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Rayleigh-Bénard Convection in a Vertical Magnetic Field at Low Prandtl Number

Schindler, Felix; Zürner, Till; Vogt, Tobias; Eckert, Sven; Schumacher, Jörg

11th PAMIR International Conference- Fundamental and Applied MHD July 1-5, 2019, Reims, EVEM France

The present work shows the experimental realisation of three-dimensional
magnetoconvection studies at Rayleigh numbers between 10e6 and 6 · 10e7 and Hartmann
numbers up to 1000 in a Rayleigh-Bénard convection cell. The fluid in the cell is the
GaInSn metal alloy with a low Prandtl number of 0.029. The flow is investigated using
thermocouples and ultrasound-Doppler-velocimetry. The change of the Nusselt number
with increasing Hartmann number is studied and presented. Experimental results are
compared to other experiments and simulations.

 

Support by Deutsche Forschungsgemeinschaft with grants VO 2332/1-1 and SCHU 1410/29-1
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  • 10.1007/978-3-642-19981-3

  • 10.1007/s11663-018-1491-5

  • 10.1017/jfm.2018.479

  • 10.1017/S0022112096004491

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  • 10.1073/pnas.1812260115

  • 10.1103/PhysRevE.62.R4520

  • 10.1103/PhysRevFluids.2.123501

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