Turbulent and electrical phenomena in a liquid metal MHD energy conversion device under various load conditions

Hiromichi Kobayashi, Yoshihiro Okuno

Research output: Contribution to journalArticle

Abstract

We numerically simulate the turbulent phenomena in a liquid metal MHD energy conversion device under various load conditions (open-circuit, short-circuit, and externally applied current) with non-uniform magnetic flux densities. The large eddy currents under the open-circuit condition promote the recurrence of turbulence on the sidewalls in the downstream region, while the strong Lorentz force (upstream on average) near the electrodes due to a large load current under the short-circuit condition suppresses the turbulence transition from the sidewalls. The strong Lorentz force (downstream on average) produced by external current curbs eddies in the electrodes area, while turbulence appears again just in the downstream region.

Original languageEnglish
Pages (from-to)773-778
Number of pages6
JournalIEEJ Transactions on Power and Energy
Volume136
Issue number10
DOIs
Publication statusPublished - 2016

Fingerprint

Magnetohydrodynamics
Liquid metals
Energy conversion
Lorentz force
Turbulence
Short circuit currents
Curbs
Electrodes
Networks (circuits)
Magnetic flux
Eddy currents

Keywords

  • Eddy
  • Liquid metal flow
  • Lorentz force
  • MHD energy conversion
  • Turbulence

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Turbulent and electrical phenomena in a liquid metal MHD energy conversion device under various load conditions. / Kobayashi, Hiromichi; Okuno, Yoshihiro.

In: IEEJ Transactions on Power and Energy, Vol. 136, No. 10, 2016, p. 773-778.

Research output: Contribution to journalArticle

@article{7893e7946d434063be2e90082dbb7da4,
title = "Turbulent and electrical phenomena in a liquid metal MHD energy conversion device under various load conditions",
abstract = "We numerically simulate the turbulent phenomena in a liquid metal MHD energy conversion device under various load conditions (open-circuit, short-circuit, and externally applied current) with non-uniform magnetic flux densities. The large eddy currents under the open-circuit condition promote the recurrence of turbulence on the sidewalls in the downstream region, while the strong Lorentz force (upstream on average) near the electrodes due to a large load current under the short-circuit condition suppresses the turbulence transition from the sidewalls. The strong Lorentz force (downstream on average) produced by external current curbs eddies in the electrodes area, while turbulence appears again just in the downstream region.",
keywords = "Eddy, Liquid metal flow, Lorentz force, MHD energy conversion, Turbulence",
author = "Hiromichi Kobayashi and Yoshihiro Okuno",
year = "2016",
doi = "10.1541/ieejpes.136.773",
language = "English",
volume = "136",
pages = "773--778",
journal = "IEEJ Transactions on Power and Energy",
issn = "0385-4213",
publisher = "The Institute of Electrical Engineers of Japan",
number = "10",

}

TY - JOUR

T1 - Turbulent and electrical phenomena in a liquid metal MHD energy conversion device under various load conditions

AU - Kobayashi, Hiromichi

AU - Okuno, Yoshihiro

PY - 2016

Y1 - 2016

N2 - We numerically simulate the turbulent phenomena in a liquid metal MHD energy conversion device under various load conditions (open-circuit, short-circuit, and externally applied current) with non-uniform magnetic flux densities. The large eddy currents under the open-circuit condition promote the recurrence of turbulence on the sidewalls in the downstream region, while the strong Lorentz force (upstream on average) near the electrodes due to a large load current under the short-circuit condition suppresses the turbulence transition from the sidewalls. The strong Lorentz force (downstream on average) produced by external current curbs eddies in the electrodes area, while turbulence appears again just in the downstream region.

AB - We numerically simulate the turbulent phenomena in a liquid metal MHD energy conversion device under various load conditions (open-circuit, short-circuit, and externally applied current) with non-uniform magnetic flux densities. The large eddy currents under the open-circuit condition promote the recurrence of turbulence on the sidewalls in the downstream region, while the strong Lorentz force (upstream on average) near the electrodes due to a large load current under the short-circuit condition suppresses the turbulence transition from the sidewalls. The strong Lorentz force (downstream on average) produced by external current curbs eddies in the electrodes area, while turbulence appears again just in the downstream region.

KW - Eddy

KW - Liquid metal flow

KW - Lorentz force

KW - MHD energy conversion

KW - Turbulence

UR - http://www.scopus.com/inward/record.url?scp=84990854968&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84990854968&partnerID=8YFLogxK

U2 - 10.1541/ieejpes.136.773

DO - 10.1541/ieejpes.136.773

M3 - Article

AN - SCOPUS:84990854968

VL - 136

SP - 773

EP - 778

JO - IEEJ Transactions on Power and Energy

JF - IEEJ Transactions on Power and Energy

SN - 0385-4213

IS - 10

ER -