✦ LIBER ✦

Noise analysis of transmitted light beams for determining bubble velocity and gas holdup profiles in a bubble column

✍ Scribed by R.F. Mudde; R.A. Bakker; H.E.A. van den Akker

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 690 KB
Volume: 47
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(92)85079-q

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✦ Synopsis

Noise analysis techniques are used to construct bubble velocity and gas holdup profiles in an air/water bubble column. It is shown that the use of a laser renders reliable and consistent results. A comparison with local data obtained with a four-point glasfiber probe and the drift flux model of Bamea and Miirahi is made. The velocity profiles become steeper with increasing height in the column and with increasing gas flow rate. The holdup profiles are rather flat. The measurements are performed in a 50 mm inner-diameter tube and cover a holdup range from 2 % to 12 %.