The Decay of Grid Generated Turbulence in a Two Layer Stratified Fluid PDF Download
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Author: Robert Lawson Amen
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 384
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Book Description
Author: Robert Lawson Amen
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 384
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Book Description
Author: P. A. Davidson
Publisher: Cambridge University Press
ISBN: 1107434343
Category : Science
Languages : en
Pages : 701
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Book Description
There are two recurring themes in astrophysical and geophysical fluid mechanics: waves and turbulence. This book investigates how turbulence responds to rotation, stratification or magnetic fields, identifying common themes, where they exist, as well as the essential differences which inevitably arise between different classes of flow. The discussion is developed from first principles, making the book suitable for graduate students as well as professional researchers. The author focuses first on the fundamentals and then progresses to such topics as the atmospheric boundary layer, turbulence in the upper atmosphere, turbulence in the core of the earth, zonal winds in the giant planets, turbulence within the interior of the sun, the solar wind, and turbulent flows in accretion discs. The book will appeal to engineers, geophysicists, astrophysicists and applied mathematicians who are interested in naturally occurring turbulent flows.
Author: S. M. Thompson
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 368
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Book Description
Author: H. J. S. Fernando
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
Stratified-fluid turbulence has become of major interest in geophysical fluid mechanics because of its importance in understanding many events related to the atmosphere-ocean system, for example the growth of turbulent mixed layers in the upper ocean or lower atmosphere. Oceanic and atmospheric turbulence is generated in several ways, for example from mean shear, convective heating and cooling, wave-breaking, etc., and the turbulence thus produced interacts with buoyancy forces to cause turbulent mixing. During oceanic wave-breaking, the turbulence is generated within a thin layer (of the thickness of the rm.s. wave amplitude) and is diffused downward toward the htermocline Kitaigorodskii (1979) has suggested that this process could be simulated in the laboratory by an oscillating grid in a density-stratified fluid. An isolated study of a single oceanic turbulence-generating event is an oversimplified attempt to understand the complex events occurring in the real ocean, where many different mechanisms interact; nevertheless, such a study may be of importance in gaining a general understanding of the mechanics of the entrainment process. In this paper, we report some of the features of a detailed study of turbulent entrainment both in linearly-stratified and in two-layer fluids when the turbulence is produces by an oscillating grid. The experimental results are compared with previous theoretical ideas.
Author: Kyunghwan Yoon
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 362
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Book Description
Author: Pierre Sagaut
Publisher: Springer
ISBN: 3319731629
Category : Science
Languages : en
Pages : 912
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Book Description
This book provides state-of-the-art results and theories in homogeneous turbulence, including anisotropy and compressibility effects with extension to quantum turbulence, magneto-hydodynamic turbulence and turbulence in non-newtonian fluids. Each chapter is devoted to a given type of interaction (strain, rotation, shear, etc.), and presents and compares experimental data, numerical results, analysis of the Reynolds stress budget equations and advanced multipoint spectral theories. The role of both linear and non-linear mechanisms is emphasized. The link between the statistical properties and the dynamics of coherent structures is also addressed. Despite its restriction to homogeneous turbulence, the book is of interest to all people working in turbulence, since the basic physical mechanisms which are present in all turbulent flows are explained. The reader will find a unified presentation of the results and a clear presentation of existing controversies. Special attention is given to bridge the results obtained in different research communities. Mathematical tools and advanced physical models are detailed in dedicated chapters.
Author: Roger Grimshaw
Publisher: Springer Science & Business Media
ISBN: 0306480247
Category : Science
Languages : en
Pages : 286
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Book Description
The dynamics of flows in density-stratified fluids has been and remains now an important topic for scientific enquiry. Such flows arise in many contexts, ranging from industrial settings to the oceanic and atmospheric environments. It is the latter topic which is the focus of this book. Both the ocean and atmosphere are characterised by the basic vertical density stratification, and this feature can affect the dynamics on all scales ranging from the micro-scale to the planetary scale. The aim of this book is to provide a “state-of-the-art” account of stratified flows as they are relevant to the ocean and atmosphere with a primary focus on meso-scale phenomena; that is, on phenomena whose time and space scales are such that the density stratification is a dominant effect, so that frictional and diffusive effects on the one hand and the effects of the earth’s rotation on the other hand can be regarded as of less importance. This in turn leads to an emphasis on internal waves.
Author: MOHAMED GAD-EL-HAK
Publisher: Springer Science & Business Media
ISBN: 3642837875
Category : Science
Languages : en
Pages : 611
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Book Description
One cannot overemphasize the importance of studying fluids in motion or at rest for a variety of scientific and engineering endeavors. Fluid mechanics as an art reaches back into antiquity, but its rational formulation is a relatively recent undertaking. Much of the physics of a particular flow situation can be understood by conducting appropriate experiments. Flow visualization techniques offer a useful tool to establish an overall picture of a flow field and to delineate broadly its salient features before embarking on more detailed quantitative measurements. Among the single-point measurements that are particularly difficult are those in separated flows, non-Newtonian fluids, rotating flows, and nuclear aerosols. Pressure, shear stress, vorticity, and heat transfer coefficient are also difficult quantities to measure, particularly for time-dependent flows. These and other special situations are among the topics covered in this volume. Each article emphasizes the development of a particular measuring technique. The topics covered were chosen because of their importance to the field, recent appeal, and potential for future development. The articles are comprehensive and coverage is pedagogical with a bias towards recent developments.
Author: Stephen M. Thompson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: P. A. Davidson
Publisher: Cambridge University Press
ISBN: 1107026865
Category : Science
Languages : en
Pages : 701
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Book Description
Starting from first principles, this graduate-level monograph discusses turbulent flow in a wide range of geophysical and astrophysical settings.
