Optical-based experiments were carried out using the immiscible pair of liquids hexane and water in a vertically oriented Taylor–Couette reactor operated in a semibatch mode. The dispersed droplet phase (hexane) was continually fed and removed from the reactor in a closed loop setup. The continuous water phase did not enter or exit the annular gap. Four distinct flow patterns were observed including (1) a pseudo-homogenous dispersion, (2) a weakly banded regime, (3) a horizontally banded dispersion, and (4) a helical flow regime. These flow patterns can be organized into a two-dimensional regime map using the azimuthal and axial Reynolds numbers as axes. In addition, the dispersed phase holdup was found to increase monotonically with both the azimuthal and axial Reynolds numbers. The experimental observations can be explained in the context of a competition between the buoyancy-driven axial flow of hexane droplets and the wall-driven vortex flow of the continuous water phase.
Flow Regimes in Two-Phase Hexane/Water Semibatch Vertical Taylor Vortex Flow
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received September 28, 2018; final manuscript received April 3, 2019; published online May 17, 2019. Assoc. Editor: Pierre E. Sullivan.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Campbell, C., Olsen, M. G., and Dennis Vigil, R. (May 17, 2019). "Flow Regimes in Two-Phase Hexane/Water Semibatch Vertical Taylor Vortex Flow." ASME. J. Fluids Eng. November 2019; 141(11): 111203. https://doi.org/10.1115/1.4043493
Download citation file:
- Ris (Zotero)
- Reference Manager