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Analysis and Modeling of Lithium Flows in Porous Materials

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Abstract

One of the primary conditions necessary for the success of magnetic fusion reactors is the ability to mitigate damage to the first wall during ELMs and plasma disruptions. A potential solution involves the use of flowing liquid metals such as lithium as a first wall, but ensuring its stability under the extreme environments in the reactor would be imperative. The conditions leading to instabilities on the free surface of flowing liquid lithium (LL) layers on a substrate and in a porous material are investigated using both analytical methods and computational modeling, with consideration for the effects of LL velocity, LL layer thickness, substrate porosity, LL permeability, and hydrogen (H) plasma velocity. Linear stability analysis is used to predict the critical velocity and wavelength-dependence of wave growth, as well as the onset of instability. The modeling of LL flows is performed on a flat substrate and in a porous material for various LL thicknesses, LL and H plasma velocities to analyze the conditions leading to droplet formation and ejection.

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Authors and Affiliations

  1. School of Nuclear Engineering, Purdue University, West Lafayette, Indiana, 47907, United States

    J. Rudolph & G. Miloshevsky

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  1. J. Rudolph
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  2. G. Miloshevsky
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Correspondence to G. Miloshevsky.

Additional information

Published in Russian in Fizika Plazmy, 2018, Vol. 44, No. 7, pp. 593–600.

The article is published in the original.

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Rudolph, J., Miloshevsky, G. Analysis and Modeling of Lithium Flows in Porous Materials. Plasma Phys. Rep. 44, 685–691 (2018). https://doi.org/10.1134/S1063780X1807005X

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  • DOI: https://doi.org/10.1134/S1063780X1807005X

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