Study of Interfacial Structures: Bubbly Flow in 1.27 cm Diameter Pipe
- Purdue University, West Lafayette, IN 47907 (United States)
- U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001 (United States)
The objective of the present research is to study the flow regime map, the detailed interfacial structures, and the bubble transport in an adiabatic air-water two-phase flow mixture, flowing upward through a vertical round pipe having 1.27 cm. inner diameter. The flow regime map is obtained by processing the characteristic signals acquired from an impedance void meter, using a self-organized neural network. The local two-phase flow parameters are measured by the state-of-the-art four-sensor conductivity probe at three axial locations in the pipe. The measured local parameters include void fraction ({alpha}), interfacial area concentration (a{sub i}), bubble frequency (f{sub b}), bubble velocity (U{sub b}) and bubble Sauter mean diameter (D{sub sm}). The radial profiles of these parameters and their development along the axial direction reveals the structure of the two phase mixture and the bubble interaction mechanisms. (authors)
- Research Organization:
- The ASME Foundation, Inc., Three Park Avenue, New York, NY 10016-5990 (United States)
- OSTI ID:
- 21072898
- Country of Publication:
- United States
- Language:
- English
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