Experimental and numerical analysis of free surface deformation in an electrically driven flow

Kharicha, Abdellah; Teplyakov, I. O.; Ivochkin, Yu. P.; Wu, Menghuai; Ludwig, Andreas; Guseva, A.

doi:10.1016/j.expthermflusci.2014.11.014

Cited by 22 publications

(9 citation statements)

References 19 publications

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“…Many studies on swirling electrovortex flows have focused on the flow driven in a hemispherical device and under a very thin (tip) electrode; see, for example, Bojarevičs & Shcherbinin (1983), Davidson (1992), Kharicha et al. (2015), Ivochkin et al. (2015), Vinogradov et al.…”

Section: Minimal Magnetic Field Strength To Enhance Mixingmentioning

confidence: 99%

Efficient mixing by swirling electrovortex flows in liquid metal batteries

et al. 2021

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Section: Minimal Magnetic Field Strength To Enhance Mixingmentioning

confidence: 99%

Efficient mixing by swirling electrovortex flows in liquid metal batteries

et al. 2021

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“…Magnetohydrodynamic (MHD) flow plays a key role in many industrial applications such as aerodynamics [1], crystal growth [2], thermonuclear fusion [3], and metallurgy [4]. Several works have been devoted to the analysis and control of liquid metal flow and heat transfer in these engineering applications in rectangular [5][6][7][8], circular [9][10][11], triangular [12,13], trapezoidal [14], variable cross section and curved ducts [15].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Buoyancy Effect on Magnetohydrodynamic Three-Dimensional LiPb Flow in a Rectangular Duct

Tigrine

Mokhtari

Bouabdallah

et al. 2017

Journal of Fluids Engineering

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In this paper, the effect of transverse magnetic field on a laminar liquid lead lithium flow in an insulating rectangular duct is numerically solved with three-dimensional (3D) simulations. Cases with and without buoyancy force are examined. The stability of the buoyant flow is studied for different values of the Hartmann number from 0 to 120. We focus on the combined influence of the Hartmann number and buoyancy on flow field, flow structure in the vicinity of walls and its stability. Velocity and temperature distributions are presented for different magnetic field strengths. It is shown that the magnetic field damps the velocity and leads to flow stabilization in the core fluid and generates magnetohydrodynamic (MHD) boundary layers at the walls, which become the main source of instabilities. The buoyant force is responsible of the generation of vortices and enhances the velocities in the core region. It can act together with the MHD forces to intensify the flow near the Hartmann layers. Two critical Hartmann numbers (Hac1 = 63, Hac2 = 120) are found. Hac1 is corresponding to the separation of two MHD regimes: the first one is characterized by a core flow maximum velocity, whereas the second regime is featured by a maximum layer velocity and a pronounced buoyancy effect. Hac2 is a threshold value of electromagnetic force indicating the onset of MHD instability through the generation of small vortices close to the side layers.

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“…A typical poloidal flow develops as it was often observed experimentally [47,[85][86][87][88][89]. Similar flow structures are very well known from vacuum arc remelting and electro-slag remelting [90][91][92][93][94][95][96][97]. However, depending on the exact geometry, the direction of the flow might be reversed [98][99][100][101].…”

Section: Resultsmentioning

confidence: 63%

Electromagnetically driven convection suitable for mass transfer enhancement in liquid metal batteries

Weber

Nimtz

Personnettaz

et al. 2018

Applied Thermal Engineering

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Liquid metal batteries (LMBs) were recently proposed as cheap large scale energy storage. Such devices are urgently required for balancing highly fluctuating renewable energy sources. During discharge, intermetallic phases tend to form in the cathode of LMBs. These do not only limit the up-scalability, but also the efficiency of the cells. Generating a mild fluid flow in the fully liquid cell will smoothen concentration gradients and minimise the formation of intermetallics.In this context we study electro-vortex flow numerically. We simulate a recent LMB related experiment and discuss how the feeding lines to the cell can be optimised to enhance mass transfer. The Lorentz forces have to overcome the stable thermal stratification in the cathode of the cell; we show that thermal effects may reduce electro-vortex flow velocities considerable. Finally, we study the influence of the Earth magnetic field on the flow.

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Experimental and numerical analysis of free surface deformation in an electrically driven flow

Cited by 22 publications

References 19 publications

Efficient mixing by swirling electrovortex flows in liquid metal batteries

Efficient mixing by swirling electrovortex flows in liquid metal batteries

Numerical Study of the Buoyancy Effect on Magnetohydrodynamic Three-Dimensional LiPb Flow in a Rectangular Duct

Electromagnetically driven convection suitable for mass transfer enhancement in liquid metal batteries

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