Open Hearth Furnace Models

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A DESCRIPTION was given in a letter in Nature of March 27, p. 479, of the use of aluminium powder for flow visualization in a water model of an open hearth furnace. It has since been shown that part of the pattern was due to air bubbles, and that if these are eliminated the aluminium shows up as extremely short light streaks due to the rapidly changing orientation of the disk-shaped particles during the exposure period.

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PHILIP, A. Open Hearth Furnace Models. Nature 162, 188 (1948) doi:10.1038/162188a0

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