Eddy Structure Identification in Free Turbulent Shear Flows: Selected Papers from the Iutam Symposium Entitled: "Eddy Structures Identification in Fre

ISBN-13: 9780792324492 / Angielski / Twarda / 1993 / 502 str.

J. P. Bonnet; M. N. Glauser; J. P. Bonnet

Opis

The existence and crucial role played by large-scale, organized motions in turbulent flows are now recognized by industrial, applied and fundamental researchers alike. It has become increasingly evident that coherent structures influence mixing, noise, vibration, heat transfer, drag, etc... The accelera tion of the development of both experimental and computational programs devoted to this topic has been evident at several recent international meet ings. One of the first questions which experimentalists or numerical analysts are faced with is: how can these structures be separated from the background turbulence? This is a nontrivial task because the coherent structures are gen erally embedded in a random field and the technique used to determine when and where certain structures are passing, or their averaged characteristics (in the more probable or dominant role sense) is directly related to the definition of the coherent structure. Several methods or approaches are available and the choice of a particular one is generally dependent on the desired informa tion. This choice depends not only on the definition of the structure, but also on the experimental and numerical capabilities available to the researcher.

Spis treści

Preface. I: Large and Small Scales Dynamics. II: Conditional Sampling I: Vorticity-Based Methods. III: Conditional Sampling II: Other Methods. IV: Wavelets. V: Pattern Recognition Analysis. VI: Proper Orthogonal Decomposition. VII: Stochastic Estimation. VIII: Combined or Comparative Approaches. IX: Topological Concepts. X: Full Field Methods. XI: Compressible Flows. Author Index. Colour Plates.