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VONDÁL, J. HÁJEK, J. DOHNAL, M.
Original Title
Numerical study of stirred tank with multiphase system
Type
conference paper
Language
English
Original Abstract
The present work aims to develop a modelling approach for the simulation of multiphase stirred tank with floating particles, suitable for up-scaling studies. Multiphase numerical modeling is used for predicting velocity profiles in stirred liquid. Free surface is evaluated from gas-liquid phase interaction. Transient time is incorporated in simulation. Entire simulation is run in this mode. It includes impeller start-up phase from zero to the full speed. The methodology is demonstrated on a case of published stirred tank design previously analyzed by experimental methods. Scale-up of stirred tanks is a frequently faced problem, which is difficult in cases of multiphase systems, especially with floating particles. The methodology presented in this work is directly applicable in practical problems concerning the scale-up of such complex multiphase systems. Free surface effect on velocity profile and on drawn-down location of solids is presented. This is usually omitted and simplified as a flat surface.
Keywords
CFD; stirred tank; multiphase; simulation; mixing
Authors
VONDÁL, J.; HÁJEK, J.; DOHNAL, M.
RIV year
2015
Released
1. 10. 2015
Publisher
Aidic Servizi Srl
Location
Milano, Italy
ISBN
978-88-95608-36-5
Book
Proceedings of the 18th International Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES 2015)
2283-9216
Periodical
Chemical Engineering Transactions
Year of study
45
State
Republic of Italy
Pages from
1051
Pages to
1056
Pages count
6
BibTex
@inproceedings{BUT117250, author="Jiří {Vondál} and Jiří {Hájek} and Miloslav {Dohnal}", title="Numerical study of stirred tank with multiphase system", booktitle="Proceedings of the 18th International Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES 2015)", year="2015", journal="Chemical Engineering Transactions", volume="45", pages="1051--1056", publisher="Aidic Servizi Srl", address="Milano, Italy", doi="10.3303/CET1545176", isbn="978-88-95608-36-5", issn="2283-9216" }