Numerical simulation of the gas-liquid flow inside a horizontal static mixer

Abstract

<jats:p>The gas-liquid flow inside a horizontal static mixer was numerically investigated by using Euler-Euler Computational Fluid Dynamics (CFD) simulations. The results confirm that the liquid superficial velocity plays a significant role on the mixing behavior of the gas and liquid. The mixing behavior in this present study at a liquid superficial velocity of 0.2 m/s was the worst both axially and radially. Increasing the liquid superficial velocity significantly improve the mixing between gas and liquid. However, the unwanted gas layer still can be found at the superficial liquid velocity less than 0.8 m/s. A good mixing behavior in this study was achieved at a relatively high velocity (i.e. larger than 0.8 m/s).</jats:p>

Gas-Liquid Flow in a Vertical Pipe Equipped with a Double Helical Swirl Separator Element

“…The swirling streamlines improves as the liquid superficial velocity increases similar to the phenomenon observed e.g. in [10], [11], [22]. In the case of & ' = 1.0 m/s, the highly swirling streamlines with the highest velocity (see Fig.…”

“…As an addition, the bubble induced turbulence model proposed by [14] was used in the CFD simulations. [11].…”

“…To have a more detail description on gas-liquid flows behavior in the swirl separator, two-phase Computational Fluid Dynamics (CFD) was used in this work. Since the liquid superficial velocity was reported to have a significant role in the gas-liquid characteristic inside a static mixer [10], [11] thus the liquid superficial velocity was varied in the present CFD simulations to investigate its influence on the separation behavior.…”