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PubMed · 15447003

Dislocation dynamics in Rayleigh-Bénard convection.

Th Walter·W Pesch·E Bodenschatz
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Abstract

Theoretical results on the dynamics of dislocations in Rayleigh-Bénard convection are reported both for a Swift-Hohenberg model and the Oberbeck-Boussinesq equations. For intermediate Prandtl numbers the motion of dislocations is found to be driven by the superposition of two independent contributions: (i) the Peach-Koehler force and (ii) an advection force on the dislocation core by its self-generated mean flow. Their competition allows to explain the experimentally observed bound dislocation pairs.

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ConvectionModels, TheoreticalNonlinear DynamicsPhysicsTime FactorsJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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Th Walter, W Pesch, E Bodenschatz. 2004. Dislocation dynamics in Rayleigh-Bénard convection.. https://doi.org/10.1063/1.1772231

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