Experiments for heat transfer and friction drag of turbulent water flow with surfactant have been conducted to investigate the relations between heat transfer and drag reduction and coherent fine scale eddies in near-wall turbulence. Experiments were conducted for several different concentrations of surfactant solution and for several pipes (4m long) with different diameters. In the case of high concentration conditions (500 and 750ppm), the range of drag reduction without heat exchange, increases with the increase of temperature for low temperature region (< 313K), which is irrespective of the concentration. On the other hand, in high temperature region (> 313K), the drag reduction range depend on the concentration, and higher concentration leads to larger drag reduction range. The time scale of coherent fine scale eddies well characterizes the range of heat transfer and drag reduction, simultaneously. As the fluid near the wall is cooled in the heat exchanging process, the heat transfer reduction range is suppressed for the high temperature and high concentration conditions.
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ASME/JSME 2007 5th Joint Fluids Engineering Conference
July 30–August 2, 2007
San Diego, California, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4288-6
PROCEEDINGS PAPER
Heat Transfer Estimation of Turbulent Flow With Surfactant Base on the Coherent Fine Scale Eddy Available to Purchase
H. Okada,
H. Okada
Tokyo Institute of Technology, Tokyo, Japan
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M. Tanahashi,
M. Tanahashi
Tokyo Institute of Technology, Tokyo, Japan
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T. Miyauchi
T. Miyauchi
Tokyo Institute of Technology, Tokyo, Japan
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H. Okada
Tokyo Institute of Technology, Tokyo, Japan
M. Tanahashi
Tokyo Institute of Technology, Tokyo, Japan
T. Miyauchi
Tokyo Institute of Technology, Tokyo, Japan
Paper No:
FEDSM2007-37242, pp. 291-298; 8 pages
Published Online:
March 30, 2009
Citation
Okada, H, Tanahashi, M, & Miyauchi, T. "Heat Transfer Estimation of Turbulent Flow With Surfactant Base on the Coherent Fine Scale Eddy." Proceedings of the ASME/JSME 2007 5th Joint Fluids Engineering Conference. Volume 1: Symposia, Parts A and B. San Diego, California, USA. July 30–August 2, 2007. pp. 291-298. ASME. https://doi.org/10.1115/FEDSM2007-37242
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