| Title |
Drag Reduction Phenomena of Surfactant Turbulent Pipe Flows |
| Authors |
윤형기(Hyung-Kee Yoon) ; 신광호(Kwang-Ho Shin) ; 장기창(Ki-Chang Chang) ; 나호상(Ho-Sang Ra) ; 유성연( Seong-Yeon Yoo) |
| Keywords |
마찰감소 ; 계면활성제 ; 관내 유동 Drag reduction ; Surfactant ; Pipe flows |
| Abstract |
This is to characterize the fluid mechanics of surfactant water solutions, which exhibit drag reduction in the turbulent flow as compared to pure water. The emphasis is placed on those fluid characteristic aspects of drag reducing solutions which are relevant for application in closed circulation loops for the purpose of pumping power savings, like hydronic cooling and heating systems in buildings. The experiments are carried out with the solutions of the surfactant Beraid DR-IW 616 in concentration of 100∼3,000ppm.
The following key parameters are focused in this study: surfactant concentration, solution temperature and pipe diameter. |