Low-dimensional Models for Subcritical Turbulence in Channel Flow
Author : Michael Rath
Publisher :
Page : pages
File Size : 38,18 MB
Release : 2018
Category :
ISBN :
Author : Michael Rath
Publisher :
Page : pages
File Size : 38,18 MB
Release : 2018
Category :
ISBN :
Author : Michael Rath
Publisher :
Page : 0 pages
File Size : 32,14 MB
Release : 2018
Category :
ISBN :
Author : Jeffrey Scott Baggett
Publisher :
Page : 22 pages
File Size : 26,76 MB
Release : 1996
Category : Shear flow
ISBN :
Author : Peter J. Schmid
Publisher : Springer Science & Business Media
Page : 561 pages
File Size : 31,75 MB
Release : 2012-12-06
Category : Science
ISBN : 1461301858
A detailed look at some of the more modern issues of hydrodynamic stability, including transient growth, eigenvalue spectra, secondary instability. It presents analytical results and numerical simulations, linear and selected nonlinear stability methods. By including classical results as well as recent developments in the field of hydrodynamic stability and transition, the book can be used as a textbook for an introductory, graduate-level course in stability theory or for a special-topics fluids course. It is equally of value as a reference for researchers in the field of hydrodynamic stability theory or with an interest in recent developments in fluid dynamics. Stability theory has seen a rapid development over the past decade, this book includes such new developments as direct numerical simulations of transition to turbulence and linear analysis based on the initial-value problem.
Author : Jean Piquet
Publisher : Springer Science & Business Media
Page : 767 pages
File Size : 34,83 MB
Release : 2013-04-17
Category : 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 : Ahmet C. Omurtag
Publisher :
Page : pages
File Size : 32,62 MB
Release : 1998
Category :
ISBN :
Author : Willem Cazemier
Publisher :
Page : 107 pages
File Size : 28,93 MB
Release : 1997
Category :
ISBN : 9789036706827
Author : Tom Mullin
Publisher : Springer Science & Business Media
Page : 335 pages
File Size : 39,75 MB
Release : 2005-12-28
Category : Technology & Engineering
ISBN : 1402040490
An exciting new direction in hydrodynamic stability theory and the transition to turbulence is concerned with the role of disconnected states or finite amplitude solutions in the evolution of disorder in fluid flows. This volume contains refereed papers presented at the IUTAM/LMS sponsored symposium on "Non-Uniqueness of Solutions to the Navier-Stokes equations and their Connection with Laminar-Turbulent Transition" held in Bristol 2004. Theoreticians and experimentalists gathered to discuss developments in understanding both the onset and collapse of disordered motion in shear flows such as those found in pipes and channels. The central objective of the symposium was to discuss the increasing amount of experimental and numerical evidence for finite amplitude solutions to the Navier-Stokes equations and to set the work into a modern theoretical context. The participants included many of the leading authorities in the subject and this volume captures much of the flavour of the resulting stimulating and lively discussions.
Author : Mohamed Gad-el-Hak
Publisher : World Scientific
Page : 445 pages
File Size : 12,32 MB
Release : 2006
Category : Technology & Engineering
ISBN : 9812564705
This volume contains articles based on lectures given at the Workshop on Transition and Turbulence Control, hosted by the Institute for Mathematical Sciences, National University of Singapore, 8-10 December 2004. The lecturers included 13 of the world's foremost experts in the control of transitioning and turbulent flows. The chapters cover a wide range of subjects in the broad area of flow control, and will be useful to researchers working in this area in academia, government laboratories and industry. The coverage includes control theory, passive, active and reactive methods for controlling transitional and turbulent wall-bounded flows, noise suppression and mixing enhancement of supersonic turbulent jets, compliant coatings, modern flow diagnostic systems, and swept wing instabilities.
Author : D. Laurence
Publisher : Elsevier
Page : 975 pages
File Size : 31,11 MB
Release : 1999-04-14
Category : Science
ISBN : 0080530982
These proceedings contain the papers presented at the 4th International Symposium on Engineering Turbulence Modelling and Measurements held at Ajaccio, Corsica, France from 24-26 May 1999. It follows three previous conferences on the topic of engineering turbulence modelling and measurements. The purpose of this series of symposia is to provide a forum for presenting and discussing new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. Turbulence is still one of the key issues in tackling engineering flow problems. As powerful computers and accurate numerical methods are now available for solving the flow equations, and since engineering applications nearly always involve turbulence effects, the reliability of CFD analysis depends more and more on the performance of the turbulence models. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulent momentum, heat and mass transfer. For the understanding of turbulence phenomena, experiments are indispensable, but they are equally important for providing data for the development and testing of turbulence models and hence for CFD software validation.