Investigations of the Gas-Liquid Multiphase System Involving Macro-Instability in a Baffled Stirred Tank Reactor
Joint Authors
Zhang, Shuo
Talaga, Jan
Müller, David
Dylag, Michal
Wozny, Günter
Source
Journal of Control Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Electronic engineering
Information Technology and Computer Science
Abstract EN
Bubble Sauter Mean Diameter (SMD) in gas-liquid multiphase system is of particular interest and the quantification of gas characteristics is still a challenge today.
In this contribution, multiphase Computational Fluid Dynamic (CFD) simulations are combined with Population Balance Model (PBM) to investigate the bubble SMD in baffled stirred tank reactor (STR).
Hereby, special attention is given to the phenomenon known as the fluid macro-instability (MI), which is a large-scale low-frequency fluid velocity variation in baffled STRs, since the fluid MIs have a dominating influence on the bubble breakage and coalescence processes.
The simulations, regarding the fluid velocity, are validated with Laser Doppler Anemometry (LDA) experiments, in which the instant radial velocity is analyzed through Fast Fourier Transform (FFT) spectrum.
The frequency peaks of the fluid MIs are found both in the simulation and in the experiment with a high degree of accuracy.
After the validation, quantitative predictions of overall bubble SMD with and without MIs are carried out.
Due to the accurate prediction of the fluid field, the influence of the fluid MI to bubble SMD is presented.
This result provides more adequate information for engineers working in the field of estimating bubble SMDs in baffled STRs.
American Psychological Association (APA)
Zhang, Shuo& Talaga, Jan& Müller, David& Dylag, Michal& Wozny, Günter. 2016. Investigations of the Gas-Liquid Multiphase System Involving Macro-Instability in a Baffled Stirred Tank Reactor. Journal of Control Science and Engineering،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1107885
Modern Language Association (MLA)
Zhang, Shuo…[et al.]. Investigations of the Gas-Liquid Multiphase System Involving Macro-Instability in a Baffled Stirred Tank Reactor. Journal of Control Science and Engineering No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1107885
American Medical Association (AMA)
Zhang, Shuo& Talaga, Jan& Müller, David& Dylag, Michal& Wozny, Günter. Investigations of the Gas-Liquid Multiphase System Involving Macro-Instability in a Baffled Stirred Tank Reactor. Journal of Control Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1107885
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1107885