium on Long-Range Sound Propagation: Proceedings of a symposium held at the Château Laurier Hotel, Ottawa, Canada, 12-14 June 1994 [and] sponsored by National Research Council, University of Mississippi, US Army Research Office. National Research Council Canada, 1994.

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Book chapters on the topic "Speed of sound wave propagation"

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Garrett, Steven L. "One-Dimensional Propagation." In Understanding Acoustics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_10.

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Abstract Having already invested in understanding both the equation of state and the hydrodynamic equations, only straightforward algebraic manipulations will be required to derive the wave equation, justify its solutions, calculate the speed of sound in fluids, and derive the expressions for acoustic intensity and the acoustic kinetic and potential energy densities of sound waves. The “machinery” developed to describe waves on strings will be sufficient to describe one-dimensional sound propagation in fluids, even though the waves on the string were transverse and the one-dimensional waves in
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Garrett, Steven L. "Reflection, Transmission, and Refraction." In Understanding Acoustics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_11.

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Abstract The behavior of one-dimensional waves propagating through media that are not homogeneous will be the focus of this chapter. We start with an examination of the behavior of planewaves impinging on a planar interface between two fluid media with different properties and then extend that analysis to multiple interfaces and to waves that impinge on such an interface from an angle that is not perpendicular to that surface. The extent of those boundaries separating regions with different acoustical properties will be much larger than the wavelength of the sound. Many cases to be examined he
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Pinkel, Robert, and Jeffrey T. Sherman. "Internal Wave Induced Fluctuations in the Oceanic Density and Sound Speed Fields." In Ocean Variability & Acoustic Propagation. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3312-8_8.

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Garrett, Steven L. "Nonlinear Acoustics." In Understanding Acoustics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_15.

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Abstract A fundamental assumption of linear acoustics is that the presence of a wave does not have an influence on the properties of the medium through which it propagates. By extension, the assumption of linearity also means that a waveform is stable since any individual wave does not interact with itself. Small modifications in the sound speed due to wave-induced fluid convection (particle velocity) and to the wave’s effect on sound speed through the equation of state can lead to effects that could not be predicted within the limitations imposed by the assumption of linearity. Although a wav
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Brekhovskikh, Leonid M., and Yury P. Lysanov. "Antiwaveguide Sound Propagation." In Springer Series on Wave Phenomena. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-07328-5_8.

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Porter, Michael B. "Modeling Sound Propagation in the Ocean." In Computational Wave Propagation. Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-2422-8_10.

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Davis, Julian L. "Sound Waves." In Wave Propagation in Solids and Fluids. Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3886-7_6.

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Tohyama, Mikio. "Vibration of String and Wave Propagation." In Sound and Signals. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20122-6_5.

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Schneider, H. G. "Average Sound Intensities in Randomly Varying Sound-Speed Structures." In Ocean Variability & Acoustic Propagation. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3312-8_22.

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Foust, Henry. "Speed of Sound in Liquids." In Shock Wave and High Pressure Phenomena. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5918-7_5.

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Conference papers on the topic "Speed of sound wave propagation"

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Awatsuji, Yasuhiro, Shun Notte, Sudheesh K. Rajput, et al. "High-speed imaging of dynamic transparent object by parallel phase-shifting digital holography." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.tu2a.5.

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The authors review recent progress in parallel phase-shifting digital holography for high-speed imaging of dynamic and transparent object. A movie of acoustic field and selective images of sound wave propagations at different frequencies were demonstrated.
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Sun, Wenbo, Haoyang Zhang, and Hang Xu. "The modulation phenomenon of sound speed and attenuation in bubbly media with dual-frequency sound wave excitation." In 2024 OES China Ocean Acoustics (COA). IEEE, 2024. http://dx.doi.org/10.1109/coa58979.2024.10723363.

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Kuprowicz, Nicholas J., John C. Petrykowski, and Paul W. Eloe. "Growth and Propagation of Acoustic Waves of Nonuniform Sound Speed Within a Plane-Walled Enclosure." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0527.

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Abstract The propagation of acoustic waves through nonuniform temperature fields may suffer distortion due to local sound speed variations. This paper considers the case of the generation and propagation of acoustic waves through a nonuniform temperature field where the spatial variations are caused by eddy current heating of a fluid layer. Numerical solutions to the variable coefficient inhomogeneous wave equation are presented for the case where the fluid is excited in the transverse direction and the adjoining walls are acoustically hard. Progressive and dispersive waves can be clearly dist
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Sharipov, Felix, and Denize Kalempa. "Sound Propagation Through a Gas in Microscale." In ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2009. http://dx.doi.org/10.1115/icnmm2009-82027.

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A sound wave propagation through a rarefied gas is investigated on the basis of the linearized kinetic equation by taking into account the influence of the receptor of sound waves on the solution of the problem. In order to do so, a plate oscillating in the normal direction to its own plane is considered as a sound wave source while a stationary one is considered as being the receptor of sound waves. The distance between the plates can be of the order of the molecular mean free path. It is assumed a fully established oscillation so that the solution of the kinetic equation depends on time harm
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Zhuang, Louise, Walter Simson, Oleksii Ostras, Dongwoon Hyun, Gianmarco Pinton, and Jeremy Dahl. "Abdominal Sound Speed Estimation Using Neural Networks Trained on Wave Propagation Physics." In 2023 IEEE International Ultrasonics Symposium (IUS). IEEE, 2023. http://dx.doi.org/10.1109/ius51837.2023.10308076.

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Nanda, Aditya, and M. Amin Karami. "One Way Sound Propagation in a Smart Fluid." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3893.

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This manuscript investigates one way sound propagation in Magnetorheological fluids (MRF) using spatio-temporal modulation of the applied magnetic field. One-way propagation of waves in a structure can have potential technological applications such as sound isolation, filtering and echo suppression. Several experimental works in the literature have shown that elastic properties of MRF’s (local speed of sound, in particular) are dependent on the applied magnetic field. Therefore, several fascinating possibilities regarding the manipulation of sound waves in MRF, by tailoring the applied magneti
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Wiercigroch, Marian, Mohsen Badiey, Jeffrey Simmen, and Alexander H. D. Cheng. "Bifurcation and Stability Analysis of Parabolic Ray Equations for Acoustic Wave Propagation in an Underwater Sound Channel." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0424.

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Abstract The non-linear dynamic behavior of acoustic wave propagation in underwater sound channel is studied by a parabolic ray theory using Munk’s sound speed profile. The Hamiltonian system of the ray trajectory is forced by a single mode sinusoidal internal wave. The amplitude and wave length of this excitation are used in a bifurcation analysis. The regions of instability are located by numerical simulations and visualized through a sequence of phase diagrams and Poincaré maps.
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Varanasi, Kripa K., and Samir A. Nayfeh. "Vibration Damping Using Low-Wave-Speed Media: Complex Wavenumber and Energy Approximations." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85452.

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Significant damping of structural vibration can be attained by coupling to the structure a low-density medium (such as a powder or foam) in which the speed of sound propagation is relatively low. We describe a set of experiments in which flexural vibration of aluminum beams over a broad frequency range is damped by introduction of a layer of lossy low-wave-speed foam. At frequencies high enough to set up standing waves through the thickness of the foam, loss factors as high as 0.05 can be obtained with a foam layer whose mass is 3.9% of that of the beam. In our prior studies [1,2], we modeled
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Shah, Suman, Paul J. Hazell, Hongxu Wang, and Juan P. Escobedo. "Shock Wave Propagation in Unidirectional CFRP at Different Orientations." In 2024 17th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/hvis2024-047.

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Abstract This paper presents the shock response of unidirectional carbon fibre reinforced polymer (UD CFRP) with two distinct fibre orientations, when subjected to plate-impact experiments. Samples of CFRP were prepared with fibres aligned at 0° and 90° relative to the direction of impact, where 0° represents fibres parallel to the impact trajectory. The study reveals the initiation and progression of a shock front within the CFRP composites. Significantly, the 0° oriented samples exhibited elevated transmitted shock wave amplitudes and velocities in comparison to the 90° samples, under identi
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Akutsu, Ryosuke, Tetsuya Kanagawa, and Yusuke Uchiyama. "Derivation of an Amplitude Equation for Weakly Nonlinear Pressure Waves of a Very High Frequency in a Compressible Liquid Containing Many Microbubbles." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4776.

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Abstract The present paper theoretically treats weakly nonlinear propagation of plane progressive waves in an initially quiescent compressible liquid containing a tremendously large number of spherical gas bubbles, focusing on the derivation of an amplitude evolution equation (i.e., nonlinear wave equation). We emphasize the following points: (i) the compressibility of the liquid phase, which has long been neglected, is considered; (ii) the wave propagates with a large phase velocity exceeding the speed of sound in pure water; (iii) bubbles are not created or annihilated. From the method of mu
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Reports on the topic "Speed of sound wave propagation"

1

Henyey, Frank S. Acoustic Propagation Through Sound Speed Heterogeneity. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada531751.

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2

Colosi, John A. An Analysis of Long-Range Acoustic Propagation Fluctuations and Upper Ocean Sound Speed Variability. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada441242.

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Colosi, John A. An Analysis of Long-Range Acoustic Propagation Fluctuations and Upper Ocean Sound Speed Variability. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada629913.

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Colosi, John A. An Analysis of Long-Range Acoustic Propagation Fluctuations and Upper Ocean Sound Speed Variability. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada625607.

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Wolfson, Michael A. Investigation of Wave Field Stability for Sound Propagation in the Structured Ocean: A Dynamical Systems Approach to Wave Propagation in Random Media. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada629635.

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Pettit, Chris, and D. Wilson. A physics-informed neural network for sound propagation in the atmospheric boundary layer. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41034.

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We describe what we believe is the first effort to develop a physics-informed neural network (PINN) to predict sound propagation through the atmospheric boundary layer. PINN is a recent innovation in the application of deep learning to simulate physics. The motivation is to combine the strengths of data-driven models and physics models, thereby producing a regularized surrogate model using less data than a purely data-driven model. In a PINN, the data-driven loss function is augmented with penalty terms for deviations from the underlying physics, e.g., a governing equation or a boundary condit
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Strassburger, Elmar. High-Speed Photographic Study of Wave Propagation and Impact Damage in Transparent Aluminum Oxynitride (AION). Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada457205.

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Ostashev, Vladimir, Michael Muhlestein, and D. Wilson. Extra-wide-angle parabolic equations in motionless and moving media. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42043.

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Wide-angle parabolic equations (WAPEs) play an important role in physics. They are derived by an expansion of a square-root pseudo-differential operator in one-way wave equations, and then solved by finite-difference techniques. In the present paper, a different approach is suggested. The starting point is an extra-wide-angle parabolic equation (EWAPE) valid for small variations of the refractive index of a medium. This equation is written in an integral form, solved by a perturbation technique, and transformed to the spectral domain. The resulting split-step spectral algorithm for the EWAPE a
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Morkun, Vladimir S., Natalia V. Morkun, and Andrey V. Pikilnyak. Augmented reality as a tool for visualization of ultrasound propagation in heterogeneous media based on the k-space method. [б. в.], 2020. http://dx.doi.org/10.31812/123456789/3757.

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For programming the AR tools, interactive objects and creating the markers, the method of fiber spaces (k-space) for modeling of ultrasonic wave propagation in an inhomogeneous medium using coarse grids, with maintaining the required accuracy was used. The algorithm and tools of augmented reality were introduced into the adaptive control system of the pulp gas phase in the iron ore flotation process using a control action on the basis of high-energy ultrasound dynamic effects generated by ultrasonic phased arrays. The tools of augmented reality based on k-space methods allow to facilitate wide
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