9781848213951

Huge progress on wall bounded shear flows has been achieved in the past two decades. The salient progress in the field was the discovery of the wall coherence in the early 1960's. Several hundreds of papers have been published since, but there is no publication that presents this colossal amount of work in a comprehensive way. This book presents recent progresses in this area. Contents includes:- Introduction and basic concepts; Transport in wall bounded turbulent flows; Dissipation and its modeling in the inner layer; Near wall closures; Wall coherent structures and their one and multi-point detection; Genesis of coherent wall structures, streak instability, regeneration of wall quasi-streamwise vortices, self-sustaining mechanism, quasi-deterministic approach; Packets and very large structures; Dynamical system approach to wall turbulence, proper orthogonal decomposition, low order wall models, chaotic synchronization with impact to wall turbulence control.

TERM	PRICE	DUE
SEMESTER	$167.02	Aug 02
QUARTER	$158.67	Jul 19
SHORT TERM	$150.32	Jun 21

Sedat TARDU is Associate Professor at Grenoble University in France where he teaches turbulent shear flows, heat transfer, fluid dynamics and chaos. His research area includes canonical and non-canonical wall turbulence, active and passive control of near-wall turbulence, unsteady wall layers, mixing and micro mixing and microfluidics. He has been a visiting researcher in several universities (Ecole Polytechnique Fédérale de Lausanne, Imperial College London, Beihang Un. Beijing). He is the author of more than 250 papers in peer-reviewed journals, and international conferences as well as several chapters in books.

Chapter 1: Introduction and basic concepts

Chapter 2: Transport in wall bounded turbulent flows (Reynolds shear stress transport equations, rapid and slow terms, pressure fluctuations)

Chapter 3: Dissipation (Kolmogoroff scale distribution near the wall; Modeling dissipation in the inner layer; Zero-crossings and Liepmann scale.

Chapter 4: Closures (one and multi point closures in wall bounded turbulent flows)

Chapter 5: Wall coherent structures and their detection (historical outline of the discovery of wall coherence, streaks, quasi-streamwise vortices, one point detection (VITA, u, modified u-level and quadrant analysis, conditional averaging, Q2 and Lambda2 techniques).

Chapter 6: Genesis of coherent wall structures (streak instability, regeneration of wall quasi-streamwise vortices, self-sustaining mechanism, quasi-deterministic approach)

Chapter 7: Packets and very large structures (regeneration of packets of quasi-streamwise vortices and their amalgamation into very large outer structures; their comprehension and dynamical impact on the wall turbulence).

Chapter 8: Dynamical system approach to wall turbulence (proper orthogonal decomposition, low order wall models, chaotic synchronization with impact to wall turbulence control).

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Transport and Coherent Structures in Wall Turbulence

Transport and Coherent Structures in Wall Turbulence

1848213956

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