Turbulent drag reduction by additives has long been a hot research topic. This phenomenon is inherently associated with multifold expertise. Solutions of drag-reducing additives are usually viscoelastic fluids having complicated rheological properties. Exploring the characteristics of drag-reduced turbulent flows calls for uniquely designed experimental and numerical simulation techniques and elaborate theoretical considerations. Pertinently understanding the turbulent drag reduction mecha...

How can the G20 fulfill their role most efficiently in the post-crisis era, and what role do the emerging economies play in the new global economic order? This timely volume provides an overview of the most important challenges ahead for the G20, especially China.