Large-Scale Control of Wall Turbulence synthesizes and interprets research on large scale drag control. In particular, the book looks at the underlying, physical mechanisms of large-scale control, especially focusing on an investigation of coherent structures and the statistical approach through momentum flux and energy flux. In the presence of a solid wall, the flow, and thus turbulence, is directly influenced. As reduction of wall turbulence is of great significance for energy saving and environmental protection, this book provides the latest information on a variety of key considerations.
Numerous drag control strategies have been proposed and explored during recent decades, the vast majority of which concentrate on near-wall coherent structures, which can result in significant drag reductions at low Reynolds numbers. However, whether these drag control methods can continue to be effective at high Reynolds numbers remains unresolved. This question is crucial because the flow physics involved in drag reduction changes at high Reynolds numbers (because the contribution of large-scale structures to the skin friction grows with the Reynolds number).
- Explores a wide range of flow control techniques, including active and passive methods
- Takes an interdisciplinary approach that combines fluid mechanics, control theory, and computational methods
- Demonstrates practical strategies for implementing flow control techniques in real-world scenarios
