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| Author | : Alexandre Joël Chorin |
| Publisher | : Forgotten Books |
| Total Pages | : 50 |
| Release | : 2018-02-06 |
| Genre | : Science |
| ISBN | : 9780267964321 |
Download Inertial Range Flow and Turbulent Cascades (Classic Reprint) Book in PDF, ePub and Kindle
Excerpt from Inertial Range Flow and Turbulent Cascades The study of the inertial and dissipation ranges is a sounder undertaking. Roughly speaking, energy reaches these ranges after a number of non-linear interactions; the influence of the boundary and initial conditions is no longer appreciable; over most of the flow the spectrum becomes independent of x and can be expected to embody an intrinsic property of turbulence. It is of course a task of a theory of turbulence to provide a more credible explanation of this lack of dependence between the several parts of the spectrum. When the Reynolds number is sufficiently large the inertial range is of considerable extent, and its influence on possible eddy coefficients is dominant. (see e.g. [11] and a forthcoming paper by the present author.) The present paper is devoted to the study of the inertial range. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
| Author | : Alexandre Joel Chorin |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1969 |
| Genre | : Fluid dynamics |
| ISBN | : |
Download Inertial Range Flow and Turbulent Cascades Book in PDF, ePub and Kindle
| Author | : Jean Mathieu |
| Publisher | : Cambridge University Press |
| Total Pages | : 388 |
| Release | : 2000-06-26 |
| Genre | : Science |
| ISBN | : 9780521775380 |
Download An Introduction to Turbulent Flow Book in PDF, ePub and Kindle
Most natural and industrial flows are turbulent. The atmosphere and oceans, automobile and aircraft engines, all provide examples of this ubiquitous phenomenon. In recent years, turbulence has become a very lively area of scientific research and application, attracting many newcomers who need a basic introduction to the subject. An Introduction to Turbulent Flow, first published in 2000, offers a solid grounding in the subject of turbulence, developing both physical insight and the mathematical framework needed to express the theory. It begins with a review of the physical nature of turbulence, statistical tools, and space and time scales of turbulence. Basic theory is presented next, illustrated by examples of simple turbulent flows and developed through classical models of jets, wakes, and boundary layers. A deeper understanding of turbulence dynamics is provided by spectral analysis and its applications. The final chapter introduces the numerical simulation of turbulent flows. This well-balanced text will interest graduate students in engineering, applied mathematics, and the physical sciences.
| Author | : Robert H. Kraichnan |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 1967 |
| Genre | : |
| ISBN | : |
Download Inertial Ranges in Two-dimensional Turbulence Book in PDF, ePub and Kindle
Two-dimensional turbulence has both kinetic energy and mean-square vorticity as inviscid constants of motion. Consequently it admits two formal inertial ranges, E(k) is approx. (epsilon to the 2/3 power) k to the -5/3 power and E(k) is approx. (eta to the 2/3 power) k to the -3rd power, where epsilon is the rate of cascade of kinetic energy per unit mass, eta is the rate of cascade of mean-square vorticity, and the kinetic energy per unit mass is the integral from 0 to infinity E(k)dk. The -5/3 range is found to entail backward energy cascade, from higher to lower wavenumbers k, together with zero vorticity flow. The -3 range gives an upward vorticity flow and zero energy flow. The paradox in these results is resolved by the irreducibly triangular nature of the elementary wavenumber-interactions. The formal -3 range gives a nonlocal cascade and consequently must be modified by logarithmic factors. If energy is fed in at a constant rate to a band of wavenumbers approx. k sub i and the Reynolds number is large, it is conjectured that a quasisteady state results with a -5/3 range for k “k sub i and a -3 range for k” k sub i, up to the viscous cut-off. The total kinetic energy increases steadily with time as the - 5/3 range pushes to ever-lower k, until scales the size of the entire fluid are strongly excited. The rate of energy dissipation by viscosity decreases to zero if kinematic viscosity is decreased to zero with other parameters unchanged.
| Author | : Mikhael Gorokhovski |
| Publisher | : Springer |
| Total Pages | : 294 |
| Release | : 2019-05-21 |
| Genre | : Technology & Engineering |
| ISBN | : 3030125475 |
Download Turbulent Cascades II Book in PDF, ePub and Kindle
Gathering contributions by the most prominent researchers in a highly specialised field, this proceedings volume clarifies selected aspects of the physics of turbulent cascades and their statistical universalities under complex stationary and non-homogeneous conditions. Here, these conditions are induced by the presence of a gas/liquid interface, inertial particles, strong shear, rotation, MHD and stratification. By proposing different ways to model turbulence effects under these complex conditions, the book will be of considerable interest not only to academic researchers, but also to specialists and junior researchers in the domain of propulsion and power, as well as those whose work involves various applications related to atmospheric, oceanic and planetary physics.
| Author | : Marcel Lesieur |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 290 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9400935455 |
Download Turbulence in Fluids Book in PDF, ePub and Kindle
Turbulence is a dangerous topic which is often at the origin of serious fights in the scientific meetings devoted to it since it represents extremely different points of view, all of which have in common their complexity, as well as an inability to solve the problem. It is even difficult to agree on what exactly is the problem to be solved. Extremely schematically, two opposing points of view have been advocated during these last ten years: the first one is "statistical", and tries to model the evolution of averaged quantities of the flow. This com has followed the glorious trail of Taylor and Kolmogorov, munity, which believes in the phenomenology of cascades, and strongly disputes the possibility of any coherence or order associated to turbulence. On the other bank of the river stands the "coherence among chaos" community, which considers turbulence from a purely deterministic po int of view, by studying either the behaviour of dynamical systems, or the stability of flows in various situations. To this community are also associated the experimentalists who seek to identify coherent structures in shear flows.
| Author | : Arkady Tsinober |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 171 |
| Release | : 2013-08-23 |
| Genre | : Technology & Engineering |
| ISBN | : 9400771800 |
Download The Essence of Turbulence as a Physical Phenomenon Book in PDF, ePub and Kindle
This book critically reexamines what turbulence really is, from a fundamental point of view and based on observations from nature, laboratories, and direct numerical simulations. It includes critical assessments and a comparative analysis of the key developments, their evolution and failures, along with key misconceptions and outdated paradigms. The main emphasis is on conceptual and problematic aspects, physical phenomena, observations, misconceptions and unresolved issues rather than on conventional formalistic aspects, models, etc. Apart from the obvious fundamental importance of turbulent flows, this emphasis stems from the basic premise that without corresponding progress in fundamental aspects there is little chance for progress in applications such as drag reduction, mixing, control and modeling of turbulence. More generally, there is also a desperate need to grasp the physical fundamentals of the technological processes in which turbulence plays a central role.
| Author | : David Ting |
| Publisher | : Academic Press |
| Total Pages | : 258 |
| Release | : 2016-02-23 |
| Genre | : Science |
| ISBN | : 0128039833 |
Download Basics of Engineering Turbulence Book in PDF, ePub and Kindle
Basics of Engineering Turbulence introduces flow turbulence to engineers and engineering students who have a fluid dynamics background, but do not have advanced knowledge on the subject. It covers the basic characteristics of flow turbulence in terms of its many scales. The author uses a pedagogical approach to help readers better understand the fundamentals of turbulence scales, especially how they are derived through the order of magnitude analysis. This book is intended for those who have an interest in flowing fluids. It provides some background, though of limited scope, on everyday flow turbulence, especially in engineering applications. The book begins with the ‘basics’ of turbulence which is necessary for any reader being introduced to the subject, followed by several examples of turbulence in engineering applications. This overall approach gives readers all they need to grasp both the fundamentals of turbulence and its applications in practical instances. Focuses on the basics of turbulence for applications in engineering and industrial settings Provides an understanding of concepts that are often challenging, such as energy distribution among the turbulent structures, the effective diffusivity, and the theory behind turbulence scales Offers a user-friendly approach with clear-and-concise explanations and illustrations, as well as end-of-chapter problems
| Author | : Arkady Tsinober |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 475 |
| Release | : 2009-08-29 |
| Genre | : Technology & Engineering |
| ISBN | : 904813174X |
Download An Informal Conceptual Introduction to Turbulence Book in PDF, ePub and Kindle
This fully revised second edition focuses on physical phenomena and observations in turbulence, and is focused on reversing misconceptions and ill-defined concepts. New topics include ergodicity, Eulerian versus Lagrangian descriptions, theory validation, and anomalous scaling.
| Author | : T. Dracos |
| Publisher | : Birkhäuser |
| Total Pages | : 409 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 3034885857 |
Download New Approaches and Concepts in Turbulence Book in PDF, ePub and Kindle
This book contains the proceedings of a colloquium held in Monte Verit from September 9-13, 1991. Special care has been taken to devote adequate space to the scientific discussions, which claimed about half of the time available. Scientists from all over the world presented their views on the importance of kinematic properties, topology and fractal geometry, and on the dynamic behaviour of turbulent flows. They debated the importance of coherent structures and the possibility to incorporate these in the statistical theory of turbulence, as well as their significance for the reduction of the degrees of freedom and the prospective of dynamical systems and chaos approaches to the problem of turbulence. Also under discussion was the relevance of these new approaches to the study of the instability and the origin of turbulence, and the importance of numerical and physical experiments in improving the understanding of turbulence.
