Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

Best Paper Award Selection - Editorial Board Site

2003, Volume10

Issue 1-2

162 pages

DOI: 10.1615/JFlowVisImageProc.v10.i12

Issue price - $280.00

Herchang Ay
Department of Mechanical Engineering Southern Taiwan University of Technology Tainan 71005, Taiwan

The dye injection method is employed to visualize two-dimensional admixture and diffusion of pulverized coal injected into the blowpipe in the blast furnace. Both the single lance and the double lances are studied. Water is used as working fluid. The velocity ratio and the lance inlet are varied. The lance inlet-angle is fixed as 13°. The jet-width growth rates and the trajectories of jets are not obviously influenced by the velocity ratio in the range 0.1 Ј v/U Ј 0.18. For the double lances, much faster jet-width growth rates than those for the single lance under the same test conditions were disclosed, but the flows gradually move away from the center of the blowpipe after impinging. In contrast, the eccentric double lances, two lances arranged asymmetrically to avoid impingement of two coal flows and obtain excellent jet-width growth rates, are suggested in the study for pulverized coal injection.

DOI: 10.1615/JFlowVisImageProc.v10.i12.80 Download article, 12 pages

Article price - $35.00

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