Flow pattern maps in adiabatic mini and micro tubes in gas–liquid and liquid–liquid systems
are discussed, emphasizing the phenomena that characterize two-phase flows in small …

We study the injection flow of a heavy viscoplastic fluid into a light Newtonian fluid, via
modelling and experiments. The injection is carried out downward, via an eccentric inner …

Eccentric core-annular flow is encountered in water-lubricated transport of highly viscous oil
in horizontal pipes. The core eccentricity results from the tendency of the phases to stratify …

One of the big challenges in transporting heavy oils through the pipelines is the high
pressure drop due to the effect of viscosity and shear-thinning fluid behaviour of oil. Core …

The transportation of heavy oil surrounded by water annular can significantly reduce the
resistance and reduce energy consumption. In the process of conveying high viscosity oil, it …

With the depletion of conventional light crude oil, heavy crude oil will occupy an increasing
share of the energy structure in the 21st century. Heavy crude oil is characterized by an API …

Core annular flow (CAF) has been proved to be one of the solutions of the heavy oil
transportation through pipeline. This study conducted a 3D computational fluid dynamics to …

Exact solutions for separated two-phase flows are useful as a benchmark for numerical
codes and for testing closure relations for simplified 1D Two-Fluid models. In particular, the …

Water-lubricated transportation of viscous oil is an important application of core annular flow
(CAF), which significantly reduces friction pressure drop and saves pump power. However …

A possible innovative technology of foam injection for facilitating the transportation of heavy
oils is explored. To this aim, a numerical study on flow characteristics of highly viscous oil …