Numerical Simulations of Convective Accretion Flows in Three Dimensions
Igumenshchev, Igor V.
Abramowicz, Marek A.
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CitationIgumenshchev, Igor V., Marek A. Abramowicz, and Ramesh Narayan. 2000. “Numerical Simulations of Convective Accretion Flows in Three Dimensions.” The Astrophysical Journal 537 (1): L27–30. https://doi.org/10.1086/312755.
AbstractAdvection-dominated accretion flows (ADAFs) are known to be convectively unstable for low values of the viscosity parameter a. Two-dimensional axisymmetric hydrodynamic simulations of such flows reveal a radial density profile that is significantly flatter than the rho proportional to r(-3/2) expected for a canonical ADAF. The modified density profile is the result of inward transport of angular momentum by axisymmetric convective eddies. We present three-dimensional hydrodynamic simulations of convective ADAFs that are free of the assumption of axisymmetry. We find that the results are qualitatively and quantitatively similar to those obtained with two-dimensional simulations. In particular the convective eddies are nearly axisymmetric and transport angular momentum inward.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41384927
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