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International Journal of Fluid Mechanics Research

Publication de 6  numéros par an

ISSN Imprimer: 2152-5102

ISSN En ligne: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Measurement of the Extensional Properties of Polyacrilamide Solutions Using the Falling Droplet Technique

Volume 24, Numéro 4-6, 1997, pp. 590-598
DOI: 10.1615/InterJFluidMechRes.v24.i4-6.150
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RÉSUMÉ

The falling droplet technique is used to determine the extensional properties of very dilute and semi-dilute polymeric solutions. Nine different aqueous solutions of Polyacrilamide E10 were tested spanning a wide range of polymer concentration. The extensional viscosity for all solutions was found to be orders of magnitude larger than the shear viscosity. The extensional viscosity increases rapidly with time after the start of stretching. It was also shown that there is a linear relationship between the stress and the strain in the fluid filament, indicating that the fluid behaves like an elastic solid. The modulus of elasticity of the fluid was found to increase rapidly at low polymer concentrations, up to 0.1%, with no subsequent increase at higher concentrations. The stretch rate was found to be a decreasing function of polymer concentration. The stretch rate determined from the measurement of filament diameter was found to be greater than that determined by measurement of filament length. The spread between the two experimentally determined stretch rates was found to decrease with polymer concentration. This discrepancy is due to the small forward flow from the filament into the droplets and the back flow from the filament into the filament attachment region due to capillary action.

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