Calculation of the phase separation rate in two‐phase flow of non‐Newtonian power‐law fluid and gas bubbles flowing inside the T‐ and Y‐junctions using random vortex method (RVM)

Abstract

AbstractIn this paper, the phase separation rate in a two‐phase flow of non‐Newtonian power‐law fluid and gas bubbles flowing inside T‐ and Y‐junction channels with branch angles of 45° and 135° is numerically investigated. The numerical simulation is carried out using the random vortex method (RVM) for the Reynolds number of liquid phase at the inlet of the channel Rem = 250 for various power‐law indexes (n = 0.2–1.4). The result of this research represents valuable information about the effect of branch angle and also the power‐law index on the phase separation. The result shows that when increasing the branch angle, the phase separation is increased, while when increasing the power‐law index, the phase separation is decreased. The acceptable conformation between this study and the experimental results shows the capability of the evaluated method.