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Numerical And Experimental Investigation Of Laser Induced Cavitation Bubbles And Induced Damage
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Book Synopsis Numerical and Experimental Investigation of Laser-induced Cavitation Bubbles and Induced Damage by : Hemant J. Sagar
Download or read book Numerical and Experimental Investigation of Laser-induced Cavitation Bubbles and Induced Damage written by Hemant J. Sagar and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Study of Laser-induced Cavitation Bubbles on Warwick Cavitation Rig by :
Download or read book Experimental and Numerical Study of Laser-induced Cavitation Bubbles on Warwick Cavitation Rig written by and published by . This book was released on 2008 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Investigation of Damage on an Aluminum Surface by Single-Bubble Cavitation by : Hemant J. Sagar
Download or read book Experimental and Numerical Investigation of Damage on an Aluminum Surface by Single-Bubble Cavitation written by Hemant J. Sagar and published by . This book was released on 2018 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a better understanding and modeling of cavitation, investigations of isolated single-bubble events are useful. They allow for describing and quantifying the physics of the bubble collapse and its interaction with surrounding material. The generation of such single bubbles in a liquid using an electric spark or focused laser beam is well described in the literature, and sophisticated analyses of bubble dynamics near surfaces exist. However, only a few studies addressed the material damage induced by single-bubble collapse. This article presents experiments in water, generating single bubbles with 3-mm diameters at various defined distances to the polished surface of a commercially pure aluminum specimen. The collapse of each laser-induced bubble was captured by high-speed imaging. A detailed quantitative analysis of the surface damage was performed using 3-D profilometry. A single bubble created a shallow pit with a typical depth of 1 to 2 ?m. The overall statistics of the damage parameters, such as pit depth and volume, are consistent with previous investigations. Outliers with unusually small or multiple pits can be explained by the high-speed images of the corresponding bubble collapse. The image sequences also help identify effects of the edge of the specimen surface. In addition, a complementary numerical investigation of single bubbles based on the Navier-Stokes equations was used to obtain flow characteristics near the surface, such as microjet impact and pressure. For the commercially pure aluminum used in this study, simulation and measured surface damage correlate well. The methods developed here provide a basis for studies on more complex engineering materials.
Book Synopsis Laser Cavitation Bubbles at Objects: Merging Numerical and Experimental Methods by : Max Koch
Download or read book Laser Cavitation Bubbles at Objects: Merging Numerical and Experimental Methods written by Max Koch and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main body of this thesis deals with the existence of the so called fast jet that develops when a single, laser generated cavitation bubble expands and collapses close to a flat, solid boundary at normalised distances [0, 0.2]. One reason for this focus is that even after 100 years of research on cavitation erosion, the precise mechanism of damage of hardest materials by cavitation bubbles still is not fully clear. In this thesis it is shown that exactly in the range of normalized distance [0, 0.3] the main pressure peak takes place in the symmetry point at the solid boundary below the b...
Book Synopsis Experimental Investigation of Cavitation-bubble-induced Atomization by :
Download or read book Experimental Investigation of Cavitation-bubble-induced Atomization written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bubble Dynamics and Shock Waves by : Can F. Delale
Download or read book Bubble Dynamics and Shock Waves written by Can F. Delale and published by Springer Science & Business Media. This book was released on 2012-10-07 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the interplay of bubble dynamics and shock waves, covering shock wave emission by laser generated bubbles, pulsating bubbles near boundaries, interaction of shock waves with bubble clouds, applications in shock wave lithotripsy, and more.
Book Synopsis Advanced Experimental and Numerical Techniques for Cavitation Erosion Prediction by : Ki-Han Kim
Download or read book Advanced Experimental and Numerical Techniques for Cavitation Erosion Prediction written by Ki-Han Kim and published by Springer. This book was released on 2014-03-01 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive treatment of the cavitation erosion phenomenon and state-of-the-art research in the field. It is divided into two parts. Part 1 consists of seven chapters, offering a wide range of computational and experimental approaches to cavitation erosion. It includes a general introduction to cavitation and cavitation erosion a detailed description of facilities and measurement techniques commonly used in cavitation erosion studies, an extensive presentation of various stages of cavitation damage (including incubation and mass loss) and insights into the contribution of computational methods to the analysis of both fluid and material behavior. The proposed approach is based on a detailed description of impact loads generated by collapsing cavitation bubbles and a physical analysis of the material response to these loads. Part 2 is devoted to a selection of nine papers presented at the International Workshop on Advanced Experimental and Numerical Techniques for Cavitation Erosion Prediction (Grenoble, France, 1-2 March 2011) representing the forefront of research on cavitation erosion. Innovative numerical and experimental investigations illustrate the most advanced breakthroughs in cavitation erosion research.
Book Synopsis Computational & Experimental Methods in Multiphase & Complex Flow IX by : P. Vorobieff
Download or read book Computational & Experimental Methods in Multiphase & Complex Flow IX written by P. Vorobieff and published by WIT Press. This book was released on 2017-10-11 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 9th book from this successful conference series, on Computational & Experimental Methods in Multiphase & Complex Flow, presents the latest research in one of the most challenging, yet most universally applicable areas of technology. Multiphase flows are found in all areas of technology and the range of related problems of interest is vast, including astrophysics, biology, geophysics, atmospheric process, and many areas of engineering. Recently multiphase fluid dynamics have generated a great deal of attention, leading to many notable advances in experimental, analytical and numerical studies. It is perhaps, however, work on numerical solutions which is the most noticeable owing to the continuing improvements in computer software tools. Progress in numerical methods has permitted the solution of many practical problems, helping to improve our understanding of the physics involved. The presented papers illustrate the close interaction between numerical modellers and researchers working to gradually resolve the many outstanding issues in our understanding of multiphase flow. They cover such topics as: Multiphase flow simulation; Bubble and drop dynamics; Interface behaviour; Experimental measurements; Energy applications; Compressible flows; Flow in porous media; Turbulent flow; Image processing; Heat transfer; Atomization; Hydromagnetics; Plasma; Fluidised beds; Cavitation; Multiphase chemical reactions.
Book Synopsis Ultrafine Bubbles by : Koichi Terasaka
Download or read book Ultrafine Bubbles written by Koichi Terasaka and published by CRC Press. This book was released on 2021-09-15 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafine bubbles (UFBs) are gas-filled bubbles with a diameter smaller than 1 μm. They are sometimes called bulk nanobubbles because these are not on a solid surface but inside a bulk liquid (water). They are already being used in commercial processes such as cleaning and plant cultivation. However, many mysteries still exist with respect to UFBs, such as mechanisms of stability, OH radical formation, and biological and medical effects. This is the first book on UFBs that reviews research done on them. It is helpful for those interested in the fundamentals of this emerging field and its applications, including cleaning, biological, medical, and dental students and researchers.
Book Synopsis Numerical and Photographic Studies of Asymmetric Bubble Collapse by : T. M. Mitchell
Download or read book Numerical and Photographic Studies of Asymmetric Bubble Collapse written by T. M. Mitchell and published by . This book was released on 1967 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent investigations of the fundamental aspect of cavitation damage have indicated the importance of asymmetric bubble collapse. This investigation is an effort to theoretically and experimentally justify the role of asymmetric bubble collapse in cavitation damage. The theoretical investigation employs a combined Eulerian and Lagrangian computer code capable of following the collapse of a bubble much further than previous perturbation techniques. The experimental investigation is concerned with the development of a specialized spark camera with a maximum framing rate of 1,000,000 frames per second and a spatial resolution higher than any other camera presently available at this laboratory. (Author).
Book Synopsis Bubble Dynamics in Polymer Solutions Undergoing Shear by : Peter Stothe Kezios
Download or read book Bubble Dynamics in Polymer Solutions Undergoing Shear written by Peter Stothe Kezios and published by . This book was released on 1984 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic cavitation and its effects have been reported to be substantially inhibited and subsequently suppressed by the addition of minute quantities of water-soluble polymer. Modelling the growth and collapse of a single cavitation bubble in water has been established as the fundamental theoretical approach to understanding this phenomenon. Laser-induced cavitation has been developed as a technique for the experimental investigation and confirmation of predicted spherical and nonspherical bubble dynamics in quiescent viscous fluids. The present experimental research has sought to form a link between previous theoretical and experimental efforts. Optical cavitation has been used to create model cavitation bubbles nonintrusively within a fluid undergoing a steady shear flow history. The flow-induced deformation of these single bubbles was recorded and analyzed. Originator supplied keywords include: cavitation, rheology, non-Newtonian fluid mechanics, bubbles, nonspherical, viscoelastic liquids, polymers.
Book Synopsis Bubble Dynamics and Interface Phenomena by : John R. Blake
Download or read book Bubble Dynamics and Interface Phenomena written by John R. Blake and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the IUTAM Symposium on Bubble Dynamics and Interface Phenomena held at the University of Birmingham from 6-9 September 1993. In many respects it follows on a decade later from the very successful IUTAM Symposium held at CALTECH in June 1981 on the Mechanics and physics of bubbles in liquids which was organised by the late Milton Plesset and Leen van Wijngaarden. The intervening period has seen major development with both experiment and theory. On the experimental side there have been ad vances with very high speed photography and data recording that provide detailed information on fluid and interface motion. Major developments in both computer hardware and software have also led to extensive improvement in our understand ing of bubble and interface dynamics although development is still limited by the sheer complexity of the laminar and turbulent flow regimes often associated with bubbly flows. The symposium attracts wide and extensive interest from engineers, physical, chemical, biological and medical scientists and applied mathematicians. The sci entific committee sought to achieve a balance between theory and experiment over a range of fields in bubble dynamics and interface phenomena. It was our intention to emphasise both the breadth and recent developments in these various fields and to encourage cross-fertilisation of ideas on both experimental techniques and theo retical developments. The programme, and the proceedings recorded herein, cover bubble dynamics, sound and wave propagation, bubbles in flow, sonoluminescence, acoustic cavitation, underwater explosions, bursting bubbles and ESWL.
Book Synopsis COLLAPSE OF A CAVITATION BUBBLE IN VISCOUS, COMPRESSIBLE LIQUID -- NUMERICAL AND EXPERIMENTAL ANALYSES by : Richard D. Ivany
Download or read book COLLAPSE OF A CAVITATION BUBBLE IN VISCOUS, COMPRESSIBLE LIQUID -- NUMERICAL AND EXPERIMENTAL ANALYSES written by Richard D. Ivany and published by . This book was released on 1965 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mesoscale Analysis of Hydraulics by : Weilin Xu
Download or read book Mesoscale Analysis of Hydraulics written by Weilin Xu and published by Springer Nature. This book was released on 2020-12-03 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents a series of complicated hydraulic phenomena and related mechanism of high-speed flows in head-head dam. According to the basic hydraulic theory, detailed experiments and numerical simulations, microscopic scale analysis on cavitation bubbles, air bubbles, turbulent eddy vortices and sand grains are examined systemically. These investigations on microscopic fluid mechanics, including cavitation erosion, aeration protection, air–water flow, energy dissipation and river-bed scouring, allow a deep understanding of hydraulics in high-head dams. This book provides reference for designers and researchers in hydraulic engineering, environment engineering and fluid mechanics.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Japanese Journal of Applied Physics by :
Download or read book Japanese Journal of Applied Physics written by and published by . This book was released on 2009 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Fabrication and Machining of Materials by : Narendra B. Dahotre
Download or read book Laser Fabrication and Machining of Materials written by Narendra B. Dahotre and published by Springer Science & Business Media. This book was released on 2008-01-25 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental principles and physical phenomena behind laser-based fabrication and machining processes. It also gives an overview of their existing and potential applications. With laser machining an emerging area in various applications ranging from bulk machining in metal forming to micromachining and microstructuring, this book provides a link between advanced materials and advanced manufacturing techniques. The interdisciplinary approach of this text will help prepare students and researchers for the next generation of manufacturing.
