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DY: Fachverband Dynamik und Statistische Physik

DY 50: Poster: Nonlinear Systems, Patterns, Flows ..

DY 50.4: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster B2

Simulation of horizontally rotating compressible convection: Towards the Boussinesq limit — •Kevin Lüdemann and Andreas Tilgner — Institut für Geophysik, Georg-August-Universität Göttingen, Deutschland

The band structure on Jupiter consisting of alternating east and west winds stems from compressible convective motion under the influence of Coriolis force. In order to investigate this structure, a numerical study of an ideal gas is performed in a cuboid geometry with gravitation in vertical direction and rotation around a horizontal axis. This geometry in a 3D case has been investigated before but only with an incompressible fluid in the Boussinesq approximation. Density and temperature scale heights are additional parameters in the compressible equations. Those are varied towards the Boussinesq limit for validation. Furthermore a parameter study of the thermal transport shows a decrease during departure from incompressibility as has also been proposed in prior work. At the same time, plume outbursts loose strength and a crossover from convective rolls to the thermal wind is observed.