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Effects of Granulation upon Larger-Scale Convection

2012/01/23 by Neal Hurlburt, N. E. Hurlburt, Marc L. DeRosa +7
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #Geomagnetism and Paleomagnetism Studies #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR #physics.flu-dyn

paper · pdf · doi:10.48550/arxiv.1201.4809

4 pages, 1 figure, to appear in Third Hinode Science Meeting proceedings

arxiv created 2012/01/23 · openalex publication_date 2012/01/23 · arxiv updated 2012/01/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We examine the role of small-scale granulation in helping to drive supergranulation and even larger scales of convection. The granulation is modeled as localized cooling events introduced at the upper boundary of a 3-D simulation of compressible convection in a rotating spherical shell segment. With a sufficient number of stochastic cooling events compared to uniform cooling, we find that supergranular scales are realized, along with a differential rotation that becomes increasingly solar-like.

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