Turbulence and Coherent Structures by O Mtais

Turbulence and Coherent Structures by O Mtais

In the last 25 years, one of the most striking advances in Fluid Mecha- nics was certainly the discovery of coherent structures in turbulence: lab- oratory experiments and numerical simulations have shown that most turbulent flows exhibit both spatially-organized large-scale structures and disorganized motions, generally at smaller scales. The develop- ment of new measurement and visualization techniques have allowed a more precise characterization and investigation of these structures in the laboratory. Thanks to the unprecedented increase of computer power and to the development of efficient interactive three-dimensional colour graphics, computational fluid dynamicists can explore the still myste- rious world of turbulence. However, many problems remain unsolved concerning the origin of these structures, their dynamics, and their in- teraction with the disorganized motions. In this book will be found the latest results of experimentalists, theoreticians and numerical modellers interested in these topics. These coherent structures may appear on airplane wings or slender bodies, mixing layers, jets, wakes or boundary-layers. In free-shear flows and in boundary layers, the results presented here highlight the intense three-dimensional character of the vortices. The two-dimensional large- scale eddies are very sensitive to three-dimensional perturbations, whose amplification leads to the formation of three-dimensional coherent vorti- cal structures, such as streamwise, hairpin or horseshoe vortex filaments. This book focuses on modern aspects of turbulence study. Relations between turbulence theory and optimal control theory in mathematics are discussed. This may have important applications with regard to, e. g., numerical weather forecasting.

SKU	Unavailable
ISBN 13	9780792306467
ISBN 10	0792306465
Title	Turbulence and Coherent Structures
Author	Marcel Lesieur
Series	Fluid Mechanics And Its Applications
Condition	Unavailable
Binding Type	Hardback
Publisher	Kluwer Academic Publishers
Year published	1990-11-30
Number of pages	626
Cover note	Book picture is for illustrative purposes only, actual binding, cover or edition may vary.