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Author : R. Camarero
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Large Eddy Simulation of Turbulent Flow Over a Backward Facing Step Using the Dynamic Mixed Model written by R. Camarero and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ravikanth Avancha
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (742 download)
Download or read book Large Eddy Simulation of the Turbulent Flow Past a Backward Facing Step written by Ravikanth Avancha and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat transfer and fluid mechanics of a turbulent separating and reattaching flow past a single-sided backward-facing step are studied using large eddy simulation. A fully coupled, low Mach number preconditioned, collocated-grid, central differenced, compressible, finite volume formulation was developed to conduct the simulations. A sixth-order compact filter was used to prevent pressure-velocity decoupling. A compressible version of the dynamic subgrid scale model was used to model the effects of the smaller eddies. Navier-Stokes characteristic boundary conditions designed by Poinsot and Lele were used to provide boundary conditions. The isothermal turbulent flow past the step, at a Reynolds number of 5,540 (based on the step height and upstream centerline velocity) and a Mach number of 0.006, was simulated to validate the formulation. Subsequently, the bottom wall downstream of the step was supplied with constant wall heat flux levels of 1.0, 2.0, and 3.0 kW/m2. The viscous sub-layer played a critical role in controlling the heat transfer rate. Streamwise and wall-normal turbulent heat fluxes were of the same order of magnitude. The Reynolds analogy did not hold in the recirculation region. However, the Stanton number profiles showed a striking similarity with the fluctuating skin-friction profiles.
Author : Stanford University. Thermosciences Division. Thermosciences Division
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.F/5 ( download)
Download or read book Large Eddy Simulation of Turbulent Confined Coannular Jets and Turbulent Flow Over a Backward Facing Step written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1995 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rainer Friedrich
Publisher : Springer Science & Business Media
ISBN 13 : 9781402020322
Total Pages : 676 pages
Book Rating : 4.0/5 (23 download)
Download or read book Direct and Large-Eddy Simulation V written by Rainer Friedrich and published by Springer Science & Business Media. This book was released on 2004-04-30 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fifth ERCOFfAC workshop 'Direct and Large-Eddy Simulation-5' (DLES-5) was held at the Munich University of Technology, August 27-29, 2003. It is part of a series of workshops that originated at the University of Surrey in 1994 with the intention to provide a forum for presentation and dis cussion of recent developments in the field of direct and large-eddy simula tion. Over the years the DLES-series has grown into a major international venue focussed on all aspects of DNS and LES, but also on hybrid methods like RANSILES coupling and detached-eddy simulation designed to provide reliable answers to technical flow problems at reasonable computational cost. DLES-5 was attended by 111 delegates from 15 countries. Its three-day pro gramme covered ten invited lectures and 63 original contributions partially pre sented in parallel sessions. The workshop was financially supported by the fol lowing companies, institutions and organizations: ANSYS Germany GmbH, AUDI AG, BMW Group, ERCOFfAC, FORTVER (Bavarian Research Asso ciation on Combustion), JM BURGERS CENTRE for Fluid Dynamics. Their help is gratefully acknowledged. The present Proceedings contain the written versions of nine invited lectures and fifty-nine selected and reviewed contributions which are organized in four parts: 1 Issues in LES modelling and numerics 2 Laminar-turbulent transition 3 Turbulent flows involving complex physical phenomena 4 Turbulent flows in complex geometries and in technical applications.
Author : Anthony James Keating
Publisher :
ISBN 13 :
Total Pages : 934 pages
Book Rating : 4.:/5 (224 download)
Download or read book Large-eddy Simulation of Heat Transfer in Turbulent Channel Flow and in the Turbulent Flow Downstream of a Backward-facing Step written by Anthony James Keating and published by . This book was released on 2004 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Lesieur
Publisher : Cambridge University Press
ISBN 13 : 9780521781244
Total Pages : 240 pages
Book Rating : 4.7/5 (812 download)
Download or read book Large-Eddy Simulations of Turbulence written by M. Lesieur and published by Cambridge University Press. This book was released on 2005-08-22 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large-Eddy Simulations of Turbulence is a reference for LES, direct numerical simulation and Reynolds-averaged Navier-Stokes simulation.
Author : P. Sagaut
Publisher : Springer Science & Business Media
ISBN 13 : 9783540263449
Total Pages : 600 pages
Book Rating : 4.2/5 (634 download)
Download or read book Large Eddy Simulation for Incompressible Flows written by P. Sagaut and published by Springer Science & Business Media. This book was released on 2006 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: First concise textbook on Large-Eddy Simulation, a very important method in scientific computing and engineering From the foreword to the third edition written by Charles Meneveau: "... this meticulously assembled and significantly enlarged description of the many aspects of LES will be a most welcome addition to the bookshelves of scientists and engineers in fluid mechanics, LES practitioners, and students of turbulence in general."
Author : C. Fureby
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Large Eddy Simulation of Premixed Turbulent Flow in a Rearward-facing Step Combustor written by C. Fureby and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernard J. Geurts
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110531828
Total Pages : 343 pages
Book Rating : 4.1/5 (15 download)
Download or read book Direct and Large-Eddy Simulation written by Bernard J. Geurts and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-12-05 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of the mathematics and physics behind the simulation of turbulent flows and discusses in detail (i) the phenomenology of turbulence in fluid dynamics, (ii) the role of direct and large-eddy simulation in predicting these dynamics, (iii) the multiple considerations underpinning subgrid modelling, and, (iv) the issue of validation and reliability resulting from interacting modelling and numerical errors.
Author : Rose Clara McCallen
Publisher :
ISBN 13 :
Total Pages : 714 pages
Book Rating : 4.:/5 (53 download)
Download or read book Large-eddy Simulation of Turbulent Flow Using the Finite Element Method written by Rose Clara McCallen and published by . This book was released on 1993 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter R. Voke
Publisher : Springer Science & Business Media
ISBN 13 : 940111000X
Total Pages : 438 pages
Book Rating : 4.4/5 (11 download)
Download or read book Direct and Large-Eddy Simulation I written by Peter R. Voke and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a truism that turbulence is an unsolved problem, whether in scientific, engin eering or geophysical terms. It is strange that this remains largely the case even though we now know how to solve directly, with the help of sufficiently large and powerful computers, accurate approximations to the equations that govern tur bulent flows. The problem lies not with our numerical approximations but with the size of the computational task and the complexity of the solutions we gen erate, which match the complexity of real turbulence precisely in so far as the computations mimic the real flows. The fact that we can now solve some turbu lence in this limited sense is nevertheless an enormous step towards the goal of full understanding. Direct and large-eddy simulations are these numerical solutions of turbulence. They reproduce with remarkable fidelity the statistical, structural and dynamical properties of physical turbulent and transitional flows, though since the simula tions are necessarily time-dependent and three-dimensional they demand the most advanced computer resources at our disposal. The numerical techniques vary from accurate spectral methods and high-order finite differences to simple finite-volume algorithms derived on the principle of embedding fundamental conservation prop erties in the numerical operations. Genuine direct simulations resolve all the fluid motions fully, and require the highest practical accuracy in their numerical and temporal discretisation. Such simulations have the virtue of great fidelity when carried out carefully, and repre sent a most powerful tool for investigating the processes of transition to turbulence.
Author : Eric Garnier
Publisher : Springer Science & Business Media
ISBN 13 : 9048128196
Total Pages : 280 pages
Book Rating : 4.0/5 (481 download)
Download or read book Large Eddy Simulation for Compressible Flows written by Eric Garnier and published by Springer Science & Business Media. This book was released on 2009-08-11 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses both the fundamentals and the practical industrial applications of Large Eddy Simulation (LES) in order to bridge the gap between LES research and the growing need to use it in engineering modeling.
Author :
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (451 download)
Download or read book Detached-eddy Simulation of Turbulent Flow Over a Wiper Blade written by and published by . This book was released on 2008 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decreasing noise and improving efficiency is an important trend for the future jetliner industry. The predominant sources of aerodynamic noise are created from attached turbulent boundary layers (TBL) as well as separated flows. The current numerical effort will focus on geometry of a fence to crudely model a windshield wiper blade for a large jetliner. This will produce an unsteady separated flow field. The recent literature lacks some of the characteristics that would make it most useful to aircraft applications. The numerical simulations performed were validated with a backward facing step experiment at M = 0.15. The backstep geometry was then altered one feature at a time until an angled fence system was produced. All simulations except the final were performed with conditions that matched the wind tunnel experiment. The final simulation was performed at cruise conditions at 35,000 feet, with rough flight deck conditions provided by the Boeing Company. The Mach number of the incoming boundary layer flow is 0.5. Results of mean velocity fields were in excellent agreement with experiments. Turbulence intensity as well as pressure quantities agreed. Spectra of pressure fluctuations followed trends of past experiments. Pressure fluctuation magnitudes were over predicted just as many other numerical investigations in literature concluded.
Author : NA Schumann
Publisher : Springer Science & Business Media
ISBN 13 : 3663001970
Total Pages : 350 pages
Book Rating : 4.6/5 (63 download)
Download or read book Direct and Large Eddy Simulation of Turbulence written by NA Schumann and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented to a EUROMECH-Colloquium held in Munich, September 30 to October 2, 1985. The Colloquium is number 199 in a series of colloquia inaugurated by the European Mechanics Committee. The meeting was jointly organized by the 'Lehrstuhl fur Stromungsmechanik' at the 'Technische Universitat Munchen' and the 'Institut fur Physik der Atmosphare' of the 'Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt' (DFVLR) in Oberpfaffenhofen. 'Direct' and 'large eddy simulation' are terms which denote two closely con nected methods of turbulence research. In a 'direct simulation' (DS), turbu lent motion is simulated by numerically integrating the Navier-Stokes equations in three-dimensional space and as a function of time. Besides ini tial and boundary conditions no physical simplifications are involved. Com puter resources limit the resolution in time and space, though simulations with an order of one million discrete points in space are feasible. The simu lated flow fields can be considered as true realizations of turbulent flow fields and analysed to answer questions on the basic behaviour of turbulence. Direct simulations are valid as long as all the excited scales remain within the band of resolved scales. This means that viscosity must be strong enough to damp out the not resolved scales or the simulation is restricted to a lim ited integration-time interval only. In summary, DS provides a tool to investigate turbulent motions from first principles at least for a finite band of scales.
Author : Charles Mockett
Publisher : Univerlagtuberlin
ISBN 13 : 3798321604
Total Pages : 256 pages
Book Rating : 4.7/5 (983 download)
Download or read book A Comprehensive Study of Detached Eddy Simulation written by Charles Mockett and published by Univerlagtuberlin. This book was released on 2009 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Luigi Carlo Berselli
Publisher : Springer Science & Business Media
ISBN 13 : 9783540263166
Total Pages : 378 pages
Book Rating : 4.2/5 (631 download)
Download or read book Mathematics of Large Eddy Simulation of Turbulent Flows written by Luigi Carlo Berselli and published by Springer Science & Business Media. This book was released on 2006 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The LES-method is rapidly developing in many practical applications in engineering The mathematical background is presented here for the first time in book form by one of the leaders in the field
Author : Pierre Sagaut
Publisher : Springer Science & Business Media
ISBN 13 : 3662044161
Total Pages : 326 pages
Book Rating : 4.6/5 (62 download)
Download or read book Large Eddy Simulation for Incompressible Flows written by Pierre Sagaut and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: First concise textbook on Large-Eddy Simulation, a very important method in scientific computing and engineering From the foreword to the third edition written by Charles Meneveau: "... this meticulously assembled and significantly enlarged description of the many aspects of LES will be a most welcome addition to the bookshelves of scientists and engineers in fluid mechanics, LES practitioners, and students of turbulence in general."
