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Directional Characteristics of Multisegment ED Probes under Apparent Wall-slip (AWS) Effect
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SYSNO ASEP 0313098 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Directional Characteristics of Multisegment ED Probes under Apparent Wall-slip (AWS) Effect Title Směrové charakteristiky vícesegmentových ED čidel pod vlivem zdánlivého skluzu při stěně Author(s) Wein, Ondřej (UCHP-M) RID, SAI Source Title Summaries 3, Hydrodynamic Processes. - Praha : Process Engineering Publisher, 2008 - ISBN 978-80-02-02050-9 Pages s. 921 Number of pages 1 s. Publication form CD ROM - CD ROM Action 18th International Congress of Chemical and Process Engineering CHISA 2008 Event date 24.08.2008-28.08.2008 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords apparent wall-slip ; a constant wall shear rate Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA104/08/0428 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) Annotation The direction-sensitive electrodiffusion (ED) probes consist of three working electrodes (segments), separated by thin insulated insertions. In common, the directional characteristics, ie. the ratios of individual limiting diffusion currents, are determined experimentally, using a suitable calibrator that generates a steady viscometric flow. It has been shown in that, at high enough Peclet number, the directional characteristics can be calculated from a front photograph of the probe via the linear theory of convective diffusion. In the present contribution, the original theory for a constant wall shear rate is generalized for a class of non-linear velocity profiles. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2009
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