Filtering Techniques for Turbulent Flow Simulation

Author: Alvaro A. Aldama

Publisher: Springer Science & Business Media

ISBN:

Category: Science

Page: 397

View: 907

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.

Turbulent Flow Computation

Author: D. Drikakis

Publisher: Springer Science & Business Media

ISBN:

Category: Science

Page: 376

View: 920

In various branches of fluid mechanics, our understanding is inhibited by the presence of turbulence. Although many experimental and theoretical studies have significantly helped to increase our physical understanding, a comp- hensive and predictive theory of turbulent flows has not yet been established. Therefore, the prediction of turbulent flow relies heavily on simulation stra- gies. The development of reliable methods for turbulent flow computation will have a significant impact on a variety of technological advancements. These range from aircraft and car design, to turbomachinery, combustors, and process engineering. Moreover, simulation approaches are important in materials - sign, prediction of biologically relevant flows, and also significantly contribute to the understanding of environmental processes including weather and climate forecasting. The material that is compiled in this book presents a coherent account of contemporary computational approaches for turbulent flows. It aims to p- vide the reader with information about the current state of the art as well as to stimulate directions for future research and development. The book puts part- ular emphasis on computational methods for incompressible and compressible turbulent flows as well as on methods for analysing and quantifying nume- cal errors in turbulent flow computations. In addition, it presents turbulence modelling approaches in the context of large eddy simulation, and unfolds the challenges in the field of simulations for multiphase flows and computational fluid dynamics (CFD) of engineering flows in complex geometries. Apart from reviewing main research developments, new material is also included in many of the chapters.

Numerical Flow Simulation II

CNRS-DFG Collaborative Research Programme Results 1998–2000

Author: Ernst H. Hirschel

Publisher: Springer Science & Business Media

ISBN:

Category: Technology & Engineering

Page: 329

View: 944

The aim of this series is to publish promptly and in a de- tailed form new material from the field of Numerical Fluid Mechanics including the use of advanced computer systems. Published are reports on specialized conferences, workshops, research programs, and monographs. Contents: This volume contains nineteen reports on work, which is conducted since 1998 in the Collaborative Research Programme "Numerical Flow Simulation" of the Centre National de la Recherche Scientifique (CNRS) and the Deutsche Forschungsgemeinschaft (DFG). French and German engineers and mathematicians present their joint research on the topics "Development of Solution Techniques", "Crystal Growth and Melts", "Flows of Reacting Gases", and "Turbulent Flows". In the background of their work is the still strong growth of the performance of super-computer architectures, which, together with large advances in algorithms, is opening vast new application areas of numerical flow simulation in research and industrial work. Results of this programme from the period 1996 to 1998 have been presented in NNFM 66 (1998)

Large Eddy Simulation of Complex Engineering and Geophysical Flows

Author: Boris Galperin

Publisher: Cambridge University Press

ISBN:

Category: Technology & Engineering

Page: 600

View: 843

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.

AIAA Journal

Author: American Institute of Aeronautics and Astronautics

Publisher:

ISBN:

Category: Aeronautics

Page:

View: 710

Computational Methods in Water Resources XI: Computational methods in surface flow and transport problems

Author: Alvaro Alberto Aldama

Publisher: Computational Mechanics

ISBN:

Category: Technology & Engineering

Page: 520

View: 837

The two-volume set presents recent developments and applications of computational methods in surface and subsurface hydrology, including mathematical and numerical modelling of physical, biological and chemical processes related to water, as well as other associated topics such as algorithmic methodologies, parameter estimation and software development."

Numerical Simulations of Incompressible Flows

Author: M. M. Hafez

Publisher: World Scientific

ISBN:

Category: Mathematics

Page: 708

View: 950

This book consists of 37 articles dealing with simulation of incompressible flows and applications in many areas. It covers numerical methods and algorithm developments as well as applications in aeronautics and other areas. It represents the state of the art in the field. Contents: NavierOCoStokes Solvers; Projection Methods; Finite Element Methods; Higher-Order Methods; Innovative Methods; Applications in Aeronautics; Applications Beyond Aeronautics; Multiphase and Cavitating Flows; Special Topics. Readership: Researchers and graduate students in computational science and engineering."

Advances in DNS/LES

Proceedings of the First AFOSR International Conference on DNS/LES, Louisiana Tech University, Ruston, Louisiana, USA, August 4-8, 1997

Author: Chaoqun Liu

Publisher:

ISBN:

Category: Eddies

Page: 657

View: 945

JSME International Journal

Fluids engineering, heat transfer, power, combustion, thermophysical properties. Series II

Author:

Publisher:

ISBN:

Category: Fluid mechanics

Page:

View: 480

Coastal Sediments '91

Proceedings of a Specialty Conference on Quantitative Approaches to Coastal Sediment Processes, Seattle, Washington, June 25-27, 1991

Author: Nicholas C. Kraus

Publisher:

ISBN:

Category: Coast changes

Page: 2360

View: 825

Statistical Mechanics of Turbulent Flows

Author: Stefan Heinz

Publisher: Springer Science & Business Media

ISBN:

Category: Science

Page: 214

View: 501

The simulation of turbulent reacting flows, connected with environmental protection and the design of chemical and mechanical processes, is increasingly important. Statistical Mechanics of Turbulent Flows presents a modern overview of basic ways to calculate such flows. It discusses the fundamental problems related to the use of basic equations and their modifications. Special emphasis is placed on the discussion of very promising statistical methods which provide solutions to these problems by models for the underlying stochastic physics of turbulent reacting flows. Their foundations and important new developments up through current challenges are systematically explained. Students and researchers in atmospheric sciences and oceanography, mechanical and chemical engineering and applied mathematics and physics may use Statistical Mechanics of Turbulent Flows as a guide to solve many problems related, e.g. to the assessment of complex atmospheric chemistry, chemical reactor processes, turbulent combustion, and multi-phase flows.

Experimental and numerical investigation of time varying wakes behind turbine blades

results of the Industrial and Material Technology Aeronautics Research Project AER2-CT92-0048, 1992-1996

Author: European Commission. Directorate-General XII, Science, Research, and Development

Publisher: Friedr Vieweg & Sohn Verlagsgesellschaft

ISBN:

Category: Technology & Engineering

Page: 243

View: 425

Fourteenth International Conference on Numerical Methods in Fluid Dynamics

Proceedings of the Conference Held in Bangalore, India, 11–15 July 1994

Author: Christoph Meinel

Publisher: Springer

ISBN:

Category: Mathematics

Page: 588

View: 237

Computational Fluid Dynamics has now grown into a multidisciplinary activity with considerable industrial applications. The papers in this volume bring out the current status and future trends in CFD very effectively. They cover numerical techniques for solving Euler and Navier-Stokes equations and other models of fluid flow, along with a number of papers on applications. Besides the 88 contributed papers by research workers from all over the world, the book also includes 6 invited lectures from distinguished scientists and engineers.