AN EXPERIMENTAL INVESTIGATION OF BUBBLE MOTION IN TURBULENT LIQUID STREAM. Final Report-1
The motion of single air bubbles in a water stream flowing turbulently in a 4'' x 4'' vertical conduit is investigated by photographic means. The bulk water velocity ranges from 40.8 to 267 cm/sec corresponding to a system Reynolds number range of 48,600 to 386,000. Both tap and demineralized water were used at room or near room temperatures. Air bubbles range from 0.038 to 0.80 cm in equivalent radius and the corresponding bubble Reynolds number based on relative velocity ranges from 58 to 4,500. Graphs showing the variation of bubble relative velocity with equivalent radius are presented for both tue tap and demineralized water with the system Reynolds number as a parameter. The drag coefficient versus bubble Reynolds number plot is given and compared with that of a solid sphere and also with the air bubble data in calm water due to Haberman and Morton. In addition, the Weber number and tue drag coefficient are plotted as a function of the Eotvos number. The variation of the aspect ratio of bubbles with equivalent radius is examined. The effect of the interaction between parent- satellite bubbles is discussed, and taeir motion is compared witu that of single bubbles. An analysis of the optical effects with pertinert correction procedures is included in the Appendix in additlon to an error estimation. (auth)
- Research Organization:
- Illinois. Univ., Urbana. Engineering Experiment Station
- NSA Number:
- NSA-17-032250
- OSTI ID:
- 4664108
- Report Number(s):
- TID-19224; ME-TN-1069-1
- Country of Publication:
- United States
- Language:
- English
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