Eddy Structure Identification
Title | Eddy Structure Identification PDF eBook |
Author | J.P. Bonnet |
Publisher | Springer |
Pages | 366 |
Release | 2014-05-04 |
Genre | Science |
ISBN | 3709126762 |
This book is a unique opportunity to present in a single volume information that is needed for both experimentalists, theoreticians and computationalists for the detection, analysis, prediction and control of eddy structures in turbulent shear flows. Major identification techniques of Eddy Structures in Turbulent Shear Flows are presented together with applications to vortex dynamics, turbulence management and flow control, for experimental and numerical applications with new prediction methods: Eduction Schemes, Proper Orthogonal Decomposition, Stochastic Estimation, Pattern Recognition Analysis, Wavelet Transform. Illustrations of the use of the different methods are given.
Eddy Structure Identification in Free Turbulent Shear Flows
Title | Eddy Structure Identification in Free Turbulent Shear Flows PDF eBook |
Author | J.P. Bonnet |
Publisher | Springer Science & Business Media |
Pages | 504 |
Release | 2012-12-06 |
Genre | Technology & Engineering |
ISBN | 9401120986 |
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.
Eddy Structure Identification in Free Turbulent Shear Flows
Title | Eddy Structure Identification in Free Turbulent Shear Flows PDF eBook |
Author | Jean-Paul Bonnet |
Publisher | |
Pages | 204 |
Release | 1994 |
Genre | |
ISBN |
Selected Papers from a IUTAM Symposium Entitled "Eddy Structure Identification in Free Turbulent Shear Flows"
Title | Selected Papers from a IUTAM Symposium Entitled "Eddy Structure Identification in Free Turbulent Shear Flows" PDF eBook |
Author | |
Publisher | |
Pages | 199 |
Release | 1994 |
Genre | Eddies |
ISBN |
Direct and Large-Eddy Simulation I
Title | Direct and Large-Eddy Simulation I PDF eBook |
Author | Peter R. Voke |
Publisher | Springer Science & Business Media |
Pages | 438 |
Release | 2012-12-06 |
Genre | Technology & Engineering |
ISBN | 940111000X |
It is a truism that turbulence is an unsolved problem, whether in scientific, engin eering or geophysical terms. It is strange that this remains largely the case even though we now know how to solve directly, with the help of sufficiently large and powerful computers, accurate approximations to the equations that govern tur bulent flows. The problem lies not with our numerical approximations but with the size of the computational task and the complexity of the solutions we gen erate, which match the complexity of real turbulence precisely in so far as the computations mimic the real flows. The fact that we can now solve some turbu lence in this limited sense is nevertheless an enormous step towards the goal of full understanding. Direct and large-eddy simulations are these numerical solutions of turbulence. They reproduce with remarkable fidelity the statistical, structural and dynamical properties of physical turbulent and transitional flows, though since the simula tions are necessarily time-dependent and three-dimensional they demand the most advanced computer resources at our disposal. The numerical techniques vary from accurate spectral methods and high-order finite differences to simple finite-volume algorithms derived on the principle of embedding fundamental conservation prop erties in the numerical operations. Genuine direct simulations resolve all the fluid motions fully, and require the highest practical accuracy in their numerical and temporal discretisation. Such simulations have the virtue of great fidelity when carried out carefully, and repre sent a most powerful tool for investigating the processes of transition to turbulence.
Turbulence Structure and Modulation
Title | Turbulence Structure and Modulation PDF eBook |
Author | Alfredo Soldati |
Publisher | Springer |
Pages | 319 |
Release | 2014-05-04 |
Genre | Technology & Engineering |
ISBN | 370912574X |
Controlling turbulence is an important issue for a number of technological applications. Several methods to modulate turbulence are currently being investigated. This book describes various aspects of turbulence structure and modulation, and explains and discusses the most promising techniques in detail.
Eddy-Current Characterization of Materials and Structures
Title | Eddy-Current Characterization of Materials and Structures PDF eBook |
Author | George Birnbaum |
Publisher | ASTM International |
Pages | 522 |
Release | 1981 |
Genre | Technology & Engineering |
ISBN | 9780803107526 |