Solutions containing drag reducing additives also show reduced heat transfer which limits their use in district heating and cooling recirculation systems where heat exchange is critical. In this study, static mixers A and B and honeycombs were installed at the entrance to a heat exchanger to break t
Sans- and LS-studies on drag-reducing surfactant solutions
✍ Scribed by H.W. Bewersdorff; J. Dohmann; J. Langowski; P. Lindner; A. Maack; R. Oberthür; H. Thiel
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 312 KB
- Volume
- 156-157
- Category
- Article
- ISSN
- 0921-4526
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✦ Synopsis
SANS-measurements of dilute surfactant solutions containing rodlike micelles were performed under laminar and turbulent (drag-reduced) flow conditions in a pipe geometry. Experiments indicate that the increased local stresses in turbulent flow partially break up the micellar structure, leading to a broader length-distribution of the particles and a decrease of the average rod length.
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