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Drag Reduction Phenomena of Surfactant Turbulent Pipe Flows  

Yoon, Hyung-Kee (Korea Institute of Energy Research (KIER))
Shin, Kwang-Ho (Graduate School of Mechanical Design Engineering, Chungnam National University)
Chang, Ki-Chang (Korea Institute of Energy Research (KIER))
Ra, Ho-Sang (Korea Institute of Energy Research (KIER))
Yoo, Seong-Yeon (BK21 Mechatronics Group in Chungnam National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.12, 2006 , pp. 1025-1032 More about this Journal
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 $100{\sim}3,000ppm$. The following key parameters are focused in this study: surfactant concentration, solution temperature and pipe diameter.
Keywords
Drag reduction; Surfactant; Pipe flows;
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