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Author : Zhaohao Li
Publisher : Springer Nature
ISBN 13 : 3031542460
Total Pages : 91 pages
Book Rating : 4.0/5 (315 download)
Download or read book Cavity Dynamics and Splashing Mechanism in Droplets written by Zhaohao Li and published by Springer Nature. This book was released on with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arie Biesheuvel
Publisher : Springer Science & Business Media
ISBN 13 : 9401149860
Total Pages : 502 pages
Book Rating : 4.4/5 (11 download)
Download or read book In Fascination of Fluid Dynamics written by Arie Biesheuvel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Fascination of Fluid Dynamics contains a collection of papers by international experts in hydrodynamics, based on oral presentations at a symposium held in honour of Professor Leen van Wijngaarden on his 65th birthday. The book begins with a personal sketch of his life and scientific career. It continues with a mixture of papers that address recent developments in various branches of fluid mechanics. Many of the papers cover different aspects of multiphase flows: bubble dynamics, cavitation, bubbles and particles in turbulent flows, suspension flows, and wave phenomena in fluidised beds. Other topics that are addressed include: dynamics of jets, shock waves, MHD turbulence, selforganisation phenomena in 2D turbulence, vortex rings and the thermodynamics of tropical cyclones. This edited volume will be valuable reading for researchers, engineers and students interested in hydrodynamics, and in particular in multiphase flows.
Author : Davide Peduto
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 3832540016
Total Pages : 206 pages
Book Rating : 4.8/5 (325 download)
Download or read book Oil Droplet Impact Dynamics in Aero-Engine Bearing Chambers-Correlations derived from Direct Numerical Simulations written by Davide Peduto and published by Logos Verlag Berlin GmbH. This book was released on 2015-06-30 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearing Chambers in Aero-Engines are located near the rolling-element type of bearings which support the shafts and accomodate the resulting thrust loads. One of the main task of the bearing chambers is, beside an efficient scavenging of the lubricating oil, the cooling of the hot compartments. A very complex two-phase air-oil flow takes usually place in these bearing chambers consisting of oil droplet-laden air flows and shear-driven liquid wall films. The interaction of the droplets with the wall films is significantly influencing the wall heat transfer and the cooling performance of these systems. For this reason, a detailed characterization and modelling of the mass and momentum exchange between droplets and wall films for the unique impingement parameter range in bearing chambers is inevitable. This scientific report investigates the oil droplet impact dynamics for typical impingement regimes relevant to aero-engine bearing chambers. The application of a Direct Numerical Simulation (DNS) technique based on the Volume-of-Fluid (VOF) method and coupled with a gradient-based adaptive mesh refinement (AMR) technique allowed to characterize the drop impact dynamics during various single micro- and millimeter drop impacts onto thin and thick films. With the help of a special numerical treatment, a self-perturbing mechanism is installed that leads to the correct resolution of the crown disintegration process. The numerical methodology was thoroughly validated using the experimental results of millimeter sized drop impacts onto deep liquid pools. These results were developed with an enhanced back-illuminated high-speed imaging and Particle Tracking Velocimetry (PTV) technique. New insights into the cavity penetration, the crown's breakup dynamics and the secondary droplet characteristics following a single drop impact have been developed with the help of the isolated variation of different parameters of influence. Particularly the influence of the Froude number, the impingement angle, and the cavity-wall interaction delivered results to date not reported in scientific literature. Beside the advances in fundamental physics describing the drop impact dynamics with the help of the numerical and experimental results, a set of correlations could also be derived. From these correlations, a drop-film interaction model was formulated that is suitable for the parameter range found in bearing chambers.
Author : Arnold Frohn
Publisher : Springer Science & Business Media
ISBN 13 : 3662040409
Total Pages : 298 pages
Book Rating : 4.6/5 (62 download)
Download or read book Dynamics of Droplets written by Arnold Frohn and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with the dynamical behaviour of single droplets and regular droplet systems. It has been written mainly for experimental researchers. After a short description of the theoretical background, the different experimental facilities and methods necessary for the investigation of single droplets are described in detail. A summary of important applications is included.
Author : Yasunori Watanabe
Publisher : CRC Press
ISBN 13 : 1000597482
Total Pages : 296 pages
Book Rating : 4.0/5 (5 download)
Download or read book Dynamics of Water Surface Flows and Waves written by Yasunori Watanabe and published by CRC Press. This book was released on 2022-11-11 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Water Surface Flows and Waves provides theoretical descriptions of the whole life of water surface waves through their birth, propagation, evolution and finally breaking. While initial capillary waves are created via instability at air-water interfaces, potential wave theories adequately describe interactions of waves with current, bathymetry and structure. In the final breaking stage, potential fluid motions in the waves rapidly evolve into vortical turbulent flows that disturb the surfaces, resulting in entrainment of air-bubbles and ejection of sea spray in bursting bubbles floating on the surface. All theories and analytical methods required to understand the series of wave processes, over diverse areas of subjects, including turbulence, diffusion, vortex and capillary dynamics, shallow water approach, and stability analysis, as well as the conventional potential wave theory, are comprehensively covered in this book. All of the mathematical formulas are consistently developed from theorems and linked with physics, which provides theoretical understanding and further interest in wave dynamics. This is an ideal graduate-level textbook or reference for engineers and researchers in the fields of fluid and wave mechanics, coastal and ocean engineering.
Author : G.L. Geernaert
Publisher : Springer Science & Business Media
ISBN 13 : 9401592918
Total Pages : 573 pages
Book Rating : 4.4/5 (15 download)
Download or read book Air-Sea Exchange: Physics, Chemistry and Dynamics written by G.L. Geernaert and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1980's a wealth of information was reported from field and laboratory experiments in order to validate andlor modify various aspects of the surface layer Monin-Obukhov (M-O) similarity theory for use over the sea, and to introduce and test new concepts related to high resolution flux magnitudes and variabilities. For example, data from various field experiments conducted on the North Sea, Lake Ontario, and the Atlantic experiments, among others, yielded information on the dependence of the flux coefficients on wave state. In all field projects, the usual criteria for satisfying M-O similarity were applied. The assumptions of stationarity and homogeneity was assumed to be relevant over both small and large scales. In addition, the properties of the outer layer were assumed to be "correlated" with properties of the surface layer. These assumptions generally required that data were averaged for spatial footprints representing scales greater than 25 km (or typically 30 minutes or longer for typical windspeeds). While more and more data became available over the years, and the technology applied was more reliable, robust, and durable, the flux coefficients and other turbulent parameters still exhibited significant unexplained scatter. Since the scatter did not show sufficient reduction over the years to meet customer needs, in spite of improved technology and heavy financial investments, one could only conclude that perhaps the use of similarity theory contained too many simplifications when applied to environments which were more complicated than previously thought.
Author : Omer San
Publisher : MDPI
ISBN 13 : 3039364022
Total Pages : 302 pages
Book Rating : 4.0/5 (393 download)
Download or read book Recent Numerical Advances in Fluid Mechanics written by Omer San and published by MDPI. This book was released on 2020-07-03 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, the field of computational fluid dynamics has made significant advances in enabling advanced computing architectures to understand many phenomena in biological, geophysical, and engineering fluid flows. Almost all research areas in fluids use numerical methods at various complexities: from molecular to continuum descriptions; from laminar to turbulent regimes; from low speed to hypersonic, from stencil-based computations to meshless approaches; from local basis functions to global expansions, as well as from first-order approximation to high-order with spectral accuracy. Many successful efforts have been put forth in dynamic adaptation strategies, e.g., adaptive mesh refinement and multiresolution representation approaches. Furthermore, with recent advances in artificial intelligence and heterogeneous computing, the broader fluids community has gained the momentum to revisit and investigate such practices. This Special Issue, containing a collection of 13 papers, brings together researchers to address recent numerical advances in fluid mechanics.
Author : Martin Rein
Publisher : Springer Science & Business Media
ISBN 13 : 9783211836927
Total Pages : 328 pages
Book Rating : 4.8/5 (369 download)
Download or read book Drop-Surface Interactions written by Martin Rein and published by Springer Science & Business Media. This book was released on 2002-10-30 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of fluid mechanical, thermal and physico-chemical aspects of drop-surface interactions. Basic physical mechanisms pertaining to free-surface flow phenomena characteristic of drop impact on solid and liquid surfaces are explained emphasizing the importance of scaling. Moreover, physico-chemical fundamentals relating to a forced spreading of complex solutions, analytical tools for calculating compressibility effects, and heat transfer and phase change phenomena occurring during solidification and evaporation processes, respectively, are introduced in detail. Finally, numerical approaches particularly suited for modeling drop-surface interactions are consisely surveyed with a particular emphasis on boundary integral methods and Navier-Stokes algorithms (volume of fluid, level set and front tracking algorithms). The book is closed by contributions to a workshop on Drop-Surface Interactions held at the International Centre of Mechanical Sciences.
Author : Rajeev Dhiman
Publisher :
ISBN 13 : 9780494590683
Total Pages : 316 pages
Book Rating : 4.5/5 (96 download)
Download or read book Splashing and Breakup of Droplets Impacting on a Solid Surface written by Rajeev Dhiman and published by . This book was released on 2009 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two new mechanisms of droplet splashing and breakup during impact have been identified and analyzed. One is the internal rupture of spreading droplet film through formation of holes, and the other is the splashing of droplet due to its freezing during spreading. The mechanism of film rupture was investigated by two different methods. In the first method, circular water films were produced by directing a 1 mm diameter water jet onto a flat, horizontal plate for 10 ms. In the second method, films were produced by making 0.6 mm water droplets impact a solid surface mounted on the rim of a rotating flywheel. Substrate wettability was varied over a wide range, including superhydrophobic. In both cases, the tendency to film rupture first increased and then decreased with contact angle. A thermodynamic stability analysis predicted this behavior by showing that films would be stable at very small or very large contact angle, but unstable in between. Film rupture was also found to be promoted by increasing surface roughness or decreasing film thickness. To study the effect of solidification, the impact of molten tin droplets (0.6 mm diameter) on solid surfaces was observed for a range of impact velocities (10 to 30 m/s), substrate temperatures (25 to 200°C) and substrate materials (stainless steel, aluminum and glass) using the rotating flywheel apparatus. Droplets splashed extensively on a cold surface but on a hot surface there was no splashing. Splashing could be completely suppressed by either increasing the substrate temperature or reducing its thermal diffusivity. An analytical model was developed to predict this splashing behavior. The above two theories of freezing-induced splashing and film rupture were combined to predict the morphology of splats typically observed in a thermal spray process. A dimensionless solidification parameter, which takes into account factors such as the droplet diameter and velocity, substrate temperature, splat and substrate thermophysical properties, and thermal contact resistance between the two, was developed. Predictions from the model were compared with a wide range of experimental data and found to agree well.
Author : Jesus Rodrigo Comino
Publisher : Elsevier
ISBN 13 : 0128232870
Total Pages : 591 pages
Book Rating : 4.1/5 (282 download)
Download or read book Precipitation written by Jesus Rodrigo Comino and published by Elsevier. This book was released on 2021-08-21 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precipitation: Earth Surface Responses and Processes provides readers with a general and indispensable overview of processing rainfall processes through radar techniques, numerical models, geostatistical tools, photogrammetric methods, plots, indexes of connectivity or rainfall simulations. The handbook follows a clear and consistent format, and is structured as follows: Introduction (State-of-the-Art); Part 1. Rainfall and climate/atmosphere; Part 2. Models and applications; Part 3. Rainfall as a key actor playing the main role affecting different ecosystems. Part 3: Rainfall affecting the earth surface from different scales and landforms; Part 4: Rainfall and stormwater quality management in urban and rural areas. Precipitation is a key factor needed for understanding landscape evolution and ecosystem services. Knowing the main precipitation composition, mechanisms and processes allows for efficient land management plans and ecosystem restoration activities. However, precipitation shows different responses under specific environments depending on the climate (from the arid to the polar areas), parent material, scale (from the raindrops to catchment scale), intensity, landscape morphologies (soil sealing, rills, gullies or rivers) or human activities (agriculture or urban areas). Precipitation: Earth Surface Responses and Processes bring this information together and provides indispensable material in a holistic manner for students, scientists and lecturers from different environmental disciplines such as climatology, meteorology, geomorphology, hydrology, soil science, geography, engineering, or ecology. Includes observations on a range of earth surface processes, from climate to coastal marine ecosystems Presents key case studies in each chapter, enhancing the applicability of each chapter Introduces precipitation as a key factor to understand earth mechanisms and processes
Author : Uday S. Dixit
Publisher : Springer Nature
ISBN 13 : 9811557128
Total Pages : 279 pages
Book Rating : 4.8/5 (115 download)
Download or read book Mechanical Sciences written by Uday S. Dixit and published by Springer Nature. This book was released on 2020-07-23 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of review articles by experts on recent developments in mechanical engineering sciences. The book has been composed to commemorate the Silver Jubilee of the Mechanical Engineering Department, Indian Institute of Technology Guwahati. It includes articles on modern mechanical sciences subjects of advanced simulation techniques and molecular dynamics, microfluidics and microfluidic devices, energy systems, intelligent fabrication, microscale manufacturing, smart materials, computational techniques, robotics and their allied fields. It presents the upcoming and emerging areas in mechanical sciences which will help in formulation of new courses and updating existing curricula. This book will help the academicians and policy makers in the field of engineering education to chart out the desired path for the development of technical education.
Author : Haecheon Choi
Publisher : Springer Science & Business Media
ISBN 13 : 3642012736
Total Pages : 776 pages
Book Rating : 4.6/5 (42 download)
Download or read book Computational Fluid Dynamics 2008 written by Haecheon Choi and published by Springer Science & Business Media. This book was released on 2009-07-23 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are delighted to present this book which contains the Proceedings of the Fifth International Conference on Computational Fluid Dynamics (ICCFD5), held in Seoul, Korea from July 7 through 11, 2008. The ICCFD series has established itself as the leading international conference series for scientists, mathematicians, and engineers specialized in the computation of fluid flow. In ICCFD5, 5 Invited Lectures and 3 Keynote Lectures were delivered by renowned researchers in the areas of innovative modeling of flow physics, innovative algorithm development for flow simulation, optimization and control, and advanced multidisciplinary - plications. There were a total of 198 contributed abstracts submitted from 25 countries. The executive committee consisting of C. H. Bruneau (France), J. J. Chattot (USA), D. Kwak (USA), N. Satofuka (Japan), and myself, was responsible for selection of papers. Each of the members had a separate subcommittee to carry out the evaluation. As a result of this careful peer review process, 138 papers were accepted for oral presentation and 28 for poster presentation. Among them, 5 (3 oral and 2 poster presentation) papers were withdrawn and 10 (4 oral and 6 poster presentation) papers were not presented. The conference was attended by 201 delegates from 23 countries. The technical aspects of the conference were highly beneficial and informative, while the non-technical aspects were fully enjoyable and memorable. In this book, 3 invited lectures and 1 keynote lecture appear first. Then 99 c- tributed papers are grouped under 21 subject titles which are in alphabetical order.
Author : R.J. Adrian
Publisher : Springer Science & Business Media
ISBN 13 : 3642612547
Total Pages : 570 pages
Book Rating : 4.6/5 (426 download)
Download or read book Applications of Laser Techniques to Fluid Mechanics written by R.J. Adrian and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume consists of papers selected from the proceedings of the Fifth International Symposium on Applications of Laser Techniques to Fluid Mechanics, held at the Calouste Gulbenkian Foundation in Lisbon from 9 to 12 July, 1990. Relative to previous meetings in the Lisbon series the scope of this symposium was broadened by expanding the topical coverage to include all laser techniques used in fluid mechanics. This change recognized the trend amongst experimental fluid dynamicists to employ laser techniques for the mea surement of many different quantities, including concentration, temperature, particle size, and velocity, and the need for researchers to have a forum in which to communicate their work and share their common interests. The Fifth Symposium contained twenty-three sessions of formal presentations and a lively Open Forum ses sion. In addition, Dr. H. J. Pfeiffer organized a special Workshop on the Use of Computers in Flow Mea surements which contained five sessions on frequency domain processors, correIa tors, special detectors, and biasing.
Author : Alexander L. Yarin
Publisher : Cambridge University Press
ISBN 13 : 110821097X
Total Pages : 629 pages
Book Rating : 4.1/5 (82 download)
Download or read book Collision Phenomena in Liquids and Solids written by Alexander L. Yarin and published by Cambridge University Press. This book was released on 2017-06-15 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive account of the physical foundations of collision and impact phenomena and their applications in a multitude of engineering disciplines. In-depth explanations are included to reveal the unifying features of collision phenomena in both liquids and solids, and to apply them to disciplines including theoretical and applied mechanics, physics and applied mathematics, materials science, aerospace, mechanical and chemical engineering, and terminal ballistics. Covering a range of examples from drops, jets, and sprays, to seaplanes and ballistic projectiles, and detailing a variety of theoretical, numerical, and experimental tools that can be used in developing new models and approaches, this is an ideal resource for students, researchers, and practicing engineers alike.
Author : American Nuclear Society. Thermal Hydraulics Division. Meeting
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.3/5 (91 download)
Download or read book Proceedings of Nuclear Thermal Hydraulics written by American Nuclear Society. Thermal Hydraulics Division. Meeting and published by . This book was released on 1988 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Elsevier
ISBN 13 : 0080556450
Total Pages : 397 pages
Book Rating : 4.0/5 (85 download)
Download or read book Advances in Insect Physiology written by and published by Elsevier. This book was released on 2007-12-14 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insects have much to offer when it comes to designing engineering solutions to problems, whether for robotics, aeronautics, computing or materials science. Insect Mechanics and Control, the first book ever published on this topic, bringing together world experts working at the interface between entomology, engineering and physics to showcase the exciting research in this rapidly growing field. The authors, applied mathematicians, physicists or quantitative biologists, provide coverage of their subjects in a way that uses the minimum necessary technical detail, making the subject accessible to biologists and their students who are not expert in the field. The book in turn provides a valuable compendium of biological information for physical scientists, thus promoting interchange between the biological and physical sciences. * Covers important problems in mechanics and control, by reference to extraordinary and fascinating insect examples * Written by experts, physicists, applied mathematicians and quantitative biologists * Offers a biological inspiration to physical scientists, from MEMS design to robotics * Provides a compelling example of integrative biology
Author : Alexander L. Yarin
Publisher : Cambridge University Press
ISBN 13 : 1107147905
Total Pages : 629 pages
Book Rating : 4.1/5 (71 download)
Download or read book Collision Phenomena in Liquids and Solids written by Alexander L. Yarin and published by Cambridge University Press. This book was released on 2017-06-15 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique and in-depth discussion uncovering the unifying features of collision phenomena in liquids and solids, along with applications.
