The vertical co-current downward air-water two-phase flow was studied under adiabatic condition in round tube test sections of 25.4-mm and 50.8-mm ID. In flow regime identification, a new approach was employed to minimize the subjective judgment. It was found that the flow regimes in the co-current downward flow strongly depend on the channel size. In addition, various local two-phase flow parameters were acquired by the multi-sensor miniaturized conductivity probe in bubbly flow. Furthermore, the area-averaged data acquired by the impedance void meter were analyzed using the drift flux model. Three different distributions parameters were developed for different ranges of non-dimensional superficial velocity, defined by the ration of total superficial velocity to the drift velocity.
Interfacial Structures and Regime Transition in Co-Current Downward Bubbly Flow
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division May 27, 2003; revised manuscript received September 16, 2003. Associate Editor: J. Katz.
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Kim, S., Paranjape, S. S., Ishii, M., and Kelly, J. (September 10, 2004). "Interfacial Structures and Regime Transition in Co-Current Downward Bubbly Flow ." ASME. J. Fluids Eng. July 2004; 126(4): 528–538. https://doi.org/10.1115/1.1777229
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