Two-phase annular flow in vertical pipes is one of the most common and important flow
regimes in fluid mechanics, particularly in the field of building drainage systems where …

This paper focuses on investigating the dynamic behaviour of foam flows, including flow
regimes, their transitions and pressure profiles in relation to foam characteristics (foam …

Foam flows containing particles are present in many applications including mining,
wastewater treatment, environmental remediation of contaminants such as PFAS using foam …

In this work, the influence of surfactants on air–water flow was studied by performing
experiments in a 12 metre long, 50 mm inner diameter, vertical pipe at ambient conditions …

Surfactant-based foam drainage technology is a favored method of liquid accumulation
removal, and it has been demonstrated as an efficient way to improve gas production …

Based on our earlier experimental work on the effect of surfactants on air-water flow in
vertical pipes with internal diameters of 34 mm, 50 mm, and 80 mm, we create a mechanistic …

This paper aims to investigate and demonstrate, for the first time, the feasibility of using an
artificial lift system, referred to as foam assisted gas lift (FAGL) for dewatering …

From field experience in the gas industry, it is known that injecting surfactants at the bottom
of a gas well can prevent liquid loading. To better understand how the selection of the …

In this work, we relate the foam formation at a sparger with the dynamics of the surface
tension, represented by the surface tension reduction rate (R 1/2). In our experimental setup …

Liquid loading is a common phenomenon for natural gas gathering and transportation in
hilly terrain pipelines, and traditional mechanical pigging technology is usually employed to …