The hydrodynamical alpha-effect in a compressible medium

Details The hydrodynamical alpha-effect in a compressible medium The hydrodynamical alpha-effect in a compressible medium

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jfm...225..355k&link_type=abstract

Journal of Fluid Mechanics (ISSN 0022-1120), vol. 225, April 1991, p. 355-369.

Statistics

Applications

20

Compressible Flow, Helical Flow, Homogeneous Turbulence, Isotropic Turbulence, Vorticity, Earth Atmosphere, Interstellar Gas, Reynolds Stress, Spiral Galaxies, Viscosity

Scientific paper

The problem of the interaction of large-scale vortices with small-scale homogeneous isotropic helical turbulence in a compressible medium is considered. Averaged equations are derived using a closure procedure which is based on the functional technique. It is shown that the averaged vorticity equation has solutions that grow exponentially in time and which describe the effect of amplification of large-scale helical vortices by turbulence (hydrodynamical alpha-effect). The dependence of the growth rate on the compressibility is analyzed, the limiting cases of incompressible fluid and turbulence delta-correlated in time being considered. The applications of the hydrodynamical alpha-effect discussed include the earth's atmosphere and interstellar gas of spiral galaxies.

Affiliated with

Also associated with

No associations

Rating

The hydrodynamical alpha-effect in a compressible medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The hydrodynamical alpha-effect in a compressible medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hydrodynamical alpha-effect in a compressible medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1792933