Počet záznamů: 1
Numerical simulations and validation of single- and two-phase flow in a stirred lab-scale photobioreactor
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SYSNO ASEP 0572629 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Numerical simulations and validation of single- and two-phase flow in a stirred lab-scale photobioreactor Tvůrce(i) Rebej, M. (CZ)
Juřena, T. (CZ)
Vondál, J. (CZ)
Fuente Herraiz, D. (ES)
Červený, Jan (UEK-B) RID, ORCID, SAI
Jegla, Z. (CZ)Zdroj.dok. Biosystems Engineering. - : Elsevier - ISSN 1537-5110
Roč. 230, JUN (2023), s. 35-50Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova cfd ; multiphase flow ; photobioreactor ; PIV validation ; shear stress ; agitation Vědní obor RIV IN - Informatika Obor OECD Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8) CEP EF16_026/0008413 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CzeCOS IV - 90248 - Ústav výzkumu globální změny AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora UEK-B - RVO:86652079 UT WOS 000986535700001 EID SCOPUS 85153043191 DOI 10.1016/j.biosystemseng.2023.04.004 Anotace A particle image velocimetry (PIV) technique was used to measure velocity fields of single- and multi-phase fluid flow in a stirred, flat-panel photobioreactor and to validate the computational fluid dynamics (CFD) model. The paper presents the grid independence study, velocity profiles, and shear stresses that were studied under four different operating conditions, i.e. two different agitation speeds, 360 rpm, and 480 rpm, and with or without aeration of 200 ml min(-1). The single-phase numerical model showed a correlation in the improved accuracy, and the mesh refinement, even though using a very fine mesh, did not justify the increased computational costs, making a medium mesh more practical. Similarly, the two-phase flow analyses showed a good qualitative agreement with the PIV data. However, PIV measurement in bubbly flows is a challenging task, possibly having large uncertainties due to light effects at the gaseliquid interface. Nevertheless, the large vortex formed near the rotating magnetic stirrer was found to dominate the flow pattern in both, single- and multi-phase, simulations. The effect of the aeration on shear stresses was, naturally, more noticeable with lower agitation speeds. However, with both agitation speeds, the highest shear stresses around the stir bar were found to quickly decay. Thus, the environment in the photobioreactor can be considered appropriate for the cultivation of microalgae. (c) 2023 IAgrE. Published by Elsevier Ltd. All rights reserved. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2024 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S153751102300079X?via%3Dihub
Počet záznamů: 1