Development and Evaluation of Turbulent Mixing Models
Author | : Eric R. Pardyjak |
Publisher | : |
Total Pages | : 290 |
Release | : 1996 |
Genre | : |
ISBN | : |
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Author | : Eric R. Pardyjak |
Publisher | : |
Total Pages | : 290 |
Release | : 1996 |
Genre | : |
ISBN | : |
Author | : Philip Thomas Harsha |
Publisher | : |
Total Pages | : 0 |
Release | : 1970 |
Genre | : Turbulence |
ISBN | : |
The problem of the analysis of free turbulent mixing is complex, and some empiricism is always necessary to obtain a solution. This has led to a proliferation of experiments and of semi-empirical models for the turbulent shear stress. All of these models will correlate experimental data well in some region of a particular flow, but not in others. The ultimate goal of the study is to confront each important model for the turbulent shear stress with as broad a range of experimental data as possible. From this confrontation come two sets of conclusions--one detailing those models presently suitable for engineering use, and the second establishing the models which show promise of becoming more generally applicable with further development.
Author | : Philip Thomas Harsha |
Publisher | : |
Total Pages | : 340 |
Release | : 1971 |
Genre | : Turbulence |
ISBN | : |
Author | : Fernando F. Grinstein |
Publisher | : |
Total Pages | : |
Release | : 2016 |
Genre | : TECHNOLOGY & ENGINEERING |
ISBN | : 9781316575048 |
Small-scale turbulent flow dynamics is traditionally viewed as universal and as enslaved to that of larger scales. In coarse grained simulation (CGS), large energy-containing structures are resolved, smaller structures are spatially filtered out, and unresolved subgrid scale (SGS) effects are modeled. Coarse Grained Simulation and Turbulent Mixing reviews our understanding of CGS. Beginning with an introduction to the fundamental theory the discussion then moves to the crucial challenges of predictability. Next, it addresses verification and validation, the primary means of assessing accuracy and reliability of numerical simulation. The final part reports on the progress made in addressing difficult non-equilibrium applications of timely current interest involving variable density turbulent mixing. The book will be of fundamental interest to graduate students, research scientists, and professionals involved in the design and analysis of complex turbulent flows.
Author | : Antoine Llor |
Publisher | : Springer Science & Business Media |
Total Pages | : 170 |
Release | : 2005-12-23 |
Genre | : Technology & Engineering |
ISBN | : 9783540283300 |
Part textbook, part exploratory work, this book aims to raise the awareness of students, physicists, and engineers in turbulence on the modeling of gravitationally induced turbulent mixing flows as produced, for instance, by Rayleigh-Taylor instabilities. The discussion is centered on the differences between single-fluid and two-fluid approaches, and it is illustrated with a 0D analysis of two specific elementary models in common use. Important deviations are shown to appear on many features, among others the prominence of directed energy, the simultaneous restitution of test cases, the responses to variable acceleration and shocks, and the behavior of various length scales.
Author | : Farhad A. Jaberi |
Publisher | : |
Total Pages | : 530 |
Release | : 1996 |
Genre | : |
ISBN | : |
Author | : Josette Bellan |
Publisher | : |
Total Pages | : 0 |
Release | : 2020 |
Genre | : Fluid dynamics (Space environment) |
ISBN | : 9781624105807 |
Describes observations and modelling of high-pressure flows encountered in aeronautics and astronautics. They have been selected to present the current understanding of high-pressure flows. Experimental, theoretical and numerical studies are all represented. Fundamental investigations are presented first, followed by practical studies.
Author | : S. Murthy |
Publisher | : Springer Science & Business Media |
Total Pages | : 469 |
Release | : 2013-11-11 |
Genre | : Science |
ISBN | : 1461587387 |
Turbulence, mixing and the mutual interaction of turbulence and chemistry continue to remain perplexing and impregnable in the fron tiers of fluid mechanics. The past ten years have brought enormous advances in computers and computational techniques on the one hand and in measurements and data processing on the other. The impact of such capabilities has led to a revolution both in the understanding of the structure of turbulence as well as in the predictive methods for application in technology. The early ideas on turbulence being an array of complicated phenomena and having some form of reasonably strong coherent struc ture have become well substantiated in recent experimental work. We are still at the very beginning of understanding all of the aspects of such coherence and of the possibilities of incorporating such structure into the analytical models for even those cases where the thin shear layer approximation may be valid. Nevertheless a distinguished body of "eddy chasers" has come into existence. The structure of mixing layers which has been studied for some years in terms of correlations and spectral analysis is also getting better understood. Both probability concepts such as intermittency and conditional sampling as well as the concept of large scale structure and the associated strain seem to indicate possibilities of distinguishing and synthesizing 'engulfment' and molecular mixing.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2006 |
Genre | : |
ISBN | : |
Analysis of subgrid scale modeling approaches for large-eddy simulation of turbulent mixing in spatially developing round jets.
Author | : |
Publisher | : |
Total Pages | : 1102 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |