On the decay of cosmic turbulence

Details On the decay of cosmic turbulence On the decay of cosmic turbulence

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...221..395k&link_type=abstract

Astrophysical Journal, Part 1, vol. 221, Apr. 15, 1978, p. 395-398.

Astronomy and Astrophysics

Astrophysics

1

Cosmology, Galactic Evolution, Homogeneous Turbulence, Isotropic Turbulence, Energy Transfer, Gas Expansion, Navier-Stokes Equation, Universe

Scientific paper

The consideration of homogeneous, incompressible, isotropic, nonrelativistic turbulence in a uniformly expanding universe shows that the derivation of the decay of rms velocity from the Loitsyanskii invariant is in general incorrect. It is shown that this derivation is valid only in the terminal stages of the decay. It is concluded that the Loitsyanskii invariant is not an invariant when the inertial transfer of energy dominates viscous dissipation.

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