Turbulent compressible convection in a deep atmosphere. I - Preliminary two-dimensional results

Details Turbulent compressible convection in a deep atmosphere. I - Preliminary two-dimensional results Turbulent compressible convection in a deep atmosphere. I - Preliminary two-dimensional results

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..935c&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p. 935-943.

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42

Atmospheric Turbulence, Compressible Fluids, Computerized Simulation, Convective Flow, Stellar Atmospheres, Atmospheric Boundary Layer, Atmospheric Temperature, Flow Distribution, Mixing Length Flow Theory, Navier-Stokes Equation, Spatial Distribution, Stellar Evolution, Vertical Distribution

Scientific paper

The turbulent convection of a compressible fluid in a deep atmosphere is simulated by two-dimensional numerical computations, displaying coexisting 'cells' whose sizes range from the total depth of the convection zone to the smallest scale height at the top. While the largest cells traverse the entire zone, smaller ones are clustered near the top. The vertical correlation length of the vertical velocity is proportional to the local pressure or density scale height, in a way reminiscent of the concept of mixing length.

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