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This publication completes the model of the evolution of the transversal concentration profile proposed in the last paper, with a development of parametric models concerning the length of diffusion plume and the characteristic exponent ( R ≈ 40000). [ABSTRACT FROM AUTHOR]

This paper presents a model for the evolution of a transversal concentration profile of a macromolecular solution (PEO) injected into a cylindrical pipe at turbulent flow conditions ( R ≈ 40000). This model, based on the diffusion of a scalar quantity emitted by two diametrically opposed point sinks, proves to be in good agreement with the experimental data. [ABSTRACT FROM AUTHOR]

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Copyright of Rheologica Acta is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)