Dynamical System Analysis of Reynolds Stress Closure Equations
Author: Sharath S. Girimaji
Publisher:
Published: 1997
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Sharath S. Girimaji
Publisher:
Published: 1997
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. National Aeronautics and Space Administration
Publisher:
Published: 1998*
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Jovan Jovanovic
Publisher: Springer Science & Business Media
Published: 2013-03-09
Total Pages: 145
ISBN-13: 3662104113
DOWNLOAD EBOOKThis short but complicated book is very demanding of any reader. The scope and style employed preserve the nature of its subject: the turbulence phe nomena in gas and liquid flows which are believed to occur at sufficiently high Reynolds numbers. Since at first glance the field of interest is chaotic, time-dependent and three-dimensional, spread over a wide range of scales, sta tistical treatment is convenient rather than a description of fine details which are not of importance in the first place. When coupled to the basic conserva tion laws of fluid flow, such treatment, however, leads to an unclosed system of equations: a consequence termed, in the scientific community, the closure problem. This is the central and still unresolved issue of turbulence which emphasizes its chief peculiarity: our inability to do reliable predictions even on the global flow behavior. The book attempts to cope with this difficult task by introducing promising mathematical tools which permit an insight into the basic mechanisms involved. The prime objective is to shed enough light, but not necessarily the entire truth, on the turbulence closure problem. For many applications it is sufficient to know the direction in which to go and what to do in order to arrive at a fast and practical solution at minimum cost. The book is not written for easy and attractive reading.
Author:
Publisher:
Published: 1997
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKAuthor: Kemal Hanjalić
Publisher: Cambridge University Press
Published: 2011-10-20
Total Pages: 403
ISBN-13: 0521845750
DOWNLOAD EBOOKA comprehensive account of advanced RANS turbulence models including numerous applications to complex flows in engineering and the environment.
Author: Bernhard Eisfeld
Publisher: Springer
Published: 2015-03-24
Total Pages: 106
ISBN-13: 331915639X
DOWNLOAD EBOOKThis book presents recent progress in the application of RANS turbulence models based on the Reynolds stress transport equations. A variety of models has been implemented by different groups into different flow solvers and applied to external as well as to turbo machinery flows. Comparisons between the models allow an assessment of their performance in different flow conditions. The results demonstrate the general applicability of differential Reynolds stress models to separating flows in industrial aerodynamics.
Author: Lawrence Sirovich
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 375
ISBN-13: 1461231566
DOWNLOAD EBOOKThis collection of articles has its origin in a meeting which took place June 12-15, 1989, on the grounds of Salve Regina College in Newport, Rhode Island. The meeting was blessed by beautiful, balmy weather and an idyllic setting. The sessions themselves took place in Ochre Court, one of the elegant and stately old summer cottages for which Newport is acclaimed. Lectures were presented in the grand ballroom overlooking the famous Cliff Walk and Block Island Sound. Counter to general belief, the pleasant surroundings did not appear to encourage truancy or in any other way diminish the quality of the meeting. On the contrary, for the four days of the meeting there was a high level of excitement and optimism about the new perspectives in turbulence, a tone that carried over to lively dinner and evening discussions. The participants represented a broad range of backgrounds, extending from pure mathemat ics to experimental engineering. A dialogue began with the first speakers which cut across the boundaries and gave to the meeting a mood of unity which persisted.
Author: Javier Jiménez
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 359
ISBN-13: 1461537509
DOWNLOAD EBOOKThe aim of this Advanced Research Workshop was to bring together Physicists, Applied Mathematicians and Fluid Dynamicists, including very specially experimentalists, to review the available knowledge on the global structural aspects of turbulent flows, with an especial emphasis on open systems, and to try to reach a consensus on their possible relationship to recent advances in the understanding of the behaviour of low dimensional dynamical systems and amplitude equations. A lot has been learned during recent years on the non-equilibrium behaviour of low dimen sional dynamical systems, including some fluid flows (Rayleigh-Benard, Taylor-Couette, etc. ). These are mostly closed flows and many of the global structural features of the low dimensional systems have been observed in them, including chaotic behaviour, period doubling, intermit tency, etc. . It has also been shown that some of these flows are intrinsically low dimensional, which accounts for much of the observed similarities. Open flows seem to be different, and experimental observations point to an intrinsic high dimensionality. However, some of the tran sitional features of the low dimensional systems have been observed in them, specially in the intermittent behaviour of subcritical flows (pipes, channels, boundary layers with suction, etc. ), and in the large scale geometry of coherent structures of free shear flows (mixing layers, jets and wakes).
Author: László Könözsy
Publisher: Springer Nature
Published: 2020-12-01
Total Pages: 517
ISBN-13: 3030606031
DOWNLOAD EBOOKThis self-contained, interdisciplinary book encompasses mathematics, physics, computer programming, analytical solutions and numerical modelling, industrial computational fluid dynamics (CFD), academic benchmark problems and engineering applications in conjunction with the research field of anisotropic turbulence. It focuses on theoretical approaches, computational examples and numerical simulations to demonstrate the strength of a new hypothesis and anisotropic turbulence modelling approach for academic benchmark problems and industrially relevant engineering applications. This book contains MATLAB codes, and C programming language based User-Defined Function (UDF) codes which can be compiled in the ANSYS-FLUENT environment. The computer codes help to understand and use efficiently a new concept which can also be implemented in any other software packages. The simulation results are compared to classical analytical solutions and experimental data taken from the literature. A particular attention is paid to how to obtain accurate results within a reasonable computational time for wide range of benchmark problems. The provided examples and programming techniques help graduate and postgraduate students, engineers and researchers to further develop their technical skills and knowledge.
Author: Morris W. Rubesin
Publisher:
Published: 1973
Total Pages: 38
ISBN-13:
DOWNLOAD EBOOK