Počet záznamů: 1
Single Rising Bubble – COMSOL and Fluent Comparison.
- 1.
SYSNO ASEP 0521854 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Single Rising Bubble – COMSOL and Fluent Comparison. Tvůrce(i) Crha, Jakub (UCHP-M) RID, ORCID, SAI
Basařová, P.
Růžička, Marek (UCHP-M) RID, ORCID, SAIZdroj.dok. Book of Abstracts. - - : -, 2019 - ISBN N Poč.str. 1 s. Forma vydání Online - E Akce Multiphase Flow Workshop - Conference and Short Course /17./ Datum konání 11.11.2019 - 15.11.2019 Místo konání Dresden Země DE - Německo Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova bubble ; CFD ; multiphase Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical engineering (plants, products) CEP GA19-09518S GA ČR - Grantová agentura ČR Institucionální podpora UCHP-M - RVO:67985858 Anotace The aim of this study is to determine the terminal velocities of a single spherical bubble rising in stagnant pure liquid using different commercial CFD solvers. A case of a single rising bubble serves as a benchmark case to compare the accuracy of different CFD solvers before creating simulations of more complex phenomena. In this study, two commercial solvers were used: COMSOL Multiphysics 5.3 and Ansys Fluent. A 2D axisymmetric simulation of an air bubble (diameter 0.6, 0.8 and 1.5 mm) rising in pure water or in pure propanol was created. Simulation using COMSOL gave better results than simulations in Ansys Fluent. Terminal velocities for 0.6 and 0.8 mm bubbles obtained using COMSOL corresponded very well with theoretical and experimental velocities. The terminal velocity of the largest bubble from COMSOL simulation was underestimated, as the bubble deformation differed from the experimental and theoretical value. Results from Fluent simulation for bubbles of 0.6 and 0.8 mm diameters were not obtained, as the simulation failed due to so-called parasitic currents which occurred during the simulation. Shape deformation and terminal velocity of 1.5 mm bubble obtained from Fluent were underestimated. The results of the simulations are shown in Figure 1. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2020
Počet záznamů: 1