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Natural convection in horizontal pipe flow with a strong transverse magnetic field

Published online by Cambridge University Press:  27 February 2013

Oleg Zikanov ,
Yaroslav I. Listratov  and
Valentin G. Sviridov
Oleg Zikanov*
Affiliation:
Department of Mechanical Engineering, University of Michigan - Dearborn, 4901 Evergreen Road, Dearborn, MI 48128-1491, USA
Yaroslav I. Listratov
Affiliation:
Moscow Power Engineering Institute, 14 Krasnokazarmennaya Street, Moscow, 111250, Russian Federation
Valentin G. Sviridov
Affiliation:
Moscow Power Engineering Institute, 14 Krasnokazarmennaya Street, Moscow, 111250, Russian Federation
*
†Email address for correspondence: zikanov@umich.edu
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Abstract

Linear stability analysis and direct numerical simulations are conducted to analyse mixed convection in a liquid metal flow in a horizontal pipe with imposed transverse magnetic field. The pipe walls are electrically insulated and subject to constant flux heating in the lower half. The results reveal the nature of anomalous temperature fluctuations detected in earlier experiments. It is found that, at the magnetic field strength far exceeding the laminarization threshold, the natural convection develops in the form of coherent quasi-two-dimensional rolls aligned with the magnetic field. Transport of the rolls by the mean flow causes high-amplitude, low-frequency fluctuations of temperature.

JFM classification

Convection: Convection
Type
Papers
Information
Journal of Fluid Mechanics , Volume 720 , 10 April 2013 , pp. 486 - 516
Copyright
©2013 Cambridge University Press

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