Hydrodynamic instability and the mechanisms for turbulence onset and self-sustaining are two research questions that have puzzled the scientists for over a century, yet renewed interest and significant progress occurr...Hydrodynamic instability and the mechanisms for turbulence onset and self-sustaining are two research questions that have puzzled the scientists for over a century, yet renewed interest and significant progress occurred in the last decade or so. We know only few exact analytical solutions of the Navier-Stokes equations, the equations governing the flow of simple fluids like water and air, and most of these are never observed in applications or laboratory experiments since these configurations are prone to instabilities that quickly bring the flow to the turbulent regime.展开更多
文摘Hydrodynamic instability and the mechanisms for turbulence onset and self-sustaining are two research questions that have puzzled the scientists for over a century, yet renewed interest and significant progress occurred in the last decade or so. We know only few exact analytical solutions of the Navier-Stokes equations, the equations governing the flow of simple fluids like water and air, and most of these are never observed in applications or laboratory experiments since these configurations are prone to instabilities that quickly bring the flow to the turbulent regime.
