Počet záznamů: 1  

Flow simulations approach for flocculation tanks

  1. 1.
    SYSNO ASEP0585700
    Druh ASEPC - Konferenční příspěvek (mezinárodní konf.)
    Zařazení RIVD - Článek ve sborníku
    NázevFlow simulations approach for flocculation tanks
    Tvůrce(i) Idžakovičová, Kristýna (UH-J) RID, ORCID, SAI
    Bílek, Vojtěch (UH-J) ORCID, RID
    Haidl, Jan (UH-J) ORCID, RID, SAI
    Isoz, M. (CZ)
    Pivokonský, Martin (UH-J) SAI, ORCID, RID
    Zdroj.dok.Topical Problems of Fluid Mechanics. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2024 / Šimurda D. ; Bodnár T. - ISSN 2336-5781 - ISBN 978-80-87012-88-8
    Rozsah strans. 77-84
    Poč.str.8 s.
    Forma vydáníOnline - E
    AkceTopical Problems of Fluid Mechanics 2024
    Datum konání21.02.2024 - 23.02.2024
    Místo konáníPrague
    ZeměCZ - Česká republika
    Typ akceWRD
    Jazyk dok.eng - angličtina
    Země vyd.CZ - Česká republika
    Klíč. slovaflocculation tank ; stirring ; MRF ; CFD ; OpenFOAM
    Vědní obor RIVCI - Průmyslová chemie a chemické inženýrství
    Obor OECDChemical engineering (plants, products)
    Institucionální podporaUH-J - RVO:67985874
    UT WOS001242655400011
    DOI https://doi.org/10.14311/TPFM.2024.011
    AnotaceFlocculation in water treatment facilities plays a key role in the separation of colloidal inorganic and organic substances. Its optimization leads to a significant increase in its efficiency and savings of operational costs. However, it is currently based on trial-and-error experimental approaches. In this contribution, we focus on flow modeling in stirred flocculation tanks that would, after coupling with a calibrated model of particle aggregation, enable simulationbased flocculation optimization. Despite the abundance of literature on stirred tank modeling, there is no universal agreement on the methodology used to describe turbulence nor on the approach to the computational mesh creation. Consequently, there is no unified methodology for simulations and their validation. To address this, we present a best-practice methodology for economical, yet reliable flow simulations in the said device. This methodology includes the choice of the turbulence model, the approach to the design of a high quality mesh suitable for arbitrary geometries, and results evaluation. It is developed based on an extensive literature review, a multitude of flow simulations using several meshes of progressively higher quality and resolution, and various strategies to converge to steady-state flow conditions. The simulation quality indicators used here involve comparison with the experimental data on fluid velocity, stirrer power output, and flow rate through the impeller zone. Additionally, the resulting flow simulation models are compared using tracer transport simulations, hinting at their potential for coupling with particle aggregation models.
    PracovištěÚstav pro hydrodynamiku
    KontaktSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Rok sběru2025
Počet záznamů: 1  

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