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Turbulence suppression in combustion-driven magnetohydrodynamic channels

Published online by Cambridge University Press:  21 April 2006

J. C. Reis  and
C. H. Kruger
J. C. Reis
Affiliation:
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
C. H. Kruger
Affiliation:
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
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Abstract

The effects of a magnetic field on core turbulence, mean-velocity boundary-layer profiles, turbulence-intensity boundary-layer profiles and turbulent spectral-energy distributions have been experimentally determined for combustion-driven magneto-hydrodynamic (MHD) flows. The turbulence suppression of the core was found to be similar to that of liquid-metal MHD flows, even though the turbulent structure was entirely different. The mean-velocity and turbulence-intensity boundary-layer profiles were affected much less than those of liquid-metal flows, primarily because the low-temperature thermal boundary layer reduced the electrical conductivity near the wall. No spectral dependence of turbulence suppression was observed in the core.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 188 , March 1988 , pp. 147 - 157
Copyright
© 1988 Cambridge University Press

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