Weissenberg effect

In fluid dynamics, the Weissenberg effect is a phenomenon that occurs when a spinning rod is inserted into a solution of elastic liquid. Instead of being thrown outward, the solution is drawn towards the rod and rises up around it.^[1] This is a direct consequence of the normal stress that acts like a hoop stress around the rod. The effect is a common example of non-Newtonian fluid dynamics, which has been shown to occur for polystyrene.^[2] The effect is named after Karl Weissenberg who published about it in 1947.^[3]

References

^ "Research".
^ "Article on the Weissenberg effect by Non-Newtonian Fluid Dynamics Group at the Massachusetts Institute of Technology".
^ Weissenberg, K. (1947-03-01). "A Continuum Theory of Rhelogical Phenomena". Nature. 159 (4035): 310–311. doi:10.1038/159310a0. ISSN 1476-4687.

External links

The Isolation of, and the Initial Measurements of the Weissenberg Effect

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[1] "Research".

[2] "Article on the Weissenberg effect by Non-Newtonian Fluid Dynamics Group at the Massachusetts Institute of Technology".

[3] Weissenberg, K. (1947-03-01). "A Continuum Theory of Rhelogical Phenomena". Nature. 159 (4035): 310–311. doi:10.1038/159310a0. ISSN 1476-4687.

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v t e Non-Newtonian fluids
Effects	Barus Self-siphoning Kaye Toms Weissenberg
Properties	Viscoelastic materials Kelvin–Voigt Maxwell Time-dependent viscosity Rheopecty Thixotropy Non-Newtonian viscoelasticity Shear thinning Shear thickening
Generalized Newtonian fluids	Bingham Carreau Cross Herschel–Bulkley Newtonian Ideal Power-law