On the levitation force in horizontal core-annular flow with a large viscosity ratio and small density ratio

A numerical study has been made of horizontal core-annular flow: the flow of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a horizontal pipe. Special attention is paid to the question how the buoyancy force on the core, caused by a density difference between the core and the annular layer, is...

Lubricated transport of heavy oil: Simulation of multiphase flow with OpenFOAM

A numerical study, using the volume-of-fluid method, has been made of vertical (upward) core-annular flow: the flow of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a vertical pipe. The numerical results are compared against theoretical results from linear stability calculations and against experimental...