Fluid Dynamics in Bubble Stirred Ladles Part I
Laughlin, David E.
Air is supplied through a porous plug placed in the center axis of a cylindrical perspex-water model of a ladle. A Laser-Doppler system is employed to measure radial and axial mean and fluctuating velocities. Velocities in the two-phase bubbly region can also be determined. Velocities are measured near the bottom, half-way up, and near the free surface. It is shown that the bubbles contribute to production of turbulence. The ladle has recirculation zones near the bottom, where the mean velocities are very low. Close to the free surface the radial mean and turbulent velocities are high, promoting mass transfer through the interface. The present measured velocity profiles cannot be reduced to a single profile by employing similarity scaling.
S. T. Johansen et al., "Fluid Dynamics in Bubble Stirred Ladles Part I," Metallurgical Transactions B, vol. 19, no. 4, pp. 745-754, Springer Verlag, Aug 1988.
The definitive version is available at http://dx.doi.org/10.1007/BF02650194
Materials Science and Engineering
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Article - Journal
© 1988 Springer Verlag, All rights reserved.