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48,80 €ISBN 978-3-8440-5879-6Softcover156 pages67 figures230 g21 x 14,8 cmEnglishThesis
April 2018
New publication
Sven Pieper
Confinement Induced Segregation Effects in Suspension Rheology
The formation of a particle depleted and a structured particle layer adjacent to a confining surface is a well known effect in suspension rheology. This thesis aimed to provide insight into specific properties of these layers. Firstly, the influence of pressure on the depleted layer, which is the cause of apparent wall slip, should be quantified. A slit die was fitted with pressure transducers and an outlet restrictor. By performing experimental work as well as simulations, it was demonstrated that the pressure's influence is negligible. Secondly, a setup should be provided, which allows for the characterization of both depleted and structured layers with regard to various, independently variable, parameters. To this end, a parallel plate rheometer was modified for optical accessibility. Optical velocimetric and concentration determination methods were implemented. After carefully mapping the modification induced distortion of the velocity field, concentration profiles were obtained and analyzed. Especially the demonstrated vertical concentration gradient poses a new challenge for rheology.
Keywords: Rheology; Suspension; Segregation Effects
Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik
Edited by Prof. Dr.-Ing. Hans-Joachim Schmid, Paderborn
Volume 5
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The book <a href="https://www.shaker.eu/shop/978-3-8440-5879-6">Sven Pieper - Confinement Induced Segregation Effects in Suspension Rheology</a><br />(ISBN: 978-3-8440-5879-6) was published by <a href="https://www.shaker.eu">Shaker Verlag</a>.
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The book Sven Pieper - Confinement Induced Segregation Effects in Suspension Rheology
(ISBN: 978-3-8440-5879-6) was published by Shaker Verlag.
(ISBN: 978-3-8440-5879-6) was published by Shaker Verlag.
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The series <a href="https://www.shaker.eu/Series/588">Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik</a> is published by <a href="https://www.shaker.eu">Shaker Verlag</a>.
Result:
The series Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik
is published by Shaker Verlag.
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