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Vojtech Bares, Zdenek Chara, Yasushi Takeda
6th International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering (6 ISUD)

Appl. Rheol. 19:1 (2009) 46-47

Cite this publication as follows:
Bares V, Chara Z, Takeda Y: 6th International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering (6 ISUD), Appl. Rheol. 19 (2009) 46.

Vaclav Mik, Jiri Myska, Zdenek Chara, Petr Stern
Durability of a Drag Reducing Solution

Appl. Rheol. 18:1 (2008) 12421 (6 pages)

Effectiveness of drag reduction by small addition of a surfactant in the turbulent flow of water depends on the structure and concentration of the additive, temperature of the solution and turbulence intensity, possible flow disturbance by a mechanical obstacle and the content of ions in water, but also on the age of the surfactant solution.We show how important aging effects are in connection with total surfactant concentration, in particular how rheological parameters of the drag reducing solution change with time.

Cite this publication as follows:
Mik V, Myska J, Chara Z, Stern P: Durability of a Drag Reducing Solution, Appl. Rheol. 18 (2008) 12421.


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