Experimental Evidence of Apparent Wall Slip Effect on Viscometers of Different Surface Quality

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F10%3A86076460" target="_blank" >RIV/61989100:27360/10:86076460 - 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
Experimental Evidence of Apparent Wall Slip Effect on Viscometers of Different Surface Quality
Original language description
Aqueous polymer solutions commonly display both non-Newtonian bulk rheological behavior and apparent slip at liquid-solid interfaces (AWS effect). The AWS effect becomes important when transport characteristics are experimentally determined in measuringinstruments with small hydraulic radii, e.g. in extremely narrow channels, commonly encountered also in micro-reactors, membrane and similar processes. The AWS effect is an interfacial phenomenological property and, hence, it can depend on the bulk material of the confining walls and on the surface finishing, as well. The proposed paper is focused on experimental viscometric study of AWS effect of aqueous polymer solutions: 1.5% wt solution of Na salt of Carboxymethylcellulose, 0.4%wt of Welan Gum and 1% wt of Polyacrylamide was chosen as the tested liquids. Four viscometric sensors (type KK) with different quality of surface (Stainless steel,Titanium, Alloy of Al and Mg,as well as Stainless steel with surface roughened by sandblasting)
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
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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