It has become a well-known fact that finding sustainable solutions to the unavoidable high
pressure losses accompanying pipeline flows to increase the pumping capacity without …

Several decades following Tom's discoveries on polymeric drag reducing agents (DRA)
continue to see research efforts to produce robust and shear-stable DRA. Most efforts …

The conventional mainstream method of polymer additives for reducing drag in pipes is
disadvantageous from certain environmental perspectives. This paper aims to go against the …

Experimental methods and data treatment for evaluating efficiency of various drag reducing
agents (DRA) for turbulent flows of crude oil are discussed. Besides shearing, elongation is …

In this study, a HMW anionic co-polymer of 40: 60wt/wt NaAMPS/acrylamide was used as a
drag reducing polymer (DRP) for oil–water flow in a horizontal 25.4 mm ID acrylic pipe. The …

The effects of drag-reducing polymers on the flow patterns, pressure gradients, and drag-
reducing rates of oil–water two-phase flows were investigated using a horizontal acrylic pipe …

Polymers are effective drag reducers owing to their ability to suppress the formation of
turbulent eddies at low concentrations. Existing drag reduction methods can be generally …

This paper presents a comprehensive experimental investigation concerning the effect of
drag reducing polymers (DRP) on enhancing the throughput and reducing the pressure drop …

Experiments of air–water two phase heat transfer and frictional pressure drop without and
with polyacrylamide (PAM) additive in a horizontal smooth circular tube were conducted. A …

This paper suggests and discusses different drag reduction methods for two-phase
horizontal flows through pipes. Two-phase flows are the simplest and most common among …