Author: Charles G. SpezialePublisher:
ISBN:
Category :
Languages : en
Pages : 50
Book Description
A Review of Reynolds Stress Models for Turbulent Shear Flows
Author: Charles G. SpezialeTurbulent Flows
Author: Jean PiquetPublisher: Springer Science & Business Media
ISBN: 3662035596
Category : Technology & Engineering
Languages : en
Pages : 767
Book Description
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.
A Review of Reynolds Stress Models for Turbulent Shear Flows Final Report, Charles G. Speziale ICASE, March 1995
Author: Simulation and Modeling of Turbulent Flows
Author: Thomas B. GatskiPublisher: Oxford University Press
ISBN: 0195355563
Category : Science
Languages : en
Pages : 329
Book Description
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.
A Review of Near-wall Reynolds-stress Closures
Author: Evaluation of Reynolds Stress Turbulence Closures in Compressible Homogeneous Shear Flow
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Critical Assessment of Reynolds Stress Turbulence Models Using Homogeneous Flows
Author: Aamir ShabbirPublisher:
ISBN:
Category : Reynolds stress
Languages : en
Pages : 34
Book Description
A Critical Evaluation of Various Turbulence Models as Applied to Internal Fluid Flows
Author: M. NallasamyPublisher:
ISBN:
Category : Computational fluid dynamics
Languages : en
Pages : 80
Book Description
Nonlinear Reynolds Stress Model for Turbulent Shear Flows
Author: J. Michael BartonReynolds Stress Modeling of Turbulent Open-channel Flows
Author: Sung-Uk ChoiPublisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 116
Book Description
This book presents numerical simulations of three-dimensional turbulent open-channel flows. In the simulations, Reynolds-averaged Navier-Stokes equations are solved with the Reynolds stress model for turbulence closure. The overall solution strategy is the SIMPLER algorithm, and the power-law scheme is used to discretise the convection and diffusion terms in the governing equations. The Reynolds stress model is applied to rectangular open-channel flows, partly-vegetated open-channel flows, and compound open-channel flows. The simulated mean flow and turbulence structures including streamwise mean velocity, secondary currents, turbulence intensity, and Reynolds stress, are provided and compared with measure data in the literature. As shown in this book, these comparisons reveal that the proposed Reynolds stress model successfully predicts the mean flow and turbulence statistics of turbulent open-channel flows.