Double-diffusive convection occurs when the competition between stabilizing and a destabilizing buoyancy source is mediated by a difference in the diffusivity of each source. Such convection is important in a wide variety of astrophysical and geophysical flows. However, in giant planets, double-diffusive convection occurs in regions where condensation of important components of the atmosphere occurs. Here, we present preliminary calculations of moist, double-diffusive convection using the Dedalus pseudospectral framework. Using a simple model for phase change, we verify growth rates for moist double diffusive convection from linear calculations and report on preliminary relationships between the ability to form liquid phase and the resulting Nusselt number in nonlinear simulations.
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Authors
Jeffrey Oishi
Bates College
Keaton J Burns
Massachusetts Institute of Technology
Department of Physics, MIT
Benjamin Brown
Dept. Astrophysical & Planetary Sciences, University of Colorado -- Boulder, Boulder, CO 80309, USA
Astrophysical and Planetary Sciences, University of Colorado, Boulder
University of Colorado Boulder
University of Colorado
Daniel Lecoanet
Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544, USA
Princeton Center for Theoretical Sciences, Princeton University
Princeton Center for Theoretical Science, Princeton University
Princeton University
Princeton Univ
Geoffrey Vasil
School of Mathematics & Statistics, University of Sydney, NSW 2006, Australia
School of Mathematics & Statistics, University of Sydney
