Direct And Large Eddy Simulation Xi
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Direct And Large Eddy Simulation Xi
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Author : Maria Vittoria Salvetti
language : en
Publisher: Springer
Release Date : 2019-02-02
Direct And Large Eddy Simulation Xi written by Maria Vittoria Salvetti and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-02 with Technology & Engineering categories.
This book gathers the proceedings of the 11th workshop on Direct and Large Eddy Simulation (DLES), which was held in Pisa, Italy in May 2017. The event focused on modern techniques for simulating turbulent flows based on the partial or full resolution of the instantaneous turbulent flow structures, as Direct Numerical Simulation (DNS), Large-Eddy Simulation (LES) or hybrid models based on a combination of LES and RANS approaches. In light of the growing capacities of modern computers, these approaches have been gaining more and more interest over the years and will undoubtedly be developed and applied further. The workshop offered a unique opportunity to establish a state-of-the-art of DNS, LES and related techniques for the computation and modeling of turbulent and transitional flows and to discuss about recent advances and applications. This volume contains most of the contributed papers, which were submitted and further reviewed for publication. They cover advances in computational techniques, SGS modeling, boundary conditions, post-processing and data analysis, and applications in several fields, namely multiphase and reactive flows, convection and heat transfer, compressible flows, aerodynamics of airfoils and wings, bluff-body and separated flows, internal flows and wall turbulence and other complex flows.
Numerical Techniques For Direct And Large Eddy Simulations
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Author : Xi Jiang
language : en
Publisher: CRC Press
Release Date : 2016-04-19
Numerical Techniques For Direct And Large Eddy Simulations written by Xi Jiang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-19 with Mathematics categories.
Compared to the traditional modeling of computational fluid dynamics, direct numerical simulation (DNS) and large-eddy simulation (LES) provide a very detailed solution of the flow field by offering enhanced capability in predicting the unsteady features of the flow field. In many cases, DNS can obtain results that are impossible using any other means while LES can be employed as an advanced tool for practical applications. Focusing on the numerical needs arising from the applications of DNS and LES, Numerical Techniques for Direct and Large-Eddy Simulations covers basic techniques for DNS and LES that can be applied to practical problems of flow, turbulence, and combustion. After introducing Navier–Stokes equations and the methodologies of DNS and LES, the book discusses boundary conditions for DNS and LES, along with time integration methods. It then describes the numerical techniques used in the DNS of incompressible and compressible flows. The book also presents LES techniques for simulating incompressible and compressible flows. The final chapter explores current challenges in DNS and LES. Helping readers understand the vast amount of literature in the field, this book explains how to apply relevant numerical techniques for practical computational fluid dynamics simulations and implement these methods in fluid dynamics computer programs.
Direct And Large Eddy Simulation I
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Author : Peter R. Voke
language : en
Publisher: Springer Science & Business Media
Release Date : 1994-10-31
Direct And Large Eddy Simulation I written by Peter R. Voke and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-10-31 with Technology & Engineering categories.
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.
Direct And Large Eddy Simulation Ii
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Author : Jean-Pierre Chollet
language : en
Publisher: Springer
Release Date : 2012-10-15
Direct And Large Eddy Simulation Ii written by Jean-Pierre Chollet and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-15 with Science categories.
Progress in the numerical simulation of turbulence has been rapid in the 1990s. New techniques both for the numerical approximation of the Navier-Stokes equations and for the subgrid-scale models used in large-eddy simulation have emerged and are being widely applied for both fundamental and applied engineering studies, along with novel ideas for the performance and use of simulation for compressible, chemically reacting and transitional flows. This collection of papers from the second ERCOFTAC Workshop on Direct and Large-Eddy Simulation, held in Grenoble in September 1996, presents the key research being undertaken in Europe and Japan on these topics. Describing in detail the ambitious use of DNS for fundamental studies and of LES for complex flows of potential and actual engineering importance, this volume will be of interest to all researchers active in the area.
Direct And Large Eddy Simulation
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Author : Bernard J. Geurts
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2022-12-05
Direct And Large Eddy Simulation written by Bernard J. Geurts and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-05 with Mathematics categories.
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.
Direct And Large Eddy Simulation Iv
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Author : Bernard Geurts
language : en
Publisher: Springer
Release Date : 2014-03-14
Direct And Large Eddy Simulation Iv written by Bernard Geurts and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03-14 with Technology & Engineering categories.
This volume contains the proceedings of the 2001 DLES4 workshop. It describes and discusses state-of-the-art modeling and simulation approaches for complex flows. Fundamental turbulence and modeling issues but also elements from modern numerical analysis are at the heart of this field of interest.
Direct And Large Eddy Simulation Xii
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Author : Manuel García-Villalba
language : en
Publisher: Springer Nature
Release Date : 2020-05-09
Direct And Large Eddy Simulation Xii written by Manuel García-Villalba and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-09 with Technology & Engineering categories.
This book gathers the proceedings of the 12th instalment in the bi-annual Workshop series on Direct and Large Eddy Simulation (DLES), which began in 1994 and focuses on modern techniques used to simulate turbulent flows based on the partial or full resolution of the instantaneous turbulent flow structure. With the rapidly expanding capacities of modern computers, this approach has attracted more and more interest over the years and will undoubtedly be further enhanced and applied in the future. Hybrid modelling techniques based on a combination of LES and RANS approaches also fall into this category and are covered as well. The goal of the Workshop was to share the state of the art in DNS, LES and related techniques for the computation and modelling of turbulent and transitional flows. The respective papers highlight the latest advances in the prediction, understanding and control of turbulent flows in academic and industrial applications.
Large Eddy Simulation Of Complex Engineering And Geophysical Flows
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Author : Boris Galperin
language : en
Publisher: Cambridge University Press
Release Date : 1993-11-26
Large Eddy Simulation Of Complex Engineering And Geophysical Flows written by Boris Galperin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-11-26 with Technology & Engineering categories.
Originally published in 1993, this book was the first to offer a comprehensive review of large eddy simulations (LES) - the history, state of the art, and promising directions for research. Among topics covered are fundamentals of LES; LES of incompressible, compressible, and reacting flows; LES of atmospheric, oceanic, and environmental flows; and LES and massivelt parallel computing. The book grew out of an international workshop that, for the first time, brought together leading researchers in engineering and geophysics to discuss developments and applications of LES models in their respective fields. It will be of value to anyone with an interest in turbulence modelling.
Large Eddy Simulation In Hydraulics
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Author : Wolfgang Rodi
language : en
Publisher: CRC Press
Release Date : 2013-06-27
Large Eddy Simulation In Hydraulics written by Wolfgang Rodi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-27 with Technology & Engineering categories.
An introduction to the Large-Eddy-Simulation (LES) method, geared primarily toward hydraulic and environmental engineers, the book covers special features of flows in water bodies and summarizes the experience gained with LES for calculating such flows. It can also be a valuable entry to the subject of LES for researchers and students in all fields of fluids engineering, and the applications part will be useful to researchers interested in the physics of flows governed by the dynamics of coherent structures.
Industrial And Environmental Applications Of Direct And Large Eddy Simulation
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Author : Sedat Biringen
language : en
Publisher: Springer
Release Date : 1999-08-19
Industrial And Environmental Applications Of Direct And Large Eddy Simulation written by Sedat Biringen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-08-19 with Mathematics categories.
This book provides a unique assembly of state-of-the-art articles concerned with a wide range of fundamental and applied issues, including turbulence parameterization, numerical uncertainty, complex turbulence, flow-structure interactions, atmosphere-ocean turbulence and turmachinery flows. The articles provide specific examples of the most recent applications of direct and large eddies methods. These methods have been very successful in providing new insight into the structure of turbulent flows and are becoming feasable in real engineering and environmental problems with complex geometries. This volume will be a very valuable source book for researchers and graduate students embarking on studies in turbulent flow simulation.