Claude boutin investigates sound propagation in airsaturated rigid porous media, which generally have frequencydependent properties e. The topic of flow resistivity is presented in chapter 2. Propagation of sound in the vicinity of rigid porous interfaces a dissertation submitted to the faculty of purdue university by hongdan tao in partial fulfillment of the requirements for the degree of doctor of philosophy december 20 purdue university west lafayette, indiana. For example, biot6 proposed that, in a biconnected liquidsolid mixture, there are typically three sound modes.
The wave propagation of porous media including the. Sound propagation in flexible, porous media william warner lang jr. Transient acoustic wave propagation in porous media. Propagation of sound in the vicinity of rigid porous interfaces. Introduction the dynamic response of porous media is of interest in various areas of engin eering and physics.
Nonlocal maxwellian theory of sound propagation in fluidsaturated rigidframed porous media checking the theory in a simple 2d periodic geometry. Sound propagation in cylindrical tubes and porous materials having cylindrical. Theory of sound propagation in superfluidfilled porous media. The first edition of propagation of sound in porous media introduced the basic theory of acoustics and the related techniques. Because of the high potential of the porous media in sound absorption, porous media is thoroughly studied in the previous decades4, 5. Part of thephysics commons this dissertation is brought to you for free and open access by the iowa state university capstones, theses and dissertations at iowa state university digital. Propagation of sound waves in a cylindrical tube filled with.
The wave propagation of porous media including the electrokinetic effect to biots theory. Mechanics of deformation and acoustic propagation in porous media. Propagation of sound in porous media modelling sound absorbing materials, 2nd edition contents 1 plane waves in isotropic fluids and solids. Propagation of sound in porous media download ebook pdf. Acoustic propagation in porous media with internal mean flow. Generalized theory of acoustic propagation in porous dissipative media m. The first edition of this book is considered the bible of this topic. The experimental method was essentially the same as reported earlier swenson et al. Analysis of nonlinear isentropic sound wavepropagation in a. Nonlocal maxwellian theory of sound propagation in fluid. They have served as rigorous and formal foundations to study acoustic wave propagation in saturated porous media.
On wave propagation in saturated and partially saturated. The sound propagation properties of two airfilled granular materials. Biot shell development company, houston 1, texm received november 3, 1961 the theory of acoustic propagation in porous media is extended to include anisotropy, viscoelasticity, and solid dissipation. Collating musthave information for engineers working in sound and vibration, propagation of sound in porous media, 2 nd edition offers an indisputable reference to a diverse audience. Lowfrequency sound wave parameter measurement in gravels. It is shown that the main parameters governing the propagation of sound waves are shear wave number, reduced. Propagation of sound waves in a cylindrical tube filled with a porous medium. Mechanics of deformation and acoustic propagation in porous media m. The study focuses on sound propagation examiningthrough the homogenization method of periodic mediasituations of single. Suffice it to say that there is no other published treatise that approaches the depth of treatment offered by this book. Propagation of sound in porous media wiley online books.
One one important application of wave propagation is the characterisation of materials. This option allows users to search by publication, volume and page selecting this option will search the current publication in context. Pdf propagation of sound waves in a cylindrical tube filled with. Among the various mechanisms related to attenuation and dispersion, the biot and squirt. Oct 27, 2009 the first edition of propagation of sound in porous media introduced the basic theory of acoustics and the related techniques. Iowa state college follow this and additional works at. Two porous columns are used in the wave experiments. Theory of sound propagation in superfluidfilled porous. Research and development in sound absorption has however progressed significantly since the first edition, and the models and methods described, at the time highly technical and specialized, have since become main stream. Sound propagation in lightmodulated carbon nanosponge.
This book has grown out of the research activities of the author in the fields of sound propagation in porous media and modelling of acoustic materials. In most cases, the porous media is considered as uniform. The application of porous media in sound fields is a widely applied measure for noise mitigation. The study focuses on sound propagation examiningthrough the homogenization method of periodic mediasituations of single porosity. Isentropic sound waves propagation in a tube filled with a. Propagation of sound waves in a cylindrical tube filled.
Pdf wave propagation in porous materials researchgate. Finally, we present an analysis of wave propagation in fractured porous media saturated by two immiscible fluids. Blot shell development company, houston, texas received august 18, 1961 a unified treatment of the mechanics of deformation and acoustic propagation in porous media is presented, and some new results and generalizations are derived. Generalized theory of acoustic propagation in porous. Sound is a sequence of waves of pressure, which propagates through compressible media such as air or water or solid. It is defined as the ratio of void pores and the total volume. It is shown that the five main parameters governing the. Analysis of boundary element methods for wave propagation in. Modelling sound absorbing materials 2e, noureddine atalla. It is assumed that the reader has a background of advanced calculus, including an introduction to differential equations, complex variables and matrix. Propagation of sound in porous media semantic scholar. Pdf biot theory of sound propagation in porous materials. The problem of a sound wave s propagation in a stationary. The theory of sound propagation in macroscopically isotropic and homogeneous porous media saturated with superfluid 4hesocalled he ii has been developed neglecting all damping processes.
A parallelfibre model is presented here, describing sound propagation in rigidframed porous materials with internal mean fluid flow. Journal of porous media 126, 537548 2009 propagation of sound waves in a cylindrical tube filled with a porous medium hamzeh m. Chapters deal with sound propagation of plane waves in solids and fluids, and the topics of acoustic impedance and reflection coefficient are given a large emphasis. The case when the normal fluid component is locked inside a porous medium by viscous forces is investigated in detail. Isentropic sound waves propagation in a tube filled with a porous media h. Nonlinear biot waves in porous media with application to. Transient acoustic wave propagation in porous media 3. Sound propagation in liquidsolid mixtures has been studied extensively. A theory of sound waves propagation in porous media that includes the nonlinear effects of forchheimer type with nonzero radial velocity effects is laid out utilizing variational solutions technique. The specimen ref 1 and ref 2 were printed using the same cadfile. Article pdf available in journal of porous media 126.
The thermal exchanges between the frame and the fluid, and the behaviour of the bulk modulus of the fluid, are described in this simple context. Dwairi2 1 mechanical engineeringdepartment, faculty ofand technology, the university jordan, 11942 amman, jordan. Modelling sound absorbing materials, second edition. Duwairi abstracta rigid frame, cylindrical capillary theory of sound propagation in porous media that includes the nonlinear effects of the forchheimer type is laid out by using variational solutions. Modelling sound absorbing materials, second edition jean f. Particular emphasis is placed on the relationship between the full biotallard j. Dwairi2 1 mechanical engineeringdepartment, faculty ofand technology, the university jordan, 11942.
In this chapter, acoustic wave propagation in porous media is studied in the. The model predicts that the acoustic attenuation, as well as the speed of sound, depends on the frequency and elastic constants of the porous material, as well as. Underground nuclear explosions generate shock waves propa gating through the porous medium surrounding the blast. Design, experimental and numerical characterization of 3dprinted.
Abstract this paper deals with the acoustical behavior of a rigid porous material. Design, experimental and numerical characterization of. The topics of effective density, and of tortuosity, are presented. Chapter 4 deals with sound propagation in porous materials having cylindrical pores. Selecting this option will search all publications across the scitation platform selecting this option will search all publications for the publishersociety in context. Borthb aengineer research and development center construction engineering research laboratory erdccerl p. Research and development in sound absorption has however progressed significantly since the first edition, and the. This paper investigates how the regime quasistatic, transient, out of equilibrium of the phenomena occurring at pores scale determine the nature of the nonlocal effectin time andor spaceinvolved in the macroscopic behavior of a porous medium. Propagation of sound in porous media ebook, pdf atalla, noureddine als download.
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