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
Viscoelasticity of a surfactant and its drag-reducing ability
β Scribed by Myska, Jiri ;Zakin, Jacques L. ;Chara, Zdenek
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 678 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0003-6994
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π SIMILAR VOLUMES
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
Experiments were conducted to study the drag-reduction and heat transfer performances of a newly synthesized zwitterionic surfactant solution (oleyl trimethylaminimide) in a two-dimensional channel. For testing the drag-reduction at subzero temperatures, a 20% ethylene glycol aqueous solution (EG/W)
drag-reducing ability after a period of continuous circulation. The effect of various metal ions and compounds on the viscoelas-The effective time varied from a few days to tens of days, ticity of a 12.5/5 m M sodium salicylate (NaSal)/tris(2-hydroxydepending on the components present in the loop. T