MHD-Computersimulationen zur Begleitung des Projektes DRESDyn

by Oliver Goepfert
Doctoral thesis
Date of Examination:2018-12-12
Date of issue:2019-03-15
Advisor:Prof. Dr. Andreas Tilgner
Referee:Prof. Dr. Andreas Tilgner
Referee:Prof. Dr. Gert Lube
Persistent Address: http://dx.doi.org/10.53846/goediss-7321

 

 

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Abstract

English

Numeric simulations of rotating flows are often limited by effects in the boundary layer, which need a very high grid resolution. This work investigates the ability of precession driven flows to amplify magnetic fields due to the dynamo effect in a cubic geometry. Here, free-slip boundary conditions are used instead of more problematic no-slip conditions while calculating a DNS system on gpu-computing machines. This provides further insights into dynamics of rotating fluid generally and supports the forced precession experiment realized by DRESDyn.
Keywords: magnetohydrodynamics; precession; numerical simulation; computational fluid dynamics
 
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