Multiphase Transport Phenomena in Microfluidic systems
نویسنده
چکیده
Microscale multiphase flows (gas-liquid and liquid-liquid) possess a number of unique properties and have applications ranging from use in microchemical synthesis systems to heat exchangers for IC chips and miniature fuel cells. Our work is focused on gas-liquid flows in microfabricated channels of rectangular or triangular cross section. We characterize the phase distribution and pressure drop of such flows and apply such information to a systematic design of gas-liquid microchemical reactors. The inherently transient nature of such multiphase flows provides a rich variety of flow regimes and dynamic flow properties. Characterization is done using pulsed-laser fluorescence microscopy and confocal microscopy (spinning disk and scanning), as well as by integrated flow regime sensors. Superficial gas and liquid velocities were varied between 0.01-100 m/s and 0.001-10 m/s, respectively.
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