Gas-assisted displacement of viscoelastic fluids: Flow dynamics at the bubble front
The penetration of a long inviscid bubble through ideal elastic fluids in a capillary tube geometry is studied using particle tracking velocimetry. Experiments are performed to characterize the fluid kinematics around the bubble tip. We also perform the flow field simulations for the Newtonian fluids using POLYFLOW. A comparison of the results from experiments and simulations is presented in order to validate experimental techniques.
scientific article; zbMATH DE number 1342481