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| Author | : Alvaro A. Aldama |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 410 |
| Release | : 2013-03-08 |
| Genre | : Science |
| ISBN | : 3642840914 |
Download Filtering Techniques for Turbulent Flow Simulation Book in PDF, ePub and Kindle
1. 1 Scope of the Study The detailed and reasonably accurate computation of large scale turbulent flows has become increasingly important in geophysical and engi neering applications in recent years. The definition of water quality management policies for reservoirs, lakes, estuaries, and coastal waters, as well as the design of cooling ponds and solar ponds, requires an ade quate quantitative description of turbulent flows. When the diffusion of some tracer (be it active, such as temperature or salinity, or passive, such as dissolved oxygen) is of relevance to a specific application, the proper determination of the effects of turbulent transport processes has paramount importance. Thus, for instance, the proper understanding of lake and reservoir dynamics requires, as a first step, the ability to simulate turbulent flows. Applications in other areas of geophysical research, such as meteorology and oceanography are easily identified and large in number. It should be stressed that, in this context, the analyst seeks predictive ability to a certain extent. Accordingly, the need for simulation models that closely resemble the natural processes to be repre sented has recently become more evident. Since the late 1960s considerable effort has been devoted to the development of models for the simulation of complex turbulent flows. This has resulted in the establishment of two approaches which have been, or 2 have the potential for being, applied to problems of engineering and geophysical interest.
| Author | : Thomas B. Gatski |
| Publisher | : Oxford University Press |
| Total Pages | : 329 |
| Release | : 1996-07-11 |
| Genre | : Science |
| ISBN | : 0195355563 |
Download Simulation and Modeling of Turbulent Flows Book in PDF, ePub and Kindle
This book provides students and researchers in fluid engineering with an up-to-date overview of turbulent flow research in the areas of simulation and modeling. A key element of the book is the systematic, rational development of turbulence closure models and related aspects of modern turbulent flow theory and prediction. Starting with a review of the spectral dynamics of homogenous and inhomogeneous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modeling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.
| Author | : Pierre Sagaut |
| Publisher | : World Scientific |
| Total Pages | : 446 |
| Release | : 2013 |
| Genre | : Science |
| ISBN | : 1848169876 |
Download Multiscale and Multiresolution Approaches in Turbulence Book in PDF, ePub and Kindle
The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.
| Author | : Peter S. Bernard |
| Publisher | : John Wiley & Sons |
| Total Pages | : 516 |
| Release | : 2002-08-19 |
| Genre | : Technology & Engineering |
| ISBN | : 9780471332190 |
Download Turbulent Flow Book in PDF, ePub and Kindle
Provides unique coverage of the prediction and experimentation necessary for making predictions. * Covers computational fluid dynamics and its relationship to direct numerical simulation used throughout the industry. * Covers vortex methods developed to calculate and evaluate turbulent flows. * Includes chapters on the state-of-the-art applications of research such as control of turbulence.
| Author | : Alvaro Alberto Aldama-Rodríguez |
| Publisher | : |
| Total Pages | : 794 |
| Release | : 1985 |
| Genre | : |
| ISBN | : |
Download Theory and Applications of Two- and Three-scale Filtering Approaches for Turbulent Flow Simulation Book in PDF, ePub and Kindle
| Author | : Takeo Kajishima |
| Publisher | : Springer |
| Total Pages | : 364 |
| Release | : 2016-10-01 |
| Genre | : Technology & Engineering |
| ISBN | : 3319453041 |
Download Computational Fluid Dynamics Book in PDF, ePub and Kindle
This textbook presents numerical solution techniques for incompressible turbulent flows that occur in a variety of scientific and engineering settings including aerodynamics of ground-based vehicles and low-speed aircraft, fluid flows in energy systems, atmospheric flows, and biological flows. This book encompasses fluid mechanics, partial differential equations, numerical methods, and turbulence models, and emphasizes the foundation on how the governing partial differential equations for incompressible fluid flow can be solved numerically in an accurate and efficient manner. Extensive discussions on incompressible flow solvers and turbulence modeling are also offered. This text is an ideal instructional resource and reference for students, research scientists, and professional engineers interested in analyzing fluid flows using numerical simulations for fundamental research and industrial applications.
| Author | : Sal Rodriguez |
| Publisher | : Springer Nature |
| Total Pages | : 316 |
| Release | : 2019-12-06 |
| Genre | : Computers |
| ISBN | : 3030286916 |
Download Applied Computational Fluid Dynamics and Turbulence Modeling Book in PDF, ePub and Kindle
This unique text provides engineering students and practicing professionals with a comprehensive set of practical, hands-on guidelines and dozens of step-by-step examples for performing state-of-the-art, reliable computational fluid dynamics (CFD) and turbulence modeling. Key CFD and turbulence programs are included as well. The text first reviews basic CFD theory, and then details advanced applied theories for estimating turbulence, including new algorithms created by the author. The book gives practical advice on selecting appropriate turbulence models and presents best CFD practices for modeling and generating reliable simulations. The author gathered and developed the book’s hundreds of tips, tricks, and examples over three decades of research and development at three national laboratories and at the University of New Mexico—many in print for the first time in this book. The book also places a strong emphasis on recent CFD and turbulence advancements found in the literature over the past five to 10 years. Readers can apply the author’s advice and insights whether using commercial or national laboratory software such as ANSYS Fluent, STAR-CCM, COMSOL, Flownex, SimScale, OpenFOAM, Fuego, KIVA, BIGHORN, or their own computational tools. Applied Computational Fluid Dynamics and Turbulence Modeling is a practical, complementary companion for academic CFD textbooks and senior project courses in mechanical, civil, chemical, and nuclear engineering; senior undergraduate and graduate CFD and turbulence modeling courses; and for professionals developing commercial and research applications.
| Author | : Roger Peyret |
| Publisher | : Springer |
| Total Pages | : 320 |
| Release | : 2014-05-04 |
| Genre | : Science |
| ISBN | : 3709125901 |
Download Advanced Turbulent Flow Computations Book in PDF, ePub and Kindle
This book collects the lecture notes concerning the IUTAM School on Advanced Turbulent Flow Computations held at CISM in Udine September 7–11, 1998. The course was intended for scientists, engineers and post-graduate students interested in the application of advanced numerical techniques for simulating turbulent flows. The topic comprises two closely connected main subjects: modelling and computation, mesh pionts necessary to simulate complex turbulent flow.
| Author | : Roland Schiestel |
| Publisher | : John Wiley & Sons |
| Total Pages | : 751 |
| Release | : 2010-01-05 |
| Genre | : Science |
| ISBN | : 0470393467 |
Download Modeling and Simulation of Turbulent Flows Book in PDF, ePub and Kindle
This title provides the fundamental bases for developing turbulence models on rational grounds. The main different methods of approach are considered, ranging from statistical modelling at various degrees of complexity to numerical simulations of turbulence. Each of these various methods has its own specific performances and limitations, which appear to be complementary rather than competitive. After a discussion of the basic concepts, mathematical tools and methods for closure, the book considers second order closure models. Emphasis is placed upon this approach because it embodies potentials for clarifying numerous problems in turbulent shear flows. Simpler, generally older models are then presented as simplified versions of the more general second order models. The influence of extra physical parameters is also considered. Finally, the book concludes by examining large Eddy numerical simulations methods. Given the book’s comprehensive coverage, those involved in the theoretical or practical study of turbulence problems in fluids will find this a useful and informative read.
| Author | : Aleix Baez Vidal |
| Publisher | : |
| Total Pages | : 166 |
| Release | : 2019 |
| Genre | : |
| ISBN | : |
Download Filtering in the Numerical Simulation of Turbulent Compressible Flow with Sysmmetry Preserving Discretizations Book in PDF, ePub and Kindle
The present thesis investigates how explicit filters can be useful in numerical simulations of turbulent, compressible flow with symmetry preserving discretizations. Such explicit filters provide stability to simulations with shocks, provide stability to low-dissipation schemes on smooth flows and are used as test filters in LES turbulence models such as the Variational Multi-Scale eddy viscosity model or regularization models. The present thesis is a step forward in four main aspects. First, a comparative study of the Symmetry Preserving schemes for compressible flow is conducted. It shows that Rozema's scheme is more stable and accurate than the other schemes compiled fromthe literature. A sligh tmodification on this scheme is presented and shown to be more stable and accurate in unstructured meshes, but lesser accurate and stable in uniform, structured meshes. Second, a theoretical analysis of the properties of filters for CFD and their consequences on the derivation of the LES equations is conducted. The analysis shows how the diffusive properties of filters are necessary for the consistency of the model. Third, a study of explicit filtering on discrete variables identifies the necessary constraints for the fulfillment of the discrete counterpart of the filter properties. It puts emphases on the different possibilities when requiring the filters to be diffusive. After it, a new family of filters has been derived and tested in newly developed tests that allow the independent study of each property. And last, an algorithm to couple adaptive filtering with time integration is reported and tested on the 2D Isentropic Vortex and on the Taylor-Green vortex problem. Filtering is shown to enhance stability at the cost of locally adding diffusion. This saves the simulations from being diffusive everywhere. The resulting methodology is also shown to be potentially useful for shock-capturing purposes with the simulation of a shock-tube in a fully unstructured mesh.
