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Apparent Wall Slip (AWS) Viscometry - Influence of the Sensor's Surface.
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SYSNO ASEP 0380062 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Apparent Wall Slip (AWS) Viscometry - Influence of the Sensor's Surface. Author(s) Pěnkavová, Věra (UCHP-M) RID, ORCID, SAI
Tihon, Jaroslav (UCHP-M) RID, ORCID, SAI
Večeř, M. (CZ)
Wein, Ondřej (UCHP-M) RID, SAISource Title Book of Abstracts, Volume 44. - - : -, 2012 - ISSN 1877-7058 - ISBN N Pages s. 36 Number of pages 1 s. Publication form flash disc - flash disc Action International Congress on Rheology /16./ Event date 05.08.2012-10.08.2012 VEvent location Lisbon Country PT - Portugal Event type WRD Language eng - English Country PT - Portugal Keywords AWS viscometry ; microdisperse liquids ; influence of sensor's surface Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GAP102/12/2043 GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 Annotation Apparent wall slip (AWS) can affect the flow of microdisperse liquids in narrow channels. This phenomenon is characterized by the Navier slip coefficient in addition to the fluidity. A series of measurements at a given wall shear stress and varying gap thickness is necessary to separate the slip and fluidity effect. Organizing such a complex viscometric experiment over a span of shear stresses is the task for AWS viscometry. In this experimental study, the four KK viscometric sensors with different surface quality and the special statistical software AWSWork are used to determine the slip coefficients of aqueous kaolin dispersions. All the dispersions display some extent of the AWS effect, which is more pronounced at low shear stresses. The sensor’s surface does play important role. The artificial surface roughness suppresses the AWS effect which is, however, still discernible. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2013
Number of the records: 1