Summary
The analysis of mass transfer from a small cylindrical wire or from a rotating disk in a dilute polymer solution by using an electrochemical technique is reported here. Steady state measurements showed a large decrease of the mass transfer rate with respect to the newtonian behaviour, starting from critical velocity values. This phenomenon was ascribed to the fast stretching of the polymer coils which occurs when the elongational gradient equals the reciprocal of the polymer relaxation time.
Fluctuations arise at the transition and result from an hydrodynamic instability induced by the viscosity increase during elongation.
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References
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© 1985 Springer, Berlin Heidelberg
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Ambari, A., Deslouis, C., Tribollet, B. (1985). Mass Transfer in Elongational Flows of Dilute Polymer Solutions. In: Gampert, B. (eds) The Influence of Polymer Additives on Velocity and Temperature Fields. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82632-0_34
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DOI: https://doi.org/10.1007/978-3-642-82632-0_34
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