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The Acoustic Bubble |  |
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The Acoustic Bubble | |
网友对The Acoustic Bubble的评论
This is the must have book if you are interested in learning about acoustic cavitation. It's getting a bit dated (first published over 10 years ago), but it is still the classic text and the one I refer to during my research. Even better is that is now being published again after being out of print for a few years.
This is a fine book about an important topic in acoustics. If the field of acoustics is like a bunch of fine wines, this is the champagne!
Acoustic bubbles have many manifestations. These include clinical ultrasound as well as ocean acoustics. It is worthwhile for someone who wishes to be an expert on one of these topics to become familiar with some other applications the study of acoustic bubbles.
The first chapter covers the fundamentals of waves, sound, and wavefronts. Of course, special attention is placed on sound in solid and liquid media. And we also learn about the generation of ultrasound, simulated sound fields, and nonlinear effects in underwater ultrasound beams.
The second chapter teaches us about bubbles. We learn about the tensile strength of liquids, so we'll know what it takes to make them cavitate. And we learn about Rayleigh collapse, so we'll know what it takes to produce decavitation. Next, we review (I hope it is a review!) fluid dynamics, and look at the problem of a rigid sphere moving through a liquid.
In the third chapter, we get to a powerful analogy to a bubble in a liquid, namely a bob of a specified mass attached to a spring. After a quick review of unforced oscillators, we get to the Minnaert frequency (the natural frequency of a spherical gas bubble in a liquid for low-amplitude simple harmonic motion). It's interesting to see if we can thus approximate the sounds of brooks, waterfalls, rainfall, or the ocean.
The next chapter gets us to a discussion of the interaction between a bubble and the sound wave that can drive it into oscillation. We still use the analogy of the bob on a spring, but now we're dealing with a driven oscillator (the author assures us that this is a better approximation that trying to predict the outcome of a horse race by assuming a spherically symmetrical horse). We learn about acoustic emissions from these bubbles, chaotic oscillations of bubbles, and so forth. We're still basically dealing with individual bubbles, of course.
The final chapter deals with the real behavior of acoustic bubble systems. That includes topics such as detection of bubbles, bubble motion and stabilization, and use of bubbles in ultrasonic surgery. And, of course, sonoluminescence, for which there is a discussion of mechanisms as well as what is now a particularly, um, hot topic, temperatures of imploding bubbles.
I enjoyed reading this book. I'll never listen to champagne the same way again.
Overall this is a decent book, and most people working in this field would benefit from much of the hard to find information contained within it. The main problem I have with the book is that the author seems to be totally unaware of who his audience is. For example, at times the author appears to be writing for someone who has never had a single physics/math course, and then one paragraph later he assumes knowledge of advanced mathematical analysis. Case in point: he has been using vector calculus for a while and then suddenly feels the need to explain the difference between a vector and a scalar. Other times it goes the other way, that is, he jumps from talking about simple physical situations which are explained fairly well to complicated nonlinear situations modeled by PDEs that are not derived. Some of the equations are just given, with little explanation as to where they come from. For someone who has had courses dealing with fluid mechanics and sound waves, and has a solid mathematical background, this book is fine. However, an undergraduate not as well versed will be frustrated by the shift from lucid explanations to advanced material and back again.
This is what the professional and scientific journals said about this book when they reviewed it.
"One can only effervesce with praise... both comprehensive and readable - that informs the expert and educates the novice... The reader is well served by the author's careful attention to detail, extensive table of symbols (..), excellent use of photographs and graphics, and extraordinarily comprehensive bibliography, and, most of all, by his lucid descriptions of phenomena...Leighton is on top of all these recent developments" (Journal of the Acoustical Society of America).
"a lovely stroll through the realms and regions of acoustic cavitation, examining it in depth and breadth... an indispensable resource...The brief discussion of cavitation nucleation is superb and probably the best available on this topic... an excellent compendium of (..) equations and dynamical approaches and is probably the best and broadest reference on this topic available... not only details the historical record but offers intuitive explanations of its own" (Journal of Sound and Vibration).
"There is no doubt that this is the most comprehensive and accessible text on acoustic cavitation available... This is a required reference for scientists and, in particular, medical physicists interested in becoming acquainted with the mathematical description of bubble dynamics and the wealth of associated physical phenomena. It is user friendly, thorough in its treatment of the theory and encyclopaedic in its coverage of the experimental literature. I have no doubts that it will become a standard text." (Scope -the journal of the Institute of Physical Science in Medicine)
"The strength of this book lies in its effortless and enjoyable coverage of a wide swathe of rather intimidating literature and its unified approach... a fascinating wealth of detail... essential reading" (Physics in Medicine and Biology).
"for the reader there is a great deal of fascination... a major achievement" (Sonic Pulse).
This book gave me a head-start before I could dig deeper into the literature. Seems quite thorough on the available theories and experimental observations regarding cavitation in ultrasonic fields.
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