Abstract
AbstractMore and more attention is paid to the synergistic drag reduction by polymers and surfactants because there are serious disadvantages of the drag reduction by them alone. In order to understand the synergistic effect of the drag reduction by polymers and surfactants, in‐depth investigations are performed on the drag reduction behavior by simultaneous addition of nonionic polymer poly(ethylene oxide) (PEO) and cationic surfactant cetyltrimethyl ammonium chloride (CTAC) in a two‐dimensional channel flow. The sodium salicylate (NaSal) is added to provide counter ions for promoting micelle formation. For comparisons, the drag‐reducing behaviors of PEO and CTAC/NaSal alone are also investigated. The present results show that the synergistic effect of the drag reduction depends upon concentration combination of PEO and CTAC/NaSal. The Reynolds number range with a high drag‐reducing rate becomes wider due to the simultaneous addition of PEO & CTAC/NaSal, whereas the ultimate drag reduction rate has a minimal change. The drag reduction enhancement is a complicated and nonlinear issue, and it seems that PEO and CTAC/NaSal play different roles in the drag reduction in different Reynolds number ranges.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
