Abstract
In this paper, the ability of three types of drag reduction agents (DRAs) has been investigated to assess the impact of adding a small amount part per million (ppm) of polymer and surfactant, as well as nanoparticle substances, as drag improvers of internal flow via a pipeline network. The selected DRAs have been tested in the rotating disk apparatus (RDA) at various concentrations in the range of (50-1200) ppm and various rotating disk velocities in the range of (50-3000) rpm. Multiple trials have been done to figure out the best substance for enhancing drag force reduction. Impacts of the shear rate on viscosity (μ) at various concentrations of polymer and surfactant solutions have been analyzed with rheologic tests. The results detect that all selected substances have proved to be effective drag improvers in internal flow. Torque values were decreased with increased DRA concentrations, which caused a significant increase in drag reduction percentage (%DR). The drag reduction percentage of complex solutions at the highest concentration of 1200 ppm, results in around (44-47) % DR. In contrast, the results of the individual solutions at the same concentration results in around (32-38) % DR.
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