Print Email Facebook Twitter Effects of electrically conductive walls on turbulent magnetohydrodynamic flow in a continuous casting mold Title Effects of electrically conductive walls on turbulent magnetohydrodynamic flow in a continuous casting mold Author Blishchik, A. (TU Delft ChemE/Transport Phenomena) Glavinić, Ivan (Helmholtz Zentrum Dresden Rossendorf) Wondrak, Thomas (Helmholtz Zentrum Dresden Rossendorf) van Odyck, Daniel (Tata Steel Europe Limited) Kenjeres, S. (TU Delft ChemE/Transport Phenomena) Date 2022 Abstract In the present study, we have performed a series of numerical simulations of the turbulent liquid metal flow in a laboratory-scale setup of the continuous casting. The liquid metal flow was subjected to an external non-uniform magnetic field reproducing a realistic electromagnetic brake (EMBr) effect. The focus of this research was on the effects of the finite electrical conductivity of Hartmann walls on the flow and turbulence in the mold. To be able to simulate distributions of the electric potential and current in both the fluid and solid wall domains, we applied our recently developed and validated in-house conjugate MHD solver based on the open-source code OpenFOAM. The dynamic Large Eddy Simulation (LES) method was used to simulate the turbulent flow. The results obtained for the neutral (non-MHD) and MHD cases over a range of the imposed EMBr strengths – all for the perfectly electrically insulated walls – were compared with the available Ultrasound Doppler Velocimetry (UDV) measurements. A good agreement between simulations and experiments was obtained for all simulated cases. Next, we completed a series of simulations including a wide range of the finite electric conductivities (ranging from a weakly to perfectly conducting wall conditions) of the Hartmann walls for a fixed value of the imposed EMBr. The obtained results demonstrated a significant influence of the electric wall conductivities on the flow and turbulence reorganization. It is expected that here provided insights can be applicable for the new generation of the laboratory- and real-scale continuous casting setups. Subject Continuous castingDynamic LESElectrically conducting wallsLorentz forceMagnetic fieldMHDOpenFOAM To reference this document use: http://resolver.tudelft.nl/uuid:8f9c8fc1-b26b-48c5-b28e-4461421b7174 DOI https://doi.org/10.1016/j.ijheatfluidflow.2022.108967 ISSN 0142-727X Source International Journal of Heat and Fluid Flow, 95 Part of collection Institutional Repository Document type journal article Rights © 2022 A. Blishchik, Ivan Glavinić, Thomas Wondrak, Daniel van Odyck, S. Kenjeres Files PDF 1_s2.0_S0142727X2200042X_main.pdf 7.56 MB Close viewer /islandora/object/uuid:8f9c8fc1-b26b-48c5-b28e-4461421b7174/datastream/OBJ/view