11th World Congress on Industrial Process Tomography
Flow reconstruction of liquid metal Rayleigh-Bénard convection using Contactless Inductive Flow Tomography
R. Mitra*, M. Sieger, F. Stefani, V. Galindo, S. Eckert, T. Wondrak
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, Department Magnetohydrodynamics, Bautzner Landstraße 400, 01328 Dresden - Germany.
*Email: r.mitra@hzdr.de
ABSTRACT
Convection in liquid metal filled containers can lead to highly transient flows that need to be understood to increase the efficiency of mass and heat transport in numerous processes. Contactless Inductive Flow Tomography (CIFT) can reconstruct the global three-dimensional (3D) flow field in conducting fluids and overcome the constraints of optical techniques for such opaque liquids. In this paper, we investigate the applicability of CIFT to a large cylindrical convection cell of height 640 mm and diameter 320 mm, filled with the eutectic metal alloy GaInSn. Numerical simulations determine a feasible sensor layout with qualitatively good results. Based on the numerical findings, an experimental system is constructed and a preliminary experiment is conducted. The global CIFT measurement results have been verified with simultaneous local ultrasound Doppler velocimetry (UDV) measurements that show a remarkable agreement.
Keywords: Three-dimensional flow reconstruction, inductive flow tomography, Rayleigh-Bénard convection, liquid metal flow.
Industrial Application: General.
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