A High Resolution Capability For Large Eddy Simulation Of Jet Flows

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A High-Resolution Capability for Large-Eddy Simulation of Jet Flows

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781793946041
Total Pages : 30 pages
Book Rating : 4.9/5 (46 download)

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Book Synopsis A High-Resolution Capability for Large-Eddy Simulation of Jet Flows by : National Aeronautics and Space Adm Nasa

Download or read book A High-Resolution Capability for Large-Eddy Simulation of Jet Flows written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-13 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large-eddy simulation (LES) code that utilizes high-resolution numerical schemes is described and applied to a compressible jet flow. The code is written in a general manner such that the accuracy/resolution of the simulation can be selected by the user. Time discretization is performed using a family of low-dispersion Runge-Kutta schemes, selectable from first- to fourth-order. Spatial discretization is performed using central differencing schemes. Both standard schemes, second- to twelfth-order (3 to 13 point stencils) and Dispersion Relation Preserving schemes from 7 to 13 point stencils are available. The code is written in Fortran 90 and uses hybrid MPI/OpenMP parallelization. The code is applied to the simulation of a Mach 0.9 jet flow. Four-stage third-order Runge-Kutta time stepping and the 13 point DRP spatial discretization scheme of Bogey and Bailly are used. The high resolution numerics used allows for the use of relatively sparse grids. Three levels of grid resolution are examined, 3.5, 6.5, and 9.2 million points. Mean flow, first-order turbulent statistics and turbulent spectra are reported. Good agreement with experimental data for mean flow and first-order turbulent statistics is shown. DeBonis, James R. Glenn Research Center WBS 984754.02.07.03.17.04

Large-Eddy Simulations of Turbulence

Author : M. Lesieur
Publisher : Cambridge University Press
ISBN 13 : 9780521781244
Total Pages : 240 pages
Book Rating : 4.7/5 (812 download)

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Book Synopsis Large-Eddy Simulations of Turbulence by : M. Lesieur

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.

Jet Aeroacoustics

Author : Ganesh Raman
Publisher : Multi-Science Publishing Company
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Jet Aeroacoustics by : Ganesh Raman

Download or read book Jet Aeroacoustics written by Ganesh Raman and published by Multi-Science Publishing Company. This book was released on 2008 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date survey of airplane noise, this single-volume reference thoroughly addresses the key problems facing aeronautical engineers. By tackling the most important aspects of jet aeroacoustics, including theories of jet noise, the design of jet noise facilities, and how jet noise is measured, this thoroughly researched analysis outlines a plan for first limiting the current distress being vocalized in issues of passenger cabin comfort and protests by those living near airports and later for finding an overall solution to jet noise.

Implicit Large Eddy Simulation

Author : Fernando F. Grinstein
Publisher : Cambridge University Press
ISBN 13 : 9780521172721
Total Pages : 0 pages
Book Rating : 4.1/5 (727 download)

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Book Synopsis Implicit Large Eddy Simulation by : Fernando F. Grinstein

Download or read book Implicit Large Eddy Simulation written by Fernando F. Grinstein and published by Cambridge University Press. This book was released on 2011-02-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The numerical simulation of turbulent flows is a subject of great practical importance to scientists and engineers. The difficulty in achieving predictive simulations is perhaps best illustrated by the wide range of approaches that have been developed and are still being used by the turbulence modeling community. In this book the authors describe one of these approaches, Implicit Large Eddy Simulation (ILES). ILES is a relatively new approach that combines generality and computational efficiency with documented success in many areas of complex fluid flow. This book synthesizes the theoretical basis of the ILES methodology and reviews its accomplishments. ILES pioneers and lead researchers combine here their experience to present a comprehensive description of the methodology. This book should be of fundamental interest to graduate students, basic research scientists, as well as professionals involved in the design and analysis of complex turbulent flows.

Mathematics of Large Eddy Simulation of Turbulent Flows

Author : Luigi Carlo Berselli
Publisher : Springer Science & Business Media
ISBN 13 : 9783540263166
Total Pages : 378 pages
Book Rating : 4.2/5 (631 download)

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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

Large Eddy Simulation for Incompressible Flows

Author : P. Sagaut
Publisher : Springer Science & Business Media
ISBN 13 : 3540264035
Total Pages : 575 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis Large Eddy Simulation for Incompressible Flows by : P. Sagaut

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 2005-12-11 with total page 575 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."

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quality and Reliability of Large-Eddy Simulations II

Author : Maria Vittoria Salvetti
Publisher : Springer Science & Business Media
ISBN 13 : 9400702310
Total Pages : 442 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Quality and Reliability of Large-Eddy Simulations II by : Maria Vittoria Salvetti

Download or read book Quality and Reliability of Large-Eddy Simulations II written by Maria Vittoria Salvetti and published by Springer Science & Business Media. This book was released on 2010-11-03 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second Workshop on "Quality and Reliability of Large-Eddy Simulations", QLES2009, was held at the University of Pisa from September 9 to September 11, 2009. Its predecessor, QLES2007, was organized in 2007 in Leuven (Belgium). The focus of QLES2009 was on issues related to predicting, assessing and assuring the quality of LES. The main goal of QLES2009 was to enhance the knowledge on error sources and on their interaction in LES and to devise criteria for the prediction and optimization of simulation quality, by bringing together mathematicians, physicists and engineers and providing a platform specifically addressing these aspects for LES. Contributions were made by leading experts in the field. The present book contains the written contributions to QLES2009 and is divided into three parts, which reflect the main topics addressed at the workshop: (i) SGS modeling and discretization errors; (ii) Assessment and reduction of computational errors; (iii) Mathematical analysis and foundation for SGS modeling.

Jet noise physics and modeling using firstprinciples simulations

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428995218
Total Pages : 47 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Jet noise physics and modeling using firstprinciples simulations by :

Download or read book Jet noise physics and modeling using firstprinciples simulations written by and published by DIANE Publishing. This book was released on with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Selection of Test Cases for the Validation of Large-eddy Simulations of Turbulent Flows

Author :
Publisher :
ISBN 13 : 9789283610724
Total Pages : 198 pages
Book Rating : 4.6/5 (17 download)

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Book Synopsis A Selection of Test Cases for the Validation of Large-eddy Simulations of Turbulent Flows by :

Download or read book A Selection of Test Cases for the Validation of Large-eddy Simulations of Turbulent Flows written by and published by . This book was released on 1998 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Large-Eddy Simulation for Acoustics

Author : Claus Wagner
Publisher : Cambridge University Press
ISBN 13 : 1139463160
Total Pages : 389 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Large-Eddy Simulation for Acoustics by : Claus Wagner

Download or read book Large-Eddy Simulation for Acoustics written by Claus Wagner and published by Cambridge University Press. This book was released on 2007-01-15 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noise around airports, trains, and industries attracts environmental concern and regulation. Large-eddy simulation (LES) is used for noise-reduced design and acoustical research. This 2007 book, by 30 experts, presents the theoretical background of acoustics and LES, and details about numerical methods, e.g. discretization schemes, boundary conditions, and coupling aspects.

Parallel Scientific Computing and Optimization

Author : Raimondas Ciegis
Publisher : Springer Science & Business Media
ISBN 13 : 0387097074
Total Pages : 287 pages
Book Rating : 4.3/5 (87 download)

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Book Synopsis Parallel Scientific Computing and Optimization by : Raimondas Ciegis

Download or read book Parallel Scientific Computing and Optimization written by Raimondas Ciegis and published by Springer Science & Business Media. This book was released on 2008-10-08 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parallel Scientific Computing and Optimization introduces new developments in the construction, analysis, and implementation of parallel computing algorithms. This book presents 23 self-contained chapters, including survey chapters and surveys, written by distinguished researchers in the field of parallel computing. Each chapter is devoted to some aspects of the subject: parallel algorithms for matrix computations, parallel optimization, management of parallel programming models and data, with the largest focus on parallel scientific computing in industrial applications. This volume is intended for scientists and graduate students specializing in computer science and applied mathematics who are engaged in parallel scientific computing.

Computational heat and mass transfer – CHMT 2001- Vol.II

Author :
Publisher : Editora E-papers
ISBN 13 : 8587922459
Total Pages : 369 pages
Book Rating : 4.5/5 (879 download)

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Book Synopsis Computational heat and mass transfer – CHMT 2001- Vol.II by :

Download or read book Computational heat and mass transfer – CHMT 2001- Vol.II written by and published by Editora E-papers. This book was released on with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied Mechanics Reviews

Author :
Publisher :
ISBN 13 :
Total Pages : 1380 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1991 with total page 1380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of the Discontinuous Galerkin Method for High-resolution, Large Scale CFD and Acoustics in Industrial Geometries

Author : Koen Hillewaert
Publisher : Presses univ. de Louvain
ISBN 13 : 2875581198
Total Pages : 173 pages
Book Rating : 4.8/5 (755 download)

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Book Synopsis Development of the Discontinuous Galerkin Method for High-resolution, Large Scale CFD and Acoustics in Industrial Geometries by : Koen Hillewaert

Download or read book Development of the Discontinuous Galerkin Method for High-resolution, Large Scale CFD and Acoustics in Industrial Geometries written by Koen Hillewaert and published by Presses univ. de Louvain. This book was released on 2013-02-10 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this work is the practical development of the discontinuous Galerkin method, arguably the most mature high-order discretisation, for the scale resolving simulations of turbomachinery flows.

Numerical Simulation of Turbulent Flows and Noise Generation

Author : Christophe Brun
Publisher : Springer Science & Business Media
ISBN 13 : 3540899561
Total Pages : 344 pages
Book Rating : 4.5/5 (48 download)

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Book Synopsis Numerical Simulation of Turbulent Flows and Noise Generation by : Christophe Brun

Download or read book Numerical Simulation of Turbulent Flows and Noise Generation written by Christophe Brun and published by Springer Science & Business Media. This book was released on 2009-03-07 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large Eddy Simulation (LES) is a high-fidelity approach to the numerical simulation of turbulent flows. Recent developments have shown LES to be able to predict aerodynamic noise generation and propagation as well as the turbulent flow, by means of either a hybrid or a direct approach. This book is based on the results of two French/German research groups working on LES simulations in complex geometries and noise generation in turbulent flows. The results provide insights into modern prediction approaches for turbulent flows and noise generation mechanisms as well as their use for novel noise reduction concepts.

The Atmosphere over Mountainous Regions

Author : Miguel A. C. Teixeira
Publisher : Frontiers Media SA
ISBN 13 : 2889450163
Total Pages : 162 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis The Atmosphere over Mountainous Regions by : Miguel A. C. Teixeira

Download or read book The Atmosphere over Mountainous Regions written by Miguel A. C. Teixeira and published by Frontiers Media SA. This book was released on 2016-11-09 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountainous regions occupy a significant fraction of the Earth's continents and are characterized by specific meteorological phenomena operating on a wide range of scales. Being a home to large human populations, the impact of mountains on weather and hydrology has significant practical consequences. Mountains modulate the climate and create micro-climates, induce different types of thermally and dynamically driven circulations, generate atmospheric waves of various scales (known as mountain waves), and affect the boundary layer characteristics and the dispersion of pollutants. At the local scale, strong downslope winds linked with mountain waves (such as the Foehn and Bora) can cause severe damage. Mountain wave breaking in the high atmosphere is a source of Clear Air Turbulence, and lee wave rotors are a major near-surface aviation hazard. Mountains also act to block strongly stratified air layers, leading to the formation of valley cold air-pools (with implications for road safety, pollution, crop damage, etc.) and gap flows. Presently, neither the fine-scale structure of orographic precipitation nor the initiation of deep convection by mountainous terrain can be resolved adequately by regional-to global-scale models, requiring appropriate downscaling or parameterization. Additionally, the shortest mountain waves need to be parameterized in global weather and climate prediction models, because they exert a drag on the atmosphere. This drag not only decelerates the global atmospheric circulation, but also affects temperatures in the polar stratosphere, which control ozone depletion. It is likely that both mountain wave drag and orographic precipitation lead to non-trivial feedbacks in climate change scenarios. Measurement campaigns such as MAP, T-REX, Materhorn, COLPEX and i-Box provided a wealth of mountain meteorology field data, which is only starting to be explored. Recent advances in computing power allow numerical simulations of unprecedented resolution, e.g. LES modelling of rotors, mountain wave turbulence, and boundary layers in mountainous regions. This will lead to important advances in understanding these phenomena, as well as mixing and pollutant dispersion over complex terrain, or the onset and breakdown of cold air pools. On the other hand, recent analyses of global circulation biases point towards missing drag, especially in the southern hemisphere, which may be due to processes currently neglected in parameterizations. A better understanding of flow over orography is also crucial for a better management of wind power and a more effective use of data assimilation over complex terrain. This Research Topic includes contributions that aim to shed light on a number of these issues, using theory, numerical modelling, field measurements, and laboratory experiments.