Abstract
Spheres and bubbles moving in non-Newtonian liquids are known to show several interesting phenomena. For example Hassager [1] found that the liquid velocity behind the bubbles rising in a non-Newtonian liquid is in the downward direction away from the rising bubble. This phenomenon was called the “Negative wake”. Sigh and Coutanceau [2] reported the existence of a negative wake behind spheres moving in a non-Newtonian liquid, by using a visualization technique with tracer particles.
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References
Hassager, O., Nature 279, No. 5712, pp. 402 — 403 (1979).
Sigli, O., M. Coutanceau, J. Non-Newtonian Fluid Mech. 2, 1 — 21 (1977).
Hassager, O., C. Bisgaard, Rheol. Acta 21, 534–536 (1982).
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Bisgaard, C., Hassager, O. (1982). An experimental investigation of velocity fields around spheres and bubbles moving in non-Newtonian liquids. In: Giesekus, H., Kirschke, K., Schurz, J. (eds) Progress and Trends in Rheology. Steinkopff, Heidelberg. https://doi.org/10.1007/978-3-662-12809-1_49
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DOI: https://doi.org/10.1007/978-3-662-12809-1_49
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