0195703 - UH-J 940032 RIV DE eng J - Journal Article
Chára, Zdeněk - Zakin, J. L. - Severa, Miroslav - Myška, Jiří
Turbulence Measurements of Drag Reducing Surfactant Systems.
Experiments in Fluids. Roč. 16, č. 1 (1993), s. 36-41. ISSN 0723-4864. E-ISSN 1432-1114
R&D Projects: GA ČR GA103/93/1050
Impact factor: 0.605, year: 1993
Result website:
https://link.springer.com/article/10.1007/BF00188503DOI: https://doi.org/10.1007/BF00188503

LDA measurements were made of mean velocity and of turbulence intensity in a 39.4 mm diameter tube, the first measurements in three directions on drag reducing surfactant solutions (0.05% and 0.1% Habon G). Drag reduction exceeded the predictions of the Virk maximum drag reduction asymptote and elastic sublayer mean velocity profiles are steeper than the profile proposed by Virk for maximum drag reducing asymptote solutions. Axial turbulence intensities for Habon G solutions are higher than those for water near the wall, lower in most of the outer region and about the same at the center. Tangential and radial turbulence intensities are lower than those for water.
Permanent Link: http://hdl.handle.net/11104/0091366