An adiabatic experiment was conducted to investigate the effect of channel geometry on gas-liquid two-phase flow characteristics in horizontal microchannels. A water-nitrogen gas mixture was pumped through a 96 μm square microchannel and the resulting flow pattern, void fraction and frictional pressure drop data were compared with those previously reported by the authors for a 100 μm circular microchannel. The pressure drop data were best estimated using a separated-flow model and the void fraction increased non-linearly with volumetric quality, regardless of the channel shape. However, the flow maps exhibited transition boundaries that were shifted depending on the channel shape.
Two-Phase Flow Through Square and Circular Microchannels—Effects of Channel Geometry
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 March 17, 2004. Associate Editor: J. Katz.
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Chung, P. M., Kawaji, M., Kawahara, A., and Shibata, Y. (September 10, 2004). "Two-Phase Flow Through Square and Circular Microchannels—Effects of Channel Geometry ." ASME. J. Fluids Eng. July 2004; 126(4): 546–552. https://doi.org/10.1115/1.1777227
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