01890nas a2200157   4500008004100000022001400041245009800055210006900153260007100222300001400293490000700307520124000314100002101554700002801575856012901603       2009                        eng d  a0888-588500aTwo-phase flow in minichannels: hydrodynamics, pressure drop, and residence time distribution0 aTwophase flow in minichannels hydrodynamics pressure drop and re  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP  a8193-82040 v483 a<p>Two-phase flow in mini-channels (1 mm x 1.5 mm x 430 mm and 1.5 mm x 0.5 mm x 430 mm serpentine channel geometry) made in different materials (SS 316, PMMA and Teflon) was studied at different flow rate ratio (0.66, 1.0 and 1.56) of the two immiscible fluids. A dual syringe pump was used to pump the fluids (air-water and water-kerosene) through the channels. For characterization of the two phase flow, experiments were carried out to measure the slug size distribution and relevant hydrodynamic properties, pressure drop across a single serpentine unit (i.e., one sinusoidal unit that includes two 180 degrees return bends connected by a straight portion of 20 mm) and also the residence time distribution of water. In all the cases, the effect of material of fabrication on the hydrodynamics was significant. Apart from flow rates and flow rate ratio of the two fluids, the slug size distribution was seen to have a strong effect of the channel orientation (vertical, horizontal) and also the flow direction (up-flow and down-flow). In the RTD studies, the response curve observed at the end of the channel was significantly different than the published literature. The reasons for such observations are discussed in detail.</p>1 aKulkarni, A., A.1 aKalyani, Vishwanath, S.  uhttps://library.ncl.res.in/content/two-phase-flow-minichannels-hydrodynamics-pressure-drop-and-residence-time-distribution-0