Author:
Alsaedi Sajda S,Shnain Zainab Y.,Rashed Musaab K.,Filip P
Abstract
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.
Reference31 articles.
1. Some observations on the flow of linear polymer solutions through straight tubes at large Reynolds numbers;Toms,1948
2. Drag-reducing surfactants;Hellsten;Journal of surfactants and detergents,2002
3. Environmentally acceptable drag-reducing surfactants for district heating and cooling;Harwigsson;Journal of the American Oil Chemists’ Society,1996
4. Drag reduction by additives;Lumley;Annual review of fluid mechanics,1969
5. New limiting drag reduction and velocity profile asymptotes for nonpolymeric additives systems;Zakin;AIChE Journal,1996
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献