Astrophysics (Index)About


(turbulent flow)
(irregular flow of a fluid)

Turbulence (or turbulent flow) is chaotic flow of a fluid. It is characterized by changes in flow velocity and pressure over space and time, and eddies, i.e., circular or swirling flows, often lasting only a short time. In contrast, a laminar flow has the fluid flowing in an organized fashion, potentially continuously. In astronomy, turbulence in Earth atmosphere is a contributor to seeing issues. It can be detected in gases, e.g., within stars or clouds, through the analysis of spectral lines.

(physics,fluid dynamics)
Further reading:

Referenced by pages:
alpha disk
core collapse supernova (CCSN)
Darcy velocity field
dense core
Doppler broadening
giant planet formation
gravitational instability model
interstellar holography
kilometer size barrier
Kolmogorov spectrum
line broadening
Mach number
molecular cloud turbulence
mixing length theory
magnetorotational instability (MRI)
quenched galaxy
Rayleigh number (Ra)
Reynolds decomposition
Reynolds number (Re)
spectral line
turbulent pressure
Wilson-Bappu effect