A Critical Comparison Of Turbulence Models For Homogeneous Shear Flows In A Rotating Frame
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Author | : Charles G. Speziale |
Publisher | : |
Total Pages | : |
Release | : 1989 |
Genre | : Computational fluid dynamics |
ISBN | : |
Download A Critical Comparison of Turbulence Models for Homogeneous Shear Flows in a Rotating Frame Book in PDF, Epub and Kindle
Author | : Institute for Computer Applications in Science and Engineering |
Publisher | : |
Total Pages | : 28 |
Release | : 1989 |
Genre | : |
ISBN | : |
Download A Critical Comparison of Turbulence Models for Homogeneous Shear Flows in a Rotating Frame Book in PDF, Epub and Kindle
Author | : Davinder Bhardwaj |
Publisher | : |
Total Pages | : 70 |
Release | : 1991 |
Genre | : Shear flow |
ISBN | : |
Download Investigation of Turbulence Models for Homogeneous Shear Flows in a Rotating Frame Book in PDF, Epub and Kindle
Author | : Jean Piquet |
Publisher | : Springer Science & Business Media |
Total Pages | : 767 |
Release | : 2013-04-17 |
Genre | : Technology & Engineering |
ISBN | : 3662035596 |
Download Turbulent Flows Book in PDF, Epub and Kindle
obtained are still severely limited to low Reynolds numbers (about only one decade better than direct numerical simulations), and the interpretation of such calculations for complex, curved geometries is still unclear. It is evident that a lot of work (and a very significant increase in available computing power) is required before such methods can be adopted in daily's engineering practice. I hope to l"Cport on all these topics in a near future. The book is divided into six chapters, each· chapter in subchapters, sections and subsections. The first part is introduced by Chapter 1 which summarizes the equations of fluid mechanies, it is developed in C~apters 2 to 4 devoted to the construction of turbulence models. What has been called "engineering methods" is considered in Chapter 2 where the Reynolds averaged equations al"C established and the closure problem studied (§1-3). A first detailed study of homogeneous turbulent flows follows (§4). It includes a review of available experimental data and their modeling. The eddy viscosity concept is analyzed in §5 with the l"Csulting ~alar-transport equation models such as the famous K-e model. Reynolds stl"Css models (Chapter 4) require a preliminary consideration of two-point turbulence concepts which are developed in Chapter 3 devoted to homogeneous turbulence. We review the two-point moments of velocity fields and their spectral transforms (§ 1), their general dynamics (§2) with the particular case of homogeneous, isotropie turbulence (§3) whel"C the so-called Kolmogorov's assumptions are discussed at length.
Author | : Tsan-Hsing Shih |
Publisher | : |
Total Pages | : 68 |
Release | : 1991 |
Genre | : Turbulence |
ISBN | : |
Download A Critical Comparison of Second Order Closures with Direct Numerical Simulation of Homogeneous Turbulence Book in PDF, Epub and Kindle
Author | : Manuel D. Salas |
Publisher | : Springer Science & Business Media |
Total Pages | : 385 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9401147248 |
Download Modeling Complex Turbulent Flows Book in PDF, Epub and Kindle
Turbulence modeling both addresses a fundamental problem in physics, 'the last great unsolved problem of classical physics,' and has far-reaching importance in the solution of difficult practical problems from aeronautical engineering to dynamic meteorology. However, the growth of supercom puter facilities has recently caused an apparent shift in the focus of tur bulence research from modeling to direct numerical simulation (DNS) and large eddy simulation (LES). This shift in emphasis comes at a time when claims are being made in the world around us that scientific analysis itself will shortly be transformed or replaced by a more powerful 'paradigm' based on massive computations and sophisticated visualization. Although this viewpoint has not lacked ar ticulate and influential advocates, these claims can at best only be judged premature. After all, as one computational researcher lamented, 'the com puter only does what I tell it to do, and not what I want it to do. ' In turbulence research, the initial speculation that computational meth ods would replace not only model-based computations but even experimen tal measurements, have not come close to fulfillment. It is becoming clear that computational methods and model development are equal partners in turbulence research: DNS and LES remain valuable tools for suggesting and validating models, while turbulence models continue to be the preferred tool for practical computations. We believed that a symposium which would reaffirm the practical and scientific importance of turbulence modeling was both necessary and timely.
Author | : Paul A. Libby |
Publisher | : CRC Press |
Total Pages | : 370 |
Release | : 1996-10-01 |
Genre | : Technology & Engineering |
ISBN | : 9781560321002 |
Download An Introduction To Turbulence Book in PDF, Epub and Kindle
Beginning with a description of turbulence, its various manifestations, and a brief history of study, this text also incorporates modern perspectives on turbulence. The text also covers such topics as intermittency and the resultant conditional sampling and averaging of turbulent flows, the role of large scale computation of the fundamental equations of fluid mechanics in providing information on variables, and asymptotic methods which are used to expose important features of turbulent flows. Meaningful exercises are included in every section.
Author | : Steven M. Parks |
Publisher | : |
Total Pages | : 468 |
Release | : 1997 |
Genre | : Closure of functions |
ISBN | : |
Download Relaxation Model for Homogeneous Turbulent Flows Book in PDF, Epub and Kindle
Author | : F. Martelli |
Publisher | : Elsevier |
Total Pages | : 1012 |
Release | : 2014-06-28 |
Genre | : Technology & Engineering |
ISBN | : 1483298558 |
Download Engineering Turbulence Modelling and Experiments - 2 Book in PDF, Epub and Kindle
Today understanding turbulence is one of the key issues in tackling flow problems in engineering. Powerful computers and numerical methods are now available for solving flow equations, but the simulation of turbulence effects, which are nearly always important in practice, are still at an early stage of development. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulence momentum, heat and mass transfer. The 89 papers, including 5 invited papers, in this volume present and discuss new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The high standard of the contributions on the developing and testing of turbulent models attests to the world-wide interest this domain is currently attracting from researchers.
Author | : |
Publisher | : |
Total Pages | : 422 |
Release | : |
Genre | : Fluid dynamics |
ISBN | : |
Download Symposium on Turbulent Shear Flows Book in PDF, Epub and Kindle