Effects of Stratification and Molecular Diffusivity on the Mixing Efficiency of Decaying Grid Turbulence /c by Chris Robert Rehmann PDF Download
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Author: Chris Robert Rehmann
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Author: Chris Robert Rehmann
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Book Description
Author: Kyunghwan Yoon
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 362
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Book Description
Author: Patrick Ryan Jackson
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
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Book Description
Author: Oleg G. Bakunin
Publisher: Springer Science & Business Media
ISBN: 3540682228
Category : Science
Languages : en
Pages : 269
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Book Description
This book is intended to serve as an introduction to the multidisciplinary ?eld of anomalous diffusion in complex systems such as turbulent plasma, convective rolls, zonal ?ow systems, stochastic magnetic ?elds, etc. In spite of its great importance, turbulent transport has received comparatively little treatment in published mo- graphs. This book attempts a comprehensive description of the scaling approach to turbulent diffusion. From the methodological point of view, the book focuses on the general use of correlation estimates, quasilinear equations, and continuous time random walk - proach. I provide a detailed structure of some derivations when they may be useful for more general purposes. Correlation methods are ?exible tools to obtain tra- port scalings that give priority to the richness of ingredients in a physical pr- lem. The mathematical description developed here is not meant to provide a set of “recipes” for hydrodynamical turbulence or plasma turbulence; rather, it serves to develop the reader’s physical intuition and understanding of the correlation mec- nisms involved.
Author: Robert Jason Hearst
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Guenther Wolfgang Ebert
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Book Description
Mixing is a common feature of stratified fluids. In stratified fluids the density varies with the height. This is true for the most fluids in geophysical environments, like lakes, the atmosphere or the ocean. Turbulent mixing plays a crucial role for the overall energy budget of the earth and has therefore an huge impact on the global climate. By introducing the mixing efficiency, it is possible to quantify mixing. It is defined as the ratio of gain of potential energy to the injection of mechanical energy. In the ocean energy provided by tidal forces leads to turbulence and thus highly dense water is lifted up from the deep sea to the surface. For this process, a mixing efficiency of 0.2 is estimated. Until now it is not completely understood how this high value can be achieved. Thus we measured the mixing efficiency by using a Couette-Taylor system, which can produce steady-state homogeneous turbulence. This is similar to what we find in the ocean. The Couette-Taylor system consists of two concentric cylinders that can be rotated independently. In between a stratified fluid is filled using salt as a stratifying agent. In the laboratory experiment, we obtained mixing efficiencies in the order of 0.001 as a result. Moreover we found that the mixing efficiency decreases with decreasing stratification like previous laboratory experiments have shown. As this value is two orders of magnitude smaller than what we find in the ocean, further studies will be necessary.
Author: George Chris Truesdell
Publisher:
ISBN:
Category :
Languages : en
Pages : 632
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Author:
Publisher:
ISBN:
Category : Space environment
Languages : en
Pages : 1100
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Book Description
Space simulation - conference.
Author: M. Samimy
Publisher: Cambridge University Press
ISBN: 9780521535007
Category : Science
Languages : en
Pages : 128
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Book Description
The visualization of fluid flow has played a major role in the development of fluid dynamics and its applications, from the evolution of flight to tracking weather, and understanding the flow of blood. The Fluid Dynamics Division of the American Physical Society sponsors an annual competition for outstanding images of fluid flow. This volume includes a selection of winners from 1985 to the present. Each image is accompanied by some explanatory text, making the volume an important acquisition for anyone involved in fluid flow research.
Author: H. Lee Willis
Publisher: CRC Press
ISBN: 9781420030310
Category : Technology & Engineering
Languages : en
Pages : 1246
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Book Description
Providing more than twice the content of the original edition, this new edition is the premier source on the selection, development, and provision of safe, high-quality, and cost-effective electric utility distribution systems, and it promises vast improvements in system reliability and layout by spanning every aspect of system planning including load forecasting, scheduling, performance, and economics. Responding to the evolving needs of electric utilities, Power Distribution Planning Reference Book presents an abundance of real-world examples, procedural and managerial issues, and engineering and analytical methodologies that are crucial to efficient and enhanced system performance.
