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 Free Download Theory of Concentrated Vortices: An Introduction by S.V. Alekseenko , P.A. Kuibin , V.L. Okulov English | PDF (True) | 2007 | Pages | ISBN : 3540733752 | 94.6 MB Vortex motion is one of the basic states of a flowing continuum. Intere- ingly, in many cases vorticity is space-localized, generating concentrated vortices. Vortex filaments having extremely diverse dynamics are the most characteristic examples of such vortices. Notable examples, in particular, include such phenomena as self-inducted motion, various instabilities, wave generation, and vortex breakdown. These effects are typically ma- fested as a spiral (or helical) configuration of a vortex axis. Many publications in the field of hydrodynamics are focused on vortex motion and vortex effects. Only a few books are devoted entirely to v- tices, and even fewer to concentrated vortices. This work aims to highlight the key problems of vortex formation and behavior. The experimental - servations of the authors, the impressive visualizations of concentrated vortices (including helical and spiral) and pictures of vortex breakdown primarily motivated the authors to begin this work. Later, the approach based on the helical symmetry of swirl flows was developed, allowing the authors to deduce simplified mathematical models and to describe many vortex phenomena. The major portion of this book consists of theoretical studies of vortex dynamics. The final chapter presents detailed results of experimentally observed concentrated vortices that provide the basis for analysis and stimulate development of vortex theory. The mathematical description of the dynamics of concentrated vortices is hindered by the requirement to consider three-dimensional and nonlinear effects, singularity, and various instabilities. For each particular problem, very different coordinate frames and equation systems must be used.  Free Download Theoretical and Numerical Unsaturated Soil Mechanics by T. Schanz English | PDF (True) | 2007 | 229 Pages | ISBN : 3540698752 | 18.6 MB These proceedings are a continuation of the series of International Conferences in Germany entitled "Mechanics of Unsaturated Soils." The primary objective is to discuss and understand unsaturated soil behaviour such that engineered activities are made better with times in terms of judgement and quality. We all realise by now that in addition to the knowledge on the classical concepts, it becomes an enormous challenging task to adapt convincing new concepts and present them in such a way that it could be used in engineering practices.  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Are holidays good for our health? What are the social and psychological factors that drive us to move?  Free Download The Physics of Metrology: All about Instruments: From Trundle Wheels to Atomic Clocks by Alexius J. Hebra English | PDF (True) | 2010 | 392 Pages | ISBN : 3211783806 | 15.9 MB Conceived as a reference manual for practicing engineers, instrument designers, service technicians and engineering students. The related fields of physics, mechanics and mathematics are frequently incorporated to enhance the understanding of the subject matter. Historical anecdotes as far back as Hellenistic times to modern scientists help illustrate in an entertaining manner ideas ranging from impractical inventions in history to those that have changed our lives.  Free Download The Mind Mappers: Friendship, Betrayal and the Obsessive Quest to Chart the Brain by Eric Andrew-Gee English | May 27, 2025 | ISBN: 1039008062, 9781039008076 | True EPUB | 368 pages | 9.3 MB The riveting true story of the star-crossed friendship between two neuroscientists-one famous, the other forgotten-who mapped the brain, but lost each other.  Free Download The Karst Systems of Florida: Understanding Karst in a Geologically Young Terrain by Sam Upchurch English | EPUB | 2018 (2019 Edition) | 459 Pages | ISBN : 3319696343 | 268.3MB This book discusses the geology, hydrogeology, and water quality/geochemistry of karst systems in geologically young terrain, using the state of Florida as an example. Also discussed are sinkhole-development models; sinkhole risk; eogenetic karst features developed in rocks as young as 125,000 years and as old as 65 million years; and karst landscapes of Florida, including regional geology and geomorphology with important examples of karst features, such as springs, sinkholes, caves, and other karst landforms. The eogenetic karst of Florida is largely covered and this book extensively discusses the interactions of karst processes with sand- and clay-rich cover materials. |
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