Luftens og væskers mekanik

((vorläufig))In diesem Band werden die wichtigsten Artikel Prandtls zu Turbulenzen und zur Grenzschichttheorie vorgestellt, kommentiert und in einen historischen sowie sozio-kulturellen Hintergrund eingeordnet.

This book provides a comprehensive overview of boundary layer flows, including laminar and turbulent flows. Chapters discuss such topics as the nature of transition, the effect of two-dimensional and isolated roughness on laminar flow, and progress in the design of low-drag airfoils. They also present theoretical and experimental results in boundary layer flows and discuss directions for future research.

Graphical depictions of abstract concepts have played a major role in the formulation and communication of ideas since prehistoric times. The invention of photography in the nineteenth century and more recent advances in visualization techniques have catalyzed an enormous wealth of insights into every field of science and engineering by extending our senses far beyond our natural sensorial capabilities. The field of porous media has also benefited enormously from these developments in visualization techniques. Indeed, improvements in these techniques have led to the better morphological characterization of porous media and an enhanced understanding of the assorted physical processes, such as mass transport, capillarity, swelling, and fracturing, that can occur at the pore level. These observations, in turn, have led to superior usage practices for existing porous materials and the design of new products with porous media. Therefore, this bilingual English-Spanish album is aimed at providing a collection of state¿of¿the¿art visualizations of the diverse aspects of porous media that will serve as a reference in education and research. To cover all these aspects properly, the album is organized into seven thematic parts. Each part includes a collection of chapters with images accompanied by a brief English-Spanish description of the novelty of the observation, the visualization technique used, and the phenomenological insights gained.Las representaciones gráficas de conceptos abstractos han jugado un papel importante en la formulación y comunicación de ideas desde tiempos prehistóricos. La invención de la fotografía en el siglo XIX y los avances más recientes en las técnicas de visualización han catalizado una enorme riqueza de conocimientos en todos los campos de la ciencia y la ingeniería al extender nuestros sentidos mucho más allá de nuestras capacidades sensoriales naturales. El campo de los medios porosos también se ha beneficiado enormemente de estos avances en las técnicas de visualización. De hecho, las mejoras en estas técnicas han llevado a una mejor caracterización morfológica de los medios porosos y una mejor comprensión de los diversos procesos físicos, como el transporte de masa, la capilaridad, la hinchazón y la fractura, que pueden ocurrir a nivel de poro. Estas observaciones, a su vez, han llevado a mejores prácticas de uso para los materiales porosos existentes y al diseño de nuevos productos con medios porosos. Por lo tanto, este álbum bilingüe inglés y español tiene como objetivo proporcionar una colección de visualizaciones del estado del arte de los diversos aspectos de los medios porosos que servirán como referencia en la educación y la investigación. Para cubrir adecuadamente todos estos aspectos, el álbum está organizado en siete partes temáticas. Cada parte incluye una colección de capítulos con imágenes acompañadas de una breve descripción en inglés y español de la originalidad de la observación, la técnica de visualización utilizada y los conocimientos fenomenológicos obtenidos.

This text provides a clear understanding of the fundamental principles of thermal and fluid sciences in a concise manner in a rigorous yet easy to follow language and presentation. Elucidation of the principles is further reinforced by examples and practice problems with detailed solutions. Firmly grounded in the fundamentals, the book maximizes readers¿ capacity to take on new problems and challenges in the field of fluid and thermal sciences with confidence and conviction. Standing also as a ready reference and review of the essential theories and their applications in fluid and thermal sciences, the book is applicable for undergraduate mechanical and chemical engineering students, students in engineering technology programs, as well as practicing engineers preparing for the engineering license exams (FE and PE) in USA and abroad.Explains the concepts and theory with a practical approach that readers can easily absorb;Provides the just the rightamount of theoretical and mathematical background needed, making it less intimidating for the reader;Covers fluid and thermal sciences in a straight-forward yet comprehensive manner facilitating a good understanding of the subject matter;Includes a wide spectrum and variety of problems along with numerous illustrative solved examples and many practice problems with solutions.

This book focuses on continuing the long-standing productive dialogue between physical science and the philosophy of science. Researchers and readers who want to keep up to date on front-line scientific research in fluid mechanics and gravitational wave astrophysics will find timely and well-informed analyses of this scientific research and its philosophical significance. These exciting frontiers of research pose deep scientific problems, and raise key questions in the philosophy of science related to scientific explanation and understanding, theory change and assessment, measurement, interpretation, realism, and modeling. The audience of the book includes philosophers of science, philosophers of mathematics, scientists with philosophical interests, and students in philosophy, history, mathematics, and science. Anyone who is interested in the methods and philosophical questions behind the recent exciting work in physics discussed here will profit from reading this book.

Das Buch beschreibt umfassend, dabei aber leicht verstandlich alle praxisrelevanten hydromechanischen Berechnungsansatze - von der Hydrostatik bis zu Stromungsproblemen. Es beantwortet kompetent die wichtigen hydraulischen Fragestellungen. Dazu dienen die in zahlreichen Berechnungsbeispielen detailliert dargestellten Rechengange mit vielen Abbildungen. Das macht es fur Bauingenieure in Studium und Praxis besonders wertvoll. Fur die zweite, vollstandig uberarbeitete Auflage ist das Kapitel Grundwasser entsprechend seiner Bedeutung wesentlich erweitert worden. Neu aufgenommen wurde auerdem die Thematik der Wellenberechnung, um den aktuellen Anforderungen an die Freibordbemessung gerecht zu werden.

Turbulence plays a crucial role in contexts ranging from galaxy formation to heavy atomic nuclei, from jet engines to arterial blood flow, challenging engineers, physicists, and mathematicians. Recently, turbulence of quantum fluids displaying superfluidity has emerged as an exciting area of interdisciplinary research that spans fluid dynamics, low-temperature physics, and Bose-Einstein condensation. The first book on quantum turbulence, this work describes state-of-the-art results and techniques, stressing analogies and differences with classical turbulence. The authors focus in particular on low temperature phases of liquid helium, drawing on evidence from recent experiments, theory, and numerical simulations. Written by leading figures in the field, this is a go-to reference for students and researchers at all levels.

This book is based on the industry leading short course of the same name hosted by the GIW Industries Hydraulic Laboratory and founded by Dr. Roland Clift and Graeme Addie, who together with Dr. Ken Wilson continued its development and authored the first edition of this textbook. This fourth edition has been extensively updated by the international team of engineers and authors who inherited this legacy and continue its development to the present day. Focusing on the hydraulic design of slurry pipelines, the pumps that power them, and the interactions between pumps and systems, it retains the classroom tested balance of theoretical development and practical engineering which have made it a slurry transport classic. The topics covered are important to slurry system engineers for the optimization of new designs, as well as the operators of existing systems, who may need to calculate and plan for changing conditions from day to day.Updates to the fourth edition include:· Careful formulation of the theoretical concepts, providing greater clarity of slurry flow dynamics, including a new chapter on the principles and characterization of slurry flows.· Expansion of the 4-Component Models for settling slurry pipeline flow and pump solids effect, based on an extensive series of full-sized tests.· An expanded treatment of complex slurries, including a broader discussion of non-Newtonian fluids and their interaction with coarse particles.· A new chapter on test methods, presenting an overview of slurry system instrumentation, moderntechniques for characterizing slurry rheology, and practical advice for planning and executing a slurry test.· An overview of advances in the computational modeling of slurries, including an in-depth parametric study of slurry pump wear and operating cost.The authors highlight methods for achieving energy efficiency, which are crucial to the effective use of scarce resources, given the foundational role of slurry transport systems in the energy intensive industries of mining and dredging. Key concepts are supported with case studies and worked examples.Slurry Transport Using Centrifugal Pumps, fourth edition, is both methodical and in-depth. It is ideal as a teaching tool for classroom or self-directed learning domains, and valuable as a design guide for engineer practitioners at all experience levels.

This book elucidates heat transfer behavior for boiling of dilute emulsions- mixtures of two immiscible fluids- which has received little attention to date. Of the work completed in this area, the majority has been focused on pool boiling where no mean flow is present, and this book is the first major work to be published regarding flow boiling of emulsions. The book includes a comprehensive review and assessment of research on emulsion-based heat transfer. Recent experiments are reported and analyzed to characterize heat transfer in microgap flow boiling via a systematic investigation into the effects of gap size, mass flux, and volume fraction on the heat transfer coefficient and pressure drop. The emulsion used in all experiments comprises droplets of an immiscible electronics cooling fluid suspended in water. The volume provides a complete baseline for flow boiling of water in the microgaps, enabling a determination of the enhancement of the heat transfer coefficient when thedisperse component is present. Moreover, a subset of the data set pertains to flow boiling of dilute emulsions over microporous surfaces. The flow conditions for which the microporous surfaces enhance or degrade heat transfer are presented. Finally, this book provides a discussion of the physical phenomena which affect boiling and a set of nondimensional numbers that can be used for correlation.

Aircraft Performance: An Engineering Approach, Second Edition introduces flight performance analysis techniques of fixed-wing air vehicles, particularly heavier-than-air aircraft. It covers maximum speed, absolute ceiling, rate of climb, range, endurance, turn performance, and takeoff run.

Practical Handbook of Thermal Fluid Science is an essential guide for engineering students to practical experiments and methods in fluid mechanics. It presents the topic of practical fluid physics in a simple, clear manner by introducing the fundamentals of carrying out experiments and operational analysis of systems that are based on fluid flow. The information enables readers to relate principles in thermal fluid science with the real world operation of important instruments that greatly impact our daily life, such as power generators, air conditioners, refrigerators, engines, flow meters, airplanes, among others. Key Features: - A simple organized chapter layout that focuses on fundamental and practical information about thermal fluid science experiments and equipment- Provides an introduction to essential knowledge for analysis and evaluation of practical systems and major inventions- Presents information about analysis of operating data for power plant efficiency - Detailed chapters for studying and testing wind tunnels, sphere heating/cooling, pipe flow, engines, and refrigerators/heat pumps are provided - Experimental data of Venturi and orifice plate flow meters are provided to show step by step calibration and experimentation. - Presents information on report preparation- Includes multiple appendices to consolidate practical information for readers for quick reference.

This book is useful to flow assurance engineers, students, and industries who wish to be flow assurance authorities in the twenty-first-century oil and gas industry.The use of digital or artificial intelligence methods in flow assurance has increased recently to achieve fast results without any thorough training effectively. Generally, flow assurance covers all risks associated with maintaining the flow of oil and gas during any stage in the petroleum industry. Flow assurance in the oil and gas industry covers the anticipation, limitation, and/or prevention of hydrates, wax, asphaltenes, scale, and corrosion during operation. Flow assurance challenges mostly lead to stoppage of production or plugs, damage to pipelines or production facilities, economic losses, and in severe cases blowouts and loss of human lives. A combination of several chemical and non-chemical techniques is mostly used to prevent flow assurance issues in the industry. However, the use of models to anticipate, limit, and/or prevent flow assurance problems is recommended as the best and most suitable practice. The existing proposed flow assurance models on hydrates, wax, asphaltenes, scale, and corrosion management are challenged with accuracy and precision. They are not also limited by several parametric assumptions. Recently, machine learning methods have gained much attention as best practices for predicting flow assurance issues. Examples of these machine learning models include conventional approaches such as artificial neural network, support vector machine (SVM), least square support vector machine (LSSVM), random forest (RF), and hybrid models. The use of machine learning in flow assurance is growing, and thus, relevant knowledge and guidelines on their application methods and effectiveness are needed for academic, industrial, and research purposes.In this book, the authors focus on the use and abilities of various machine learning methods in flow assurance. Initially, basic definitions and use of machine learning in flow assurance are discussed in a broader scope within the oil and gas industry. The rest of the chapters discuss the use of machine learning in various flow assurance areas such as hydrates, wax, asphaltenes, scale, and corrosion. Also, the use of machine learning in practical field applications is discussed to understand the practical use of machine learning in flow assurance.

The book is targeting students and professionals who are looking to advance their fluid power careers. The book is colored and has the size of standard A4. This book is the third in a series that the author plans to publish to offer separate book for every hydraulic component. This book introduces knowledge foundation about hydraulic transmission lines. This book overviews the basic types, contamination control, safety, maintenance, troubleshooting, failure analysis, noise control, and modeling of hydraulic transmission lines.

This book (Vol. II) presents select proceedings of the first Online International Conference on Recent Advances in Computational and Experimental Mechanics (ICRACEM 2020) and focuses on theoretical, computational and experimental aspects of solid and fluid mechanics. Various topics covered are computational modelling of extreme events; mechanical modelling of robots; mechanics and design of cellular materials; mechanics of soft materials; mechanics of thin-film and multi-layer structures; meshfree and particle based formulations in continuum mechanics; multi-scale computations in solid mechanics, and materials; multiscale mechanics of brittle and ductile materials; topology and shape optimization techniques; acoustics including aero-acoustics and wave propagation; aerodynamics; dynamics and control in micro/nano engineering; dynamic instability and buckling; flow-induced noise and vibration; inverse problems in mechanics and system identification; measurement and analysis techniques in nonlinear dynamic systems; multibody dynamical systems and applications; nonlinear dynamics and control; stochastic mechanics; structural dynamics and earthquake engineering; structural health monitoring and damage assessment; turbomachinery noise; vibrations of continuous systems, characterization of advanced materials; damage identification and non-destructive evaluation; experimental fire mechanics and damage; experimental fluid mechanics; experimental solid mechanics; measurement in extreme environments; modal testing and dynamics; experimental hydraulics; mechanism of scour under steady and unsteady flows; vibration measurement and control; bio-inspired materials; constitutive modelling of materials; fracture mechanics; mechanics of adhesion, tribology and wear; mechanics of composite materials; mechanics of multifunctional materials; multiscale modelling of materials; phase transformations in materials; plasticity and creep in materials; fluid mechanics, computational fluid dynamics; fluid-structure interaction; free surface, moving boundary and pipe flow; hydrodynamics; multiphase flows; propulsion; internal flow physics; turbulence modelling; wave mechanics; flow through porous media; shock-boundary layer interactions; sediment transport; wave-structure interaction; reduced-order models; turbo-machinery; experimental hydraulics; mechanism of scour under steady and unsteady flows; applications of machine learning and artificial intelligence in mechanics; transport phenomena and soft computing tools in fluid mechanics. The contents of these two volumes (Volumes I and II) discusses various attributes of modern-age mechanics in various disciplines, such as aerospace, civil, mechanical, ocean engineering and naval architecture. The book will be a valuable reference for beginners, researchers, and professionals interested in solid and fluid mechanics and allied fields.

This book provides well-balanced coverage of computational fluid dynamics analysis for thermal and flow characteristics of various thermal and flow systems. It presents the latest research work to provide insight into modern thermal engineering applications. It also discusses enhanced heat transfer and flow characteristics.

Emerging Technologies in Hydraulic Fracturing and Gas Flow Modelling features the latest strategies for exploiting depleted and unconventional petroleum rock formations as well as simulating associated gas flow mechanisms. The book covers a broad range of multivarious stimulation methods currently applied in practice. It introduces new stimulation techniques including a comprehensive description of interactions between formation/hydraulic fracturing fluids and the host rock material. It provides further insight into practices aimed at advancing the operation of hydrocarbon reservoirs and can be used either as a standalone resource or in combination with other related literature. The book can serve as a propaedeutic resource and is appropriate for those seeking rudimentary information on the exploitation of ultra-impermeable oil and gas reservoirs. Professionals and researchers in the field of petroleum, civil, oil and gas, geotechnical and geological engineering who are interested in the production of unconventional petroleum resources as well as students undertaking studies in similar subject areas will find this to be an instructional reference.

Turbulence is a research field where high expectations have met with recurrent frustration. It is a common perception among physicists, mathematicians and engineers that there is a "big mystery" behind the phenomenon of turbulence. Its history has also remained anything but well researched. Unlike topics such as quantum theory, which began to attract physics historians as long as fifty years ago, turbulence has - until now - received only little professional historical investigation.In this book, which complements his earlier SpringerBrief "The Turbulence Problem", the author sketches the history of turbulence from the vantage point of its roots (Part I), the basic concepts (Part II) and the formation of a scientific community that regarded turbulence as a research field in its own right (Part III). From this perspective turbulence research appears to undertake an odyssey through uncharted territories. The book follows this development up until a conference in Marseille in theyear 1961, which marked the inauguration of turbulence in the words of its organizer as ¿a new science¿. The epilogue contains some observations about turbulence research since 1961. This book provides a rich source of information for all those interested in the history of this major field of basic and applied science.

The book describes the thermodynamics, fluid dynamics, and working principle of the Ranque Hilsch Vortex Tube. Although vortex tubes have been around for a long time, different explications of their fundamental physics and operation can be found in literature and on the internet. This volume investigates the working principle based on thermodynamics and fluid dynamics. It provides full explication of these parameters in one single work along with results of new investigations not published elsewhere. In addition, the book features a wealth of illustrations on various aspects of the vortex tube that make it easy to read and understand.

This textbook combines in a unique concept the design and construction of radial and axial fans with the problem of noise generation as well as its mitigation already in the fan development stage. The aim is to describe selected, easily applicable methods of aerodynamic design and noise prediction and to demonstrate their physical principles. Exercises with solutions facilitate understanding. The completely revised and expanded edition now also includes guidance on selecting fans for a given task, simulation-based optimization methods for fan design, and psychoacoustic methods that can be used to measure the quality of fan noise.This book is a translation of the original German 4th edition Ventilatoren by Thomas Carolus, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2020. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequenthuman revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.