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Determination of rheological data from mixing experiments

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F14%3A00221280" target="_blank" >RIV/68407700:21220/14:00221280 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determination of rheological data from mixing experiments

  • Original language description

    Sludge suspensions and highly concentrated fine-grained suspensions behave mostly like non-Newtonian power law liquids. When designing mixing equipment for suspensions of this kind, the Metzner - Otto concept is often used for calculating the power consumption required for mixing. In this paper, the concept is used for describing the flow behaviour of several types of sludge. Rheological experiments were carried out in a vessel mixed using a curved blade turbine or alternatively an anchor agitator. Thesludge exhibited strongly non-Newtonian behaviour corresponding to the power-law model with the flow index in the range from 0.07 to 0.22 and the coefficient of consistency in the range from 2 to 84 Pa.s^m. The Metzner - Otto constant of the anchor agitator obtained from the literature has been validated for suspensions having such a low flow index. Our work has also proved that sludges can be substituted by model sawdust suspensions, thus facilitating experimental work.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JP - Industrial processes and processing

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/TA02010243" target="_blank" >TA02010243: Mixing Equipment for Sludge Processing</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2014

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    20th International Conference of Process Engineering and Chemical Plant Design - Conference Proceedings

  • ISBN

    978-3-00-047364-7

  • ISSN

  • e-ISSN

  • Number of pages

    12

  • Pages from-to

    211-222

  • Publisher name

    Technische Universität

  • Place of publication

    Berlin

  • Event location

    Berlín

  • Event date

    Oct 15, 2014

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article