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Hamidreza Sanaeepur

Hamidreza Sanaeepur

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0003-3255-9696
Education: PhD.
ScopusId: 36129742900
Faculty: Engineering
Address: Arak University
Phone: 086-32625410

Research

Title
Computational fluid dynamics simulation of bubble coalescence and breakup in an internal airlift reactor: Analysis of effects of a draft tube on hydrodynamics and mass transfer
Type
JournalPaper
Keywords
Mathematical modeling Airlift reactor Coalescence and break-up Draft tube Mass transfer intensification
Year
2015
Journal Applied Mathematical Modelling
DOI
Researchers Abtin Ebadi Amooghin ، Somaye Jafari ، Hamidreza Sanaeepur ، Ali Kargari

Abstract

Two-dimensional computational fluid dynamics (CFD) simulations of internal airlift reactors were considered to predict hydrodynamic and mass transfer in unsteady state flow. The main aim of this work is to provide insight into the effect of a draft tube on the air– water reactor mass transfer and hydrodynamics. A complex mathematical model was used to investigate the coalescence and breakup towards a more precise simulation of airlift reactors. The effect of the draft tube was considered in terms of coalescence and breakup to evaluate the reactor performance. The simulation results reveal that the presence of a draft tube in an airlift reactor results in a significant enhancement of the gas–liquid mass transfer rate, and a reduction in average liquid velocity and gas holdup. The coalescence and break-up affected the results significantly. The CFD predictions also confirmed that there was reasonable conformity between the predicted model values and the experimental data.