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Long description: Eine wichtige Zielstellung bei der Entwicklung moderner Flugtriebwerke ist die weitere Steigerung der Effizienz bei gleichzeitiger Reduktion von Schadstoffemissionen und Lärm. Hierfür müssen neue und innovative Brennkammerkonzepte entwickelt und validiert werden, da die Art der Verbrennungsführung und die Positionierung der Flamme in der Brennkammer die Emissionscharakteristiken entscheidend bestimmt. Die Verbrennungsführung wiederum wird maßgeblich durch die Zerstäubung des flüssigen Kraftstoffs beeinflusst. Bisher war jedoch der Vorgang der Primärzerstäubung des Brennstoffes einer vollständigen numerischen Beschreibung nicht zugänglich. Die große Spanne unterschiedlicher Längenskalen der Gas- und Flüssigphase während des Zerfallsprozesses bedingt einen immensen numerischen Aufwand, der durch die Notwendigkeit der physikalisch exakten Beschreibung der Grenzfläche zwischen den beiden Phasen und den dort vorherrschenden Phänomenen und Prozessen noch zusätzlich erhöht wird. Im vorliegenden Forschungsbericht wendet der Autor die relativ junge numerische Methode Smoothed Particle Hydrodynamics (SPH) erstmals für die Berechnung des Primärzerfalls von Brennstoff in luftgestützten Zerstäuberdüsen an. Ein Schwerpunkt der Arbeit liegt auf der Steigerung der numerischen Leistungsfähigkeit der SPH Methode im Vergleich zu klassischen gitterbasierten Verfahren. Weiterhin wird auf Aspekte der Implementierung eingegangen, welche den erfolgreichen Einsatz der Methode auf modernen Hochleistungsrechnern ermöglichen. Ein weiterer Schwerpunkt der Arbeit liegt auf der Validierung des Verfahrens mit Hilfe von am Institut für Thermische Strömungsmaschinen vorhandenen detaillierten Messergebnissen einer generischen planaren Zerstäuberdüse. Sowohl die Validierungsergebnisse als auch die numerische Leistungsfähigkeit unterstreichen das hohe Potential von SPH zur numerischen Berechnung komplexer Mehrphasenströmungen mit starker Phasenwechselwirkung

Smoothed Particle Hydrodynamics --- Zerstäubung --- Computational Fluid Dynamics (CFD) --- High Performance Computing --- Mehrphasenströmungen

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This book introduces the basic concepts of environmental fluid dynamics. It is intended for use by students, researchers, engineers, and specialists working not only in general fluid research but also in the atmospheric and oceanic research fields. The Earth is covered by atmosphere and oceans and is exposed to solar wind. Therefore, the knowledge of fluid dynamics is essential for tackling its environmental issues. Although many textbooks have treated fluid dynamics, practically no book has been published that clearly describes all essential ideas, from the fundamentals of fluid dynamics to advanced environmental sciences, with careful sequential explanations of the governing mathematics. This book has been developed to solve these educational problems and has actually been in use in lectures in the graduate school of Kyushu University for more than 15 years.

Earth sciences. --- Environmental sciences. --- Fluids. --- Geophysics. --- Earth Sciences. --- Environmental Science and Engineering. --- Fluid- and Aerodynamics. --- Environmental Physics. --- Geophysics and Environmental Physics. --- Fluid dynamics --- Environmental engineering --- Mathematics. --- Mathematical models. --- Physical geography. --- Geography --- Geological physics --- Terrestrial physics --- Earth sciences --- Physics --- Hydraulics --- Mechanics --- Hydrostatics --- Permeability --- Environmental science --- Science

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This special volume of the conference will be of immense use to the researchers and academicians. In this conference, academicians, technocrats and researchers will get an opportunity to interact with eminent persons in the field of Applied Mathematics and Scientific Computing. The topics to be covered in this International Conference are comprehensive and will be adequate for developing and understanding about new developments and emerging trends in this area. High-Performance Computing (HPC) systems have gone through many changes during the past two decades in their architectural design to satisfy the increasingly large-scale scientific computing demand. Accurate, fast, and scalable performance models and simulation tools are essential for evaluating alternative architecture design decisions for the massive-scale computing systems. This conference recounts some of the influential work in modeling and simulation for HPC systems and applications, identifies some of the major challenges, and outlines future research directions which we believe are critical to the HPC modeling and simulation community.

High performance computing. --- HPC (Computer science) --- Electronic data processing --- Cyberinfrastructure --- Supercomputers --- Computer science. --- Hydraulic engineering. --- Numerical analysis. --- Computational Science and Engineering. --- Engineering Fluid Dynamics. --- Numerical Analysis. --- Math Applications in Computer Science. --- Mathematical analysis --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Informatics --- Science --- Computer mathematics. --- Fluid mechanics. --- Computer science—Mathematics. --- Hydromechanics --- Continuum mechanics --- Computer mathematics --- Mathematics --- Computer science --- Mathematical Applications in Computer Science. --- Data processing. --- Mathematics.

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Encompassing both practical applications and recent research developments, this book takes the reader from fundamental physics, through cutting-edge new designs of ejectors for refrigeration. The authors’ unique vision marries successful design, system optimization, and operation experience with insights on the application of cutting-edge Computational Fluid Dynamics (CFD) models. This robust treatment leads the way forward in developing improved ejector technologies. The book covers ejectors used for heat powered refrigeration and for expansion work recovery in compression refrigerators, with special emphasis on two-phase flows of “natural” fluids within the ejector, i.e. steam and carbon dioxide. It features worked examples, detailed research results, and analysis tools. .

Refrigeration and refrigerating machinery --- Equipment and supplies. --- Energy. --- Fluids. --- Thermodynamics. --- Heat engineering. --- Heat transfer. --- Mass transfer. --- Fluid mechanics. --- Energy Efficiency. --- Engineering Fluid Dynamics. --- Engineering Thermodynamics, Heat and Mass Transfer. --- Fluid- and Aerodynamics. --- Hydraulic engineering. --- Engineering. --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Construction --- Industrial arts --- Technology --- Energy efficiency. --- Mechanics --- Physics --- Hydrostatics --- Permeability --- Mass transport (Physics) --- Thermodynamics --- Transport theory --- Heat transfer --- Thermal transfer --- Transmission of heat --- Energy transfer --- Heat --- Mechanical engineering --- Chemistry, Physical and theoretical --- Dynamics --- Heat-engines --- Quantum theory --- Hydromechanics --- Continuum mechanics --- Consumption of energy --- Energy efficiency --- Fuel consumption --- Fuel efficiency --- Power resources --- Energy conservation

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This multi-disciplinary book presents the most recent advances in exergy, energy, and environmental issues. Volume 2 focuses on fundamentals in the field and covers current problems, future needs, and prospects in the area of energy and environment from researchers worldwide. Based on some selected lectures from the Eleventh International Exergy, Energy and Environmental Symposium (IEEES-11) and complemented by further invited contributions, this comprehensive set of contributions promote the exchange of new ideas and techniques in energy conversion and conservation in order to exchange best practices in "energetic efficiency." Included are fundamental and historical coverage of the green transportation and sustainable mobility sectors, especially regarding the development of sustainable technologies for thermal comforts and green transportation vehicles. Furthermore, contributions on renewable and sustainable energy sources, strategies for energy production, and the carbon-free society constitute an important part of this book.

Energy conservation. --- Conservation of energy resources --- Conservation of power resources --- Rational use of energy --- RUE (Rational use of energy) --- Conservation of natural resources --- Power resources --- Energy consumption --- Energy policy --- Recycling (Waste, etc.) --- Energy policy. --- Energy and state. --- Thermodynamics. --- Heat engineering. --- Heat transfer. --- Mass transfer. --- Fluid mechanics. --- Environmental sciences --- Energy Policy, Economics and Management. --- Engineering Thermodynamics, Heat and Mass Transfer. --- Engineering Fluid Dynamics. --- Environmental Social Sciences. --- Social aspects. --- Hydromechanics --- Continuum mechanics --- Mass transport (Physics) --- Thermodynamics --- Transport theory --- Heat transfer --- Thermal transfer --- Transmission of heat --- Energy transfer --- Heat --- Mechanical engineering --- Chemistry, Physical and theoretical --- Dynamics --- Mechanics --- Physics --- Heat-engines --- Quantum theory --- Energy and state --- State and energy --- Industrial policy --- Energy conservation --- Government policy