Wall bounded turbulent flows are of major importance in industrial and environmental fluid mechanics. The structure of the wall turbulence is intrinsically related to the coherent structures that play a fundamental role in the transport process. The comprehension of their regeneration mechanism is indispensable for the development of efficient strategies in terms of drag control and near wall turbulence management. This book provides an up-to-date overview on the progress made in this specific area in recent years.
Wall turbulence is encountered in many technological applications as well as in the atmosphere, and a detailed understanding leading to its management would have considerable beneficial consequences in many areas. A lot of inspired work by experimenters, theoreticians, engineers and mathematicians has been accomplished over recent decades on this important topic and Statistical Approach to Wall Turbulence provides an updated and integrated view on the progress made in this area.
Wall turbulence is a complex phenomenon that has several industrial applications, such as in aerodynamics, turbomachinery, geophysical flows, internal engines, etc. Several books exist on fluid turbulence, but Statistical Approach to Wall Turbulence is original in the sense that it focuses solely on the turbulent flows bounded by solid boundaries. The book covers the different physical aspects of wall turbulence, beginning with classical phenomenological aspects before advancing to recent research in the effects of the Reynolds numbers, near wall coherent structures, and wall turbulent transport process.
This book would be of interest to postgraduate and undergraduate students in mechanical, chemical, and aerospace engineering, as well as researchers in aerodynamics, combustion, and all applications of wall turbulence.
Wall turbulence control is a major subject, the investigation of which involves significant industrial, environmental and fundamental consequences. Wall Turbulence Control addresses recent advances achieved in active and passive wall turbulence control over the past two decades. This valuable reference for scientists, researchers and engineers provides an updated view of the research into this topic, including passive control, optimal and suboptimal control methodology, linear control and control using adaptive methods (neural networks), polymer and bubble injection, electromagnetic control and recent advances in control by plasma.
Les écoulements turbulents en contact des parois sont fortement répandus dans la nature et dans la pratique industrielle. L'un des multiples enjeux est le contrôle et la maîtrise de la traînée turbulente. Une réduction de quelques pourcents de cette traînée dans les transports terrestres permettrait d'économiser des dizaines de milliards d'euros de carburant chaque année et de réduire notre impact sur l'environnement. Des structures cohérentes, identifiables, et donc manipulables, gèrent le transfert de quantité de mouvement ainsi que celui des scalaires. Ces structures se génèrent et se maintiennent à travers un mécanisme complexe dont l'étude est primordiale pour le développement de stratégies de contrôle et la maîtrise des problèmes environnementaux. Destiné aux chercheurs, aux étudiants en Master et aux élèves ingénieurs, cet ouvrage propose une analyse synthétique des dernières avancées du domaine.
