LES OF MHD TURBULENT TAYLOR-COUETTE FLOW IN AXIAL MAGNETIC FIELD

Hiromichi Kobayashi; Ryo Sasaki; Takayasu Fujino; Hidemasa Takana

LES OF MHD TURBULENT TAYLOR-COUETTE FLOW IN AXIAL MAGNETIC FIELD

Hiromichi Kobayashi, Ryo Sasaki, Takayasu Fujino, Hidemasa Takana

Faculty of Law

Research output: Contribution to conference › Paper › peer-review

Abstract

Large eddy simulation (LES) of magnetohydrodynamic (MHD) turbulent Taylor-Couette (TC) flows is conducted to reveal the effect of the Hartmann number proportional to the axial magnetic field strength on the flow and electric current fields. The upper-lower walls are insulated and the inner-outer sidewalls are set to insulating walls (open condition) or perfectly conducting walls (short condition). As increasing the Hartmann number, turbulent fluctuations are suppressed, and the turbulent flow distributions approach the MHD laminar flow distributions. The orientations of turbulent vortices change from the azimuthal flow direction to the axial magnetic field direction even in the TC flow. The triplet high-speed streaky structures are uncovered near the inner wall.

Original language	English
Publication status	Published - 2022
Event	12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022 - Osaka, Virtual, Japan Duration: 2022 Jul 19 → 2022 Jul 22

Conference

Conference	12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022
Country/Territory	Japan
City	Osaka, Virtual
Period	22/7/19 → 22/7/22

ASJC Scopus subject areas

Aerospace Engineering
Atmospheric Science

Cite this

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title = "LES OF MHD TURBULENT TAYLOR-COUETTE FLOW IN AXIAL MAGNETIC FIELD",

abstract = "Large eddy simulation (LES) of magnetohydrodynamic (MHD) turbulent Taylor-Couette (TC) flows is conducted to reveal the effect of the Hartmann number proportional to the axial magnetic field strength on the flow and electric current fields. The upper-lower walls are insulated and the inner-outer sidewalls are set to insulating walls (open condition) or perfectly conducting walls (short condition). As increasing the Hartmann number, turbulent fluctuations are suppressed, and the turbulent flow distributions approach the MHD laminar flow distributions. The orientations of turbulent vortices change from the azimuthal flow direction to the axial magnetic field direction even in the TC flow. The triplet high-speed streaky structures are uncovered near the inner wall.",

author = "Hiromichi Kobayashi and Ryo Sasaki and Takayasu Fujino and Hidemasa Takana",

note = "Publisher Copyright: {\textcopyright} 2022 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022. All rights reserved.; 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022 ; Conference date: 19-07-2022 Through 22-07-2022",

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TY - CONF

T1 - LES OF MHD TURBULENT TAYLOR-COUETTE FLOW IN AXIAL MAGNETIC FIELD

AU - Kobayashi, Hiromichi

AU - Sasaki, Ryo

AU - Fujino, Takayasu

AU - Takana, Hidemasa

PY - 2022

Y1 - 2022

N2 - Large eddy simulation (LES) of magnetohydrodynamic (MHD) turbulent Taylor-Couette (TC) flows is conducted to reveal the effect of the Hartmann number proportional to the axial magnetic field strength on the flow and electric current fields. The upper-lower walls are insulated and the inner-outer sidewalls are set to insulating walls (open condition) or perfectly conducting walls (short condition). As increasing the Hartmann number, turbulent fluctuations are suppressed, and the turbulent flow distributions approach the MHD laminar flow distributions. The orientations of turbulent vortices change from the azimuthal flow direction to the axial magnetic field direction even in the TC flow. The triplet high-speed streaky structures are uncovered near the inner wall.

AB - Large eddy simulation (LES) of magnetohydrodynamic (MHD) turbulent Taylor-Couette (TC) flows is conducted to reveal the effect of the Hartmann number proportional to the axial magnetic field strength on the flow and electric current fields. The upper-lower walls are insulated and the inner-outer sidewalls are set to insulating walls (open condition) or perfectly conducting walls (short condition). As increasing the Hartmann number, turbulent fluctuations are suppressed, and the turbulent flow distributions approach the MHD laminar flow distributions. The orientations of turbulent vortices change from the azimuthal flow direction to the axial magnetic field direction even in the TC flow. The triplet high-speed streaky structures are uncovered near the inner wall.

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UR - http://www.scopus.com/inward/citedby.url?scp=85143803464&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85143803464

T2 - 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022

Y2 - 19 July 2022 through 22 July 2022

ER -

LES OF MHD TURBULENT TAYLOR-COUETTE FLOW IN AXIAL MAGNETIC FIELD

Abstract

Conference

ASJC Scopus subject areas

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