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Approximate Deconvolution Models of Turbulence

Author: William J. Layton

Publisher: Springer Science & Business Media

Published: 2012-01-07

Total Pages: 190

ISBN-13: 3642244084

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This volume presents a mathematical development of a recent approach to the modeling and simulation of turbulent flows based on methods for the approximate solution of inverse problems. The resulting Approximate Deconvolution Models or ADMs have some advantages over more commonly used turbulence models – as well as some disadvantages. Our goal in this book is to provide a clear and complete mathematical development of ADMs, while pointing out the difficulties that remain. In order to do so, we present the analytical theory of ADMs, along with its connections, motivations and complements in the phenomenology of and algorithms for ADMs.

Book Synopsis Approximate Deconvolution Models of Turbulence by : William J. Layton

Download or read book Approximate Deconvolution Models of Turbulence written by William J. Layton and published by Springer Science & Business Media. This book was released on 2012-01-07 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a mathematical development of a recent approach to the modeling and simulation of turbulent flows based on methods for the approximate solution of inverse problems. The resulting Approximate Deconvolution Models or ADMs have some advantages over more commonly used turbulence models – as well as some disadvantages. Our goal in this book is to provide a clear and complete mathematical development of ADMs, while pointing out the difficulties that remain. In order to do so, we present the analytical theory of ADMs, along with its connections, motivations and complements in the phenomenology of and algorithms for ADMs.

Approximate Deconvolution Models of Turbulence

Author: William J. Layton

Publisher: Springer

Published: 2012-01-06

Total Pages: 190

ISBN-13: 3642244092

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Book Synopsis Approximate Deconvolution Models of Turbulence by : William J. Layton

Download or read book Approximate Deconvolution Models of Turbulence written by William J. Layton and published by Springer. This book was released on 2012-01-06 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a mathematical development of a recent approach to the modeling and simulation of turbulent flows based on methods for the approximate solution of inverse problems. The resulting Approximate Deconvolution Models or ADMs have some advantages over more commonly used turbulence models – as well as some disadvantages. Our goal in this book is to provide a clear and complete mathematical development of ADMs, while pointing out the difficulties that remain. In order to do so, we present the analytical theory of ADMs, along with its connections, motivations and complements in the phenomenology of and algorithms for ADMs.

Turbulence: Numerical Analysis, Modelling and Simulation

Author: William Layton

Publisher: MDPI

Published: 2018-05-04

Total Pages: 229

ISBN-13: 3038428094

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This book is a printed edition of the Special Issue "Turbulence: Numerical Analysis, Modelling and Simulation" that was published in Fluids

Book Synopsis Turbulence: Numerical Analysis, Modelling and Simulation by : William Layton

Download or read book Turbulence: Numerical Analysis, Modelling and Simulation written by William Layton and published by MDPI. This book was released on 2018-05-04 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Turbulence: Numerical Analysis, Modelling and Simulation" that was published in Fluids

Large Eddy Simulation for Compressible Flows

Author: Eric Garnier

Publisher: Springer Science & Business Media

Published: 2009-08-11

Total Pages: 280

ISBN-13: 9048128196

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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.

Book Synopsis Large Eddy Simulation for Compressible Flows by : Eric Garnier

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.

Mathematics of Large Eddy Simulation of Turbulent Flows

Author: Luigi Carlo Berselli

Publisher: Springer Science & Business Media

Published: 2006

Total Pages: 378

ISBN-13: 9783540263166

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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

Book Synopsis Mathematics of Large Eddy Simulation of Turbulent Flows by : Luigi Carlo Berselli

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

IMPROVING THE TEMPORAL ACCURACY OF TURBULENCE MODELS AND RESOLVING THE IMPLEMENTATION ISSUES OF FLUID FLOW MODELING

Author:

Publisher:

Published: 2021

Total Pages:

ISBN-13:

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Abstract : A sizeable proportion of the work in this thesis focuses on a new turbulence model, dubbed ADC (the approximate deconvolution model with defect correction). The ADC is improved upon using spectral deferred correction, a means of constructing a higher order ODE solver. Since both the ADC and SDC are based on a predictor-corrector approach, SDC is incorporated with essentially no additional computational cost. We will show theoretically and using numerical tests that the new scheme is indeed higher order in time than the original, and that the benefits of defect correction, on which the ADC is based, are preserved. The final two chapters in this thesis focus on a two important numerical difficulties arising in fluid flow modeling: poor mass-conservation and possible non-physical oscillations. We show that grad-div stabilization, previously assumed to have no effect on the target quantities of the test problem used, can significantly alter the results even on standard benchmark problems. We also propose a work-around and verify numerically that it has promise. Then we investigate two different formulations of Crank-Nicolson for the Navier-Stokes equations. The most attractive implementation, second order accurate for both velocity and pressure, is shown to introduce non-physical oscillations. We then propose two options which are shown to avoid the poor behavior

Book Synopsis IMPROVING THE TEMPORAL ACCURACY OF TURBULENCE MODELS AND RESOLVING THE IMPLEMENTATION ISSUES OF FLUID FLOW MODELING by :

Download or read book IMPROVING THE TEMPORAL ACCURACY OF TURBULENCE MODELS AND RESOLVING THE IMPLEMENTATION ISSUES OF FLUID FLOW MODELING written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : A sizeable proportion of the work in this thesis focuses on a new turbulence model, dubbed ADC (the approximate deconvolution model with defect correction). The ADC is improved upon using spectral deferred correction, a means of constructing a higher order ODE solver. Since both the ADC and SDC are based on a predictor-corrector approach, SDC is incorporated with essentially no additional computational cost. We will show theoretically and using numerical tests that the new scheme is indeed higher order in time than the original, and that the benefits of defect correction, on which the ADC is based, are preserved. The final two chapters in this thesis focus on a two important numerical difficulties arising in fluid flow modeling: poor mass-conservation and possible non-physical oscillations. We show that grad-div stabilization, previously assumed to have no effect on the target quantities of the test problem used, can significantly alter the results even on standard benchmark problems. We also propose a work-around and verify numerically that it has promise. Then we investigate two different formulations of Crank-Nicolson for the Navier-Stokes equations. The most attractive implementation, second order accurate for both velocity and pressure, is shown to introduce non-physical oscillations. We then propose two options which are shown to avoid the poor behavior

Multiscale And Multiresolution Approaches In Turbulence

Author: Pierre Sagaut

Publisher: World Scientific

Published: 2006-06-19

Total Pages: 356

ISBN-13: 1908979879

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This unique book gives a general unified presentation of the use of the multiscale/multiresolution approaches in the field of turbulence. The coverage ranges from statistical models developed for engineering purposes to multiresolution algorithms for the direct computation of turbulence. It provides the only available up-to-date reviews dealing with the latest and most advanced turbulence models (including LES, VLES, hybrid RANS/LES, DES) and numerical strategies.The book aims at providing the reader with a comprehensive description of modern strategies for turbulent flow simulation, ranging from turbulence modeling to the most advanced multilevel numerical methods./a

Book Synopsis Multiscale And Multiresolution Approaches In Turbulence by : Pierre Sagaut

Download or read book Multiscale And Multiresolution Approaches In Turbulence written by Pierre Sagaut and published by World Scientific. This book was released on 2006-06-19 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book gives a general unified presentation of the use of the multiscale/multiresolution approaches in the field of turbulence. The coverage ranges from statistical models developed for engineering purposes to multiresolution algorithms for the direct computation of turbulence. It provides the only available up-to-date reviews dealing with the latest and most advanced turbulence models (including LES, VLES, hybrid RANS/LES, DES) and numerical strategies.The book aims at providing the reader with a comprehensive description of modern strategies for turbulent flow simulation, ranging from turbulence modeling to the most advanced multilevel numerical methods./a

HIGHER ACCURACY MODELS AND VALIDATION OF LES-C TURBULENCE MODELS

Author:

Publisher:

Published: 2023

Total Pages: 0

ISBN-13:

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Abstract : In Labovsky (2020), a new family of turbulence models named Large Eddy Simulation with Correction (LES-C) has been proposed to reduce the modeling error of Large Eddy Simulation (LES) models. There a predictor-corrector technique called defect correction was used, treating a Large Eddy Simulation(LES) model as the defect solution and then correcting it on the same spatial mesh in the correction step. Chapter 2, Chapter 4, and Chapter 5 of this dissertation are based on the studies on LES-C models. Chapter 2 presents a model to reduce the time discretization error of the LES-C models using the deferred correction technique. Since the temporal accuracy was gained by adding several terms to the right-hand side of the correction step of the existing LES-C structure, the accuracy was gained at no additional computational cost. It was demonstrated using the Approximate Deconvolution Model (ADM) in the LES family and the new model was named ADC with deferred correction. Chapter 3 describes the effect of the standard and modular grad-div stabilization with Taylor-Hood finite elements on drag/lift coefficient comparing it with the calculations of Scott-Vogelius finite elements. The Chapter 4 proposes a model to improve the accuracy of the MagnetoHydroDynamic(MHD) system that is written in Elsˊþasser variables. It was developed in the LES-C framework aiming to reduce both temporal and modeling errors of the existing turbulent model. It was demonstrated using ADM(MHD-ADM) in the LES family and through the numerical tests it was shown the superiority of the new model MHD- ADC over MHD-ADM. The Chapter 5 investigates four LES-C models namely ADC, Leray-Ɑ-C, NS-Ɑ-C, and NS-ꞷ-C which developed from the popular LES models ADM, Leray-Ɑ, NS-Ɑ, and NS-ꞷ by performing the analysis for three benchmark problems: flow past a circular object, flow past a step, and benchmark problem of turbulent 3D channel flow.

Book Synopsis HIGHER ACCURACY MODELS AND VALIDATION OF LES-C TURBULENCE MODELS by :

Download or read book HIGHER ACCURACY MODELS AND VALIDATION OF LES-C TURBULENCE MODELS written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : In Labovsky (2020), a new family of turbulence models named Large Eddy Simulation with Correction (LES-C) has been proposed to reduce the modeling error of Large Eddy Simulation (LES) models. There a predictor-corrector technique called defect correction was used, treating a Large Eddy Simulation(LES) model as the defect solution and then correcting it on the same spatial mesh in the correction step. Chapter 2, Chapter 4, and Chapter 5 of this dissertation are based on the studies on LES-C models. Chapter 2 presents a model to reduce the time discretization error of the LES-C models using the deferred correction technique. Since the temporal accuracy was gained by adding several terms to the right-hand side of the correction step of the existing LES-C structure, the accuracy was gained at no additional computational cost. It was demonstrated using the Approximate Deconvolution Model (ADM) in the LES family and the new model was named ADC with deferred correction. Chapter 3 describes the effect of the standard and modular grad-div stabilization with Taylor-Hood finite elements on drag/lift coefficient comparing it with the calculations of Scott-Vogelius finite elements. The Chapter 4 proposes a model to improve the accuracy of the MagnetoHydroDynamic(MHD) system that is written in Elsˊþasser variables. It was developed in the LES-C framework aiming to reduce both temporal and modeling errors of the existing turbulent model. It was demonstrated using ADM(MHD-ADM) in the LES family and through the numerical tests it was shown the superiority of the new model MHD- ADC over MHD-ADM. The Chapter 5 investigates four LES-C models namely ADC, Leray-Ɑ-C, NS-Ɑ-C, and NS-ꞷ-C which developed from the popular LES models ADM, Leray-Ɑ, NS-Ɑ, and NS-ꞷ by performing the analysis for three benchmark problems: flow past a circular object, flow past a step, and benchmark problem of turbulent 3D channel flow.

Turbulence and Interactions

Author: Michel Deville

Publisher: Springer Nature

Published: 2021-02-16

Total Pages: 218

ISBN-13: 3030658201

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This book presents a snapshot of the state-of-art in the field of turbulence modeling, with an emphasis on numerical methods. Topics include direct numerical simulations, large eddy simulations, compressible turbulence, coherent structures, two-phase flow simulation and many more. It includes both theoretical contributions and experimental works, as well as chapters derived from keynote lectures, presented at the fifth Turbulence and Interactions Conference (TI 2018), which was held on June 25-29 in Martinique, France. This multifaceted collection, which reflects the conference ́s emphasis on the interplay of theory, experiments and computing in the process of understanding and predicting the physics of complex flows and solving related engineering problems, offers a timely guide for students, researchers and professionals in the field of applied computational fluid dynamics, turbulence modeling and related areas.

Book Synopsis Turbulence and Interactions by : Michel Deville

Download or read book Turbulence and Interactions written by Michel Deville and published by Springer Nature. This book was released on 2021-02-16 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a snapshot of the state-of-art in the field of turbulence modeling, with an emphasis on numerical methods. Topics include direct numerical simulations, large eddy simulations, compressible turbulence, coherent structures, two-phase flow simulation and many more. It includes both theoretical contributions and experimental works, as well as chapters derived from keynote lectures, presented at the fifth Turbulence and Interactions Conference (TI 2018), which was held on June 25-29 in Martinique, France. This multifaceted collection, which reflects the conference ́s emphasis on the interplay of theory, experiments and computing in the process of understanding and predicting the physics of complex flows and solving related engineering problems, offers a timely guide for students, researchers and professionals in the field of applied computational fluid dynamics, turbulence modeling and related areas.

Progress in Turbulence

Author: Joachim Peinke

Publisher: Springer Science & Business Media

Published: 2006-05-06

Total Pages: 235

ISBN-13: 3540274014

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Besides turbulence, there is hardly any other scientific topic which has been considered a prominent scientific challenge for such a long time. The special interest in turbulence is not only based on it being a difficult scientific problem but also on its meaning in the technical world and our daily life. This carefully edited book comprises recent basic research as well as research related to the applications of turbulence. Therefore, both leading engineers and physicists working in the field of turbulence were invited to the iTi Conference on Turbulence held in Bad Zwischenahn, Gemany 21st - 24th of September 2003. Topics discussed include, for example, scaling laws and intermittency, thermal convection, boundary layers at large Reynolds numbers, isotropic turbulence, stochastic processes, passive and active scalars, coherent structures, numerical simulations, and related subjects.

Book Synopsis Progress in Turbulence by : Joachim Peinke

Download or read book Progress in Turbulence written by Joachim Peinke and published by Springer Science & Business Media. This book was released on 2006-05-06 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Besides turbulence, there is hardly any other scientific topic which has been considered a prominent scientific challenge for such a long time. The special interest in turbulence is not only based on it being a difficult scientific problem but also on its meaning in the technical world and our daily life. This carefully edited book comprises recent basic research as well as research related to the applications of turbulence. Therefore, both leading engineers and physicists working in the field of turbulence were invited to the iTi Conference on Turbulence held in Bad Zwischenahn, Gemany 21st - 24th of September 2003. Topics discussed include, for example, scaling laws and intermittency, thermal convection, boundary layers at large Reynolds numbers, isotropic turbulence, stochastic processes, passive and active scalars, coherent structures, numerical simulations, and related subjects.