Electrochemical and optical studies of a stable to unstable transition in a polymer solution flowing close to a rotating disc |
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| Authors: | C Deslouis B Tribollet R Cressely R Hocquart |
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| Institution: | (1) Groupe de recherche n° 4 du CNRS  Physique de Liquides et Electrochimie , Université Pierre et Marie Curie, 4 place Jussieu, F-75230 Paris Cedex 05, France;(2) Laboratoire d'Optique Moléculaire, Ile du Saulcy, F-57000 Metz, France |
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| Abstract: | Summary A transition has been displayed in a concentrated solution of a linear chain polymer flowing close to a rotating disk. For a critical angular speed of rotation, a discontinuity of the mass transfer rate by diffusion and convection, as well as the existence of flow birefringence are observed. This transition is interpreted as an effect of conformational change (coiled to stretched shape) of the polymer under the local strain in the fluid.With 4 figures |
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| Keywords: | Polymer solution rotating disc flow birefringence mass transfer elongational flow |
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