|
The Origin of Turbulence
- Turbulence has its origins in the inherent instabilities of laminar flow
- Pufs and Slugs are turbulent structures and are obtainable in transitional pipe flows (Boundary Layer Theory by H. Schlichting)
- Turbulence dies out due to viscous damping unless some mechanisms keep on pumping energy into the velocity fluctuations
- The most important mechanism for generating and maintaining turbulence is shear in the mean flow
- Other mechanisms are : Stirring and Buoyancy
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|