Turbulence Modeling of Single and Two Phase Curved Channel Flows
Author | : Farzad Pourahmadi |
Publisher | : |
Total Pages | : 622 |
Release | : 1982 |
Genre | : Dissertations, Academic |
ISBN | : |
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Author | : Farzad Pourahmadi |
Publisher | : |
Total Pages | : 622 |
Release | : 1982 |
Genre | : Dissertations, Academic |
ISBN | : |
Author | : Ching Jen Chen |
Publisher | : CRC Press |
Total Pages | : 312 |
Release | : 1997-12-01 |
Genre | : Technology & Engineering |
ISBN | : 9781560324058 |
Focuses on the second-order turbulence-closure model and its applications to engineering problems. Topics include turbulent motion and the averaging process, near-wall turbulence, applications of turbulence models, and turbulent buoyant flows.
Author | : Jean Piquet |
Publisher | : Springer Science & Business Media |
Total Pages | : 767 |
Release | : 2013-04-17 |
Genre | : Technology & Engineering |
ISBN | : 3662035596 |
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 | : M.Y. Hussaini |
Publisher | : Springer Science & Business Media |
Total Pages | : 626 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461229561 |
This volume contains the proceedings of the Workshop on In stability, Transition and Turbulence, sponsored by the Institute for Computer Applications in Science and Engineering (ICASE) and the NASA Langley Research Center (LaRC), during July 8 to August 2, 1991. This is the second workshop in the series on the subject. The first was held in 1989, and its proceedings were published by Springer-Verlag under the title "Instability and Transition" edited by M. Y. Hussaini and R. G. Voigt. The objectives of these work shops are to i) expose the academic community to current technologically im portant issues of transition and turbulence in shear flows over the entire speed range, ii) acquaint the academic community with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these capabilities, and iii) accelerate progress in elucidating the fundamental phenomena of transition and turbulence, leading to improved transition and turbulence modeling in design methodologies. The research areas covered in these proceedings include receptiv ity and roughness, nonlinear theories of transition, numerical simu lation of spatially evolving flows, modelling of transitional and fully turbulent flows as well as some experiments on instability and tran sition. In addition a one-day mini-symposium was held to discuss 1 recent and planned experiments on turbulent flow over a backward facing step.
Author | : Hiroji Nakagawa |
Publisher | : Routledge |
Total Pages | : 246 |
Release | : 2017-10-02 |
Genre | : Technology & Engineering |
ISBN | : 1351406604 |
A review of open channel turbulence, focusing especially on certain features stemming from the presence of the free surface and the bed of a river. Part one presents the statistical theory of turbulence; Part two addresses the coherent structures in open-channel flows and boundary layers.
Author | : Thomas B. Gatski |
Publisher | : Oxford University Press |
Total Pages | : 329 |
Release | : 1996-07-11 |
Genre | : Science |
ISBN | : 0195355563 |
This book provides students and researchers in fluid engineering with an up-to-date overview of turbulent flow research in the areas of simulation and modeling. A key element of the book is the systematic, rational development of turbulence closure models and related aspects of modern turbulent flow theory and prediction. Starting with a review of the spectral dynamics of homogenous and inhomogeneous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modeling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.
Author | : Chien-Pin Chen |
Publisher | : |
Total Pages | : 544 |
Release | : 1983 |
Genre | : Fluid dynamics |
ISBN | : |
Author | : Wolfgang Rodi |
Publisher | : CRC Press |
Total Pages | : 124 |
Release | : 1993-01-01 |
Genre | : Technology & Engineering |
ISBN | : 9789054101505 |
This book provides an introduction to the subject of turbulence modelling in a form easy to understand for anybody with a basic background in fluid mechanics, and it summarizes the present state of the art. Individual models are described and examined for the merits and demerits which range from the simple Prandtl mixing length theory to complex second order closure schemes.