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Title: Electromagnetic control of heat transport within a rectangular channel filled with flowing liquid metal

The behavior of free-surface, liquid-metal flows exposed to both magnetic fields and an injected electric current is investigated via experiment and numerical simulations. The purpose of this paper is to provide an experimental and theoretical proof-of-concept for enhanced thermal mixing within fast-flowing, free-surface, liquid-metal plasma facing components that could be used in next-generation fusion reactors. The enhanced hydrodynamic and thermal mixing induced by non-uniform current density near the electrodes appears to improve heat transfer through the thickness of the flowing metal. Also, the outflow heat flux profile is strongly affected by the impact of the J × B forces on flow velocity. The experimental results are compared to COMSOL simulations in order to lay the groundwork for future liquid-metal research.
Authors:
 [1] ;  [2] ;  [2] ;  [2]
  1. KTH Royal Inst. of Technology, Stockholm (Sweden). Nordic Inst. for Theoretical Physics (Nordita); Stockholm Univ. (Sweden); Princeton Univ., NJ (United States). Dept. of Mechanical and Aerospace Engineering
  2. Princeton Univ., NJ (United States). Dept. of Mechanical and Aerospace Engineering
Publication Date:
Grant/Contract Number:
AC02-09CH11466; 637-2014-465
Type:
Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 1; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Research Org:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1426197

Modestov, M., Kolemen, E., Fisher, A. E., and Hvasta, M. G.. Electromagnetic control of heat transport within a rectangular channel filled with flowing liquid metal. United States: N. p., Web. doi:10.1088/1741-4326/aa8bf4.
Modestov, M., Kolemen, E., Fisher, A. E., & Hvasta, M. G.. Electromagnetic control of heat transport within a rectangular channel filled with flowing liquid metal. United States. doi:10.1088/1741-4326/aa8bf4.
Modestov, M., Kolemen, E., Fisher, A. E., and Hvasta, M. G.. 2017. "Electromagnetic control of heat transport within a rectangular channel filled with flowing liquid metal". United States. doi:10.1088/1741-4326/aa8bf4.
@article{osti_1426197,
title = {Electromagnetic control of heat transport within a rectangular channel filled with flowing liquid metal},
author = {Modestov, M. and Kolemen, E. and Fisher, A. E. and Hvasta, M. G.},
abstractNote = {The behavior of free-surface, liquid-metal flows exposed to both magnetic fields and an injected electric current is investigated via experiment and numerical simulations. The purpose of this paper is to provide an experimental and theoretical proof-of-concept for enhanced thermal mixing within fast-flowing, free-surface, liquid-metal plasma facing components that could be used in next-generation fusion reactors. The enhanced hydrodynamic and thermal mixing induced by non-uniform current density near the electrodes appears to improve heat transfer through the thickness of the flowing metal. Also, the outflow heat flux profile is strongly affected by the impact of the J × B forces on flow velocity. The experimental results are compared to COMSOL simulations in order to lay the groundwork for future liquid-metal research.},
doi = {10.1088/1741-4326/aa8bf4},
journal = {Nuclear Fusion},
number = 1,
volume = 58,
place = {United States},
year = {2017},
month = {11}
}