Pressure Loss, Heat Transfer Coefficient and Flow Pattern in Drag-Reducing Two-Phase Flow of Air and Surfactant Solution Inside a Vertical Tube
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- ARAGA Koichi
- Department of Mechanical Engineering, Kinki University Technical College
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- MURATA Keiji
- Department of Mechanical Engineering, Kinki University Technical College
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Description
Surfactant additives can greatly reduce the friction factors of a heat transfer medium flowing in a tube. This was because the generation or growth of turbulent vortices is suppressed by rod-like micelles in a surfactant solution. However, since they decrease the heat transfer coefficient, we investigated the heat transfer enhancement by gas-liquid two-phase flow, and the flow and heat transfer characteristics in gas-surfactant solution two-phase flows. Injecting air significantly enhanced the heat transfer coefficients because it destroyed rod-like micelles or caused surfactant additives to accumulate at the gas-liquid interface, decreasing the apparent micelle concentrations.
Journal
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- Journal of the Japanese Society for Experimental Mechanics
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Journal of the Japanese Society for Experimental Mechanics 8 (Special_Issue), s6-s11, 2008
The Japanese Society for Experimental Mechanics
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Keywords
Details 詳細情報について
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- CRID
- 1390282680166819840
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- NII Article ID
- 10021155932
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- NII Book ID
- AA11822914
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- ISSN
- 18844219
- 13464930
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- NDL BIB ID
- 9567836
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed