Gas—liquid annular flow under microgravity conditions: a temporal linear stability study |
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Authors: | Igor Carron and Frederick R. Best |
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Affiliation: | Interphase Transport Phenomena Laboratory, Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843-3133, U.S.A. |
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Abstract: | A temporal linear stability study was performed for a gas—liquid annular flow configuration under microgravity conditions. Data used to validate the modeling includes that generated by Texas A&M as well as all the other known data in two-phase flow under reduced gravity conditions. Following a discussion of theoretical considerations on the growth rates of different instabilities, it is shown that given the fluid properties, pipe diameter and phasic flow rates, one can predict with a high level of confidence the flow regime in the pipe. Acceptable confidence levels (80%) are achieved when one differentiates between slug, slug—annular, and annular flow. Higher confidence levels (90%) are found when one differentiates between slug and annular flow by merging the annular and slug—annular categories. |
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Keywords: | gas—liquid two-phase flow annular flow microgravity conditions linear stability analysis experiment/theory |
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