Direct numerical simulation of MHD turbulent free surface flow

Shin Ichi Satake; Tomoak Kunugi; Sergey Smolentsev

doi:10.1299/kikaib.68.755

Direct numerical simulation of MHD turbulent free surface flow

Shin Ichi Satake
, Tomoak Kunugi
, Sergey Smolentsev

Blanket and Fuel Cycle

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A direct numerical simulation (DNS) of turbulent free surface flow with a constant magnetic field has been carried out to grasp and understand the effects of electromagnetic suppression of turbulence. In this study, the Reynolds number based on bulk velocity and a film depth was set to be constant, Re_b = 2 300. The constant static magnetic field at Ha = 20 and 30 for the streamwise orientation and at Ha = 5 and 10 for the spanwise orientation were considered in the electrical potential equation. The number of computational grids used in this study was 256 × 128 × 128 in the x^-, y^- and z^- directions, respectively. The turbulent quantities such as the mean flow, turbulent stresses and the turbulent statistics were obtained. The mean velocity and turbulent intensities distributed from the wall to the free surface are damped quickly near wall region, because of the electromagnetic effects.

Original language	English
Pages (from-to)	755-760
Number of pages	6
Journal	Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	68
Issue number	667
DOIs	https://doi.org/10.1299/kikaib.68.755
State	Published - Mar 2002

Keywords

Direct numerical
Free surface flow
Magnetohydrodynamics
Turbulent flow

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10.1299/kikaib.68.755

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title = "Direct numerical simulation of MHD turbulent free surface flow",

abstract = "A direct numerical simulation (DNS) of turbulent free surface flow with a constant magnetic field has been carried out to grasp and understand the effects of electromagnetic suppression of turbulence. In this study, the Reynolds number based on bulk velocity and a film depth was set to be constant, Reb = 2 300. The constant static magnetic field at Ha = 20 and 30 for the streamwise orientation and at Ha = 5 and 10 for the spanwise orientation were considered in the electrical potential equation. The number of computational grids used in this study was 256 × 128 × 128 in the x-, y- and z- directions, respectively. The turbulent quantities such as the mean flow, turbulent stresses and the turbulent statistics were obtained. The mean velocity and turbulent intensities distributed from the wall to the free surface are damped quickly near wall region, because of the electromagnetic effects.",

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T1 - Direct numerical simulation of MHD turbulent free surface flow

AU - Satake, Shin Ichi

AU - Kunugi, Tomoak

AU - Smolentsev, Sergey

PY - 2002/3

Y1 - 2002/3

N2 - A direct numerical simulation (DNS) of turbulent free surface flow with a constant magnetic field has been carried out to grasp and understand the effects of electromagnetic suppression of turbulence. In this study, the Reynolds number based on bulk velocity and a film depth was set to be constant, Reb = 2 300. The constant static magnetic field at Ha = 20 and 30 for the streamwise orientation and at Ha = 5 and 10 for the spanwise orientation were considered in the electrical potential equation. The number of computational grids used in this study was 256 × 128 × 128 in the x-, y- and z- directions, respectively. The turbulent quantities such as the mean flow, turbulent stresses and the turbulent statistics were obtained. The mean velocity and turbulent intensities distributed from the wall to the free surface are damped quickly near wall region, because of the electromagnetic effects.

AB - A direct numerical simulation (DNS) of turbulent free surface flow with a constant magnetic field has been carried out to grasp and understand the effects of electromagnetic suppression of turbulence. In this study, the Reynolds number based on bulk velocity and a film depth was set to be constant, Reb = 2 300. The constant static magnetic field at Ha = 20 and 30 for the streamwise orientation and at Ha = 5 and 10 for the spanwise orientation were considered in the electrical potential equation. The number of computational grids used in this study was 256 × 128 × 128 in the x-, y- and z- directions, respectively. The turbulent quantities such as the mean flow, turbulent stresses and the turbulent statistics were obtained. The mean velocity and turbulent intensities distributed from the wall to the free surface are damped quickly near wall region, because of the electromagnetic effects.

KW - Direct numerical

KW - Free surface flow

KW - Magnetohydrodynamics

KW - Turbulent flow

UR - https://www.scopus.com/pages/publications/0036523609

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DO - 10.1299/kikaib.68.755

M3 - Article

AN - SCOPUS:0036523609

SN - 0387-5016

VL - 68

SP - 755

EP - 760

JO - Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

IS - 667

ER -

Direct numerical simulation of MHD turbulent free surface flow

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