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Title: Analysis and Modeling of Lithium Flows in Porous Materials

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.

Authors:
;  [1]
  1. West Lafayette, School of Nuclear Engineering, Purdue University (United States)
Publication Date:
OSTI Identifier:
22763246
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 44; Journal Issue: 7; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CRITICAL VELOCITY; EDGE LOCALIZED MODES; FIRST WALL; FREQUENCY DEPENDENCE; HYDROGEN; LIQUID METALS; LITHIUM; PERMEABILITY; PLASMA DISRUPTION; POROUS MATERIALS; SIMULATION; THERMONUCLEAR REACTORS

Citation Formats

Rudolph, J., and Miloshevsky, G., E-mail: gennady@purdue.edu. Analysis and Modeling of Lithium Flows in Porous Materials. United States: N. p., 2018. Web. doi:10.1134/S1063780X1807005X.
Rudolph, J., & Miloshevsky, G., E-mail: gennady@purdue.edu. Analysis and Modeling of Lithium Flows in Porous Materials. United States. doi:10.1134/S1063780X1807005X.
Rudolph, J., and Miloshevsky, G., E-mail: gennady@purdue.edu. Sun . "Analysis and Modeling of Lithium Flows in Porous Materials". United States. doi:10.1134/S1063780X1807005X.
@article{osti_22763246,
title = {Analysis and Modeling of Lithium Flows in Porous Materials},
author = {Rudolph, J. and Miloshevsky, G., E-mail: gennady@purdue.edu},
abstractNote = {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.},
doi = {10.1134/S1063780X1807005X},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 7,
volume = 44,
place = {United States},
year = {2018},
month = {7}
}