Electrodiffusion Diagnostics of Apparent Wall Slip in Polymer Solutions.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F09%3A00022433" target="_blank" >RIV/61989100:27360/09:00022433 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Electrodiffusion Diagnostics of Apparent Wall Slip in Polymer Solutions.
Original language description
Both the thermal anemometry [1] and electrodiffusion diagnostics [2], [3] were before now used to measuring near-to-wall velocity profile. These results were rather qualitative because of high uncertainties, both in used experimental technique and interpreting theory. Improvements of the mentioned electrodiffusion method consist in: (i) relating the mass-transfer coefficients to well-specified points on the velocity profile, (ii ) simultaneous using a set of circular probes of diameters ranging from 0.2to 2.0 mm, (iii) improving theory by solving full 3D equation of convective diffusion [4], (iv) careful manufacture and calibration of the circular ED probes [4], and (v) using the potentiostatic transients to independent determination [4] of the diffusivities. According to calibration experiments with Newtonian liquids, inaccuracies of the determined velocity profiles are below 10% in both variables. Using this method, some data, over a range of shear stresses, were obtained about the
Czech name
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Czech description
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Project
<a href="/en/project/GA104%2F09%2F0972" target="_blank" >GA104/09/0972: Wall effects in flowing microdispersion liquids: apparent slip and electrokinetic potential</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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