New Results in Numerical and Experimental Fluid Mechanics VII

New Results in Numerical and Experimental Fluid Mechanics VII

Author: Andreas Dillmann

Publisher: Springer Science & Business Media

Published: 2010-10-05

Total Pages: 629

ISBN-13: 3642142435

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th This volume contains the papers presented at the 16 DGLR/STAB-Symposium held at the Eurogress Aachen and organized by RWTH Aachen University, Germany, November, 3 - 4, 2008. STAB is the German Aerospace Aerodynamics Association, founded towards the end of the 1970's, whereas DGLR is the German Society for Aeronautics and Astronautics (Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal Oberth e.V.). The mission of STAB is to foster development and acceptance of the discipline “Aerodynamics” in Germany. One of its general guidelines is to concentrate resources and know-how in the involved institutions and to avoid duplication in research work as much as possible. Nowadays, this is more necessary than ever. The experience made in the past makes it easier now, to obtain new knowledge for solving today's and tomorrow's problems. STAB unites German scientists and engineers from universities, research-establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics for aerospace and other applications. This has always been the basis of numerous common research activities sponsored by different funding agencies. Since 1986 the symposium has taken place at different locations in Germany every two years. In between STAB workshops regularly take place at the DLR in Göttingen.


Current Themes in Engineering Science 2007

Current Themes in Engineering Science 2007

Author: A.M. Korsunsky

Publisher: American Institute of Physics

Published: 2008-09-24

Total Pages: 160

ISBN-13:

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All papers were peer-reviewed. This volume contains selected articles contributed by the participants of the World Congress on Engineering (WCE) that was organized by the International Association of Engineers (IAEng) and took place in London, UK on 2-4 July, 2007. Modern engineering science covers a vast expanse of research activities that underpin and support the development of technology, characterization and selection of materials and structures, system optimization and design, and safe exploitation throughout life cycles of components and assemblies serving the society’s needs for manufacturing, transport, energy, food, health, security, and virtually every other aspect of public life. Modern engineering science is highly interdisciplinary, actively exploiting interfaces with applied mathematics and statistics, physics, chemistry, materials science, biological sciences and medicine, computing, and many other subjects. Almost every topic of research pursued in natural sciences and mathematics can be found to have an engineering dimension to it, provided the results find an application in practical and widespread use. No conference or symposium, nor even a World Congress may possibly provide a full reflection of the variety and richness of research activities in engineering sciences. Under the auspices of WCE 2007, fifteen subject conferences took place on the topics ranging from systems biology to financial engineering. Proceedings of individual conferences published by IAEng contain all papers presented at the conference. The purpose of the present volume, however, is different: it aims to identify and bring together under the same cover articles on some of the most interesting current themes in engineering science, contributed by the participants of various conferences that together constituted WCE 2007. Although the choice of topics that emerged was therefore necessarily subjective, it is hoped, nevertheless, that it provides a glimpse of the vast range of interests pursued by the modern engineering science.


Turbulent Premixed Flames

Turbulent Premixed Flames

Author: Nedunchezhian Swaminathan

Publisher: Cambridge University Press

Published: 2011-04-25

Total Pages: 447

ISBN-13: 1139498584

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A work on turbulent premixed combustion is important because of increased concern about the environmental impact of combustion and the search for new combustion concepts and technologies. An improved understanding of lean fuel turbulent premixed flames must play a central role in the fundamental science of these new concepts. Lean premixed flames have the potential to offer ultra-low emission levels, but they are notoriously susceptible to combustion oscillations. Thus, sophisticated control measures are inevitably required. The editors' intent is to set out the modeling aspects in the field of turbulent premixed combustion. Good progress has been made on this topic, and this cohesive volume contains contributions from international experts on various subtopics of the lean premixed flame problem.


TILDA: Towards Industrial LES/DNS in Aeronautics

TILDA: Towards Industrial LES/DNS in Aeronautics

Author: Charles Hirsch

Publisher: Springer Nature

Published: 2021-06-28

Total Pages: 550

ISBN-13: 3030620484

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This book offers detailed insights into new methods for high-fidelity CFD, and their industrially relevant applications in aeronautics. It reports on the H2020 TILDA project, funded by the European Union in 2015-2018. The respective chapters demonstrate the potential of high-order methods for enabling more accurate predictions of non-linear, unsteady flows, ensuring enhanced reliability in CFD predictions. The book highlights industrially relevant findings and representative test cases on the development of high-order methods for unsteady turbulence simulations on unstructured grids; on the development of the LES/DNS methodology by means of multilevel, adaptive, fractal and similar approaches for applications on unstructured grids; and on leveraging existent large-scale HPC networks to facilitate the industrial applications of LES/DNS in daily practice. Furthermore, the book discusses multidisciplinary applications of high-order methods in the area of aero-acoustics. All in all, it offers timely insights into the application and performance of high-order methods for CFD, and an extensive reference guide for researchers, graduate students, and industrial engineers whose work involves CFD and turbulence modeling.


Large-Eddy Simulations of Turbulence

Large-Eddy Simulations of Turbulence

Author: M. Lesieur

Publisher: Cambridge University Press

Published: 2005-08-22

Total Pages: 240

ISBN-13: 9780521781244

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Large-Eddy Simulations of Turbulence is a reference for LES, direct numerical simulation and Reynolds-averaged Navier-Stokes simulation.


AIAA Journal

AIAA Journal

Author: American Institute of Aeronautics and Astronautics

Publisher:

Published: 1997

Total Pages: 850

ISBN-13:

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Combustion Noise

Combustion Noise

Author: Anna Schwarz

Publisher: Springer Science & Business Media

Published: 2009-06-17

Total Pages: 304

ISBN-13: 3642020380

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November, 2008 Anna Schwarz, Johannes Janicka In the last thirty years noise emission has developed into a topic of increasing importance to society and economy. In ?elds such as air, road and rail traf?c, the control of noise emissions and development of associated noise-reduction techno- gies is a central requirement for social acceptance and economical competitiveness. The noise emission of combustion systems is a major part of the task of noise - duction. The following aspects motivate research: • Modern combustion chambers in technical combustion systems with low pol- tion exhausts are 5 - 8 dB louder compared to their predecessors. In the ope- tional state the noise pressure levels achieved can even be 10-15 dB louder. • High capacity torches in the chemical industry are usually placed at ground level because of the reasons of noise emissions instead of being placed at a height suitable for safety and security. • For airplanes the combustion emissions become a more and more important topic. The combustion instability and noise issues are one major obstacle for the introduction of green technologies as lean fuel combustion and premixed burners in aero-engines. The direct and indirect contribution of combustion noise to the overall core noise is still under discussion. However, it is clear that the core noise besides the fan tone will become an important noise source in future aero-engine designs. To further reduce the jet noise, geared ultra high bypass ratio fans are driven by only a few highly loaded turbine stages.