Asiagbe, KS, Fairweather, M, Njobuenwu, DO orcid.org/0000-0001-6606-1912 et al. (1 more author) (2016) Multiscale Simulation of Bubbly Flows. In: Kravanja, Z and Bogataj, M, (eds.) Computer Aided Chemical Engineering. 26th European Symposium on Computer Aided Processes Engineering, 12-15 Jun 2016, Portorož, Slovenia. Elsevier , pp. 625-630.
Abstract
Large eddy simulation coupled with a Lagrangian bubble tracker is used to investigate the dynamics of a liquid containing microbubbles in a turbulent, horizontal channel flow. Such flows are relevant in a number of engineering and environmental applications, including bubble columns, gas-liquid reactors, fluidised beds and fluid transfer in pipelines. Sub-grid scale stresses are parameterised using a dynamic model, with the microbubbles assumed to be spherical and non-deformable, and subject to drag, lift, gravity, buoyancy, added mass and pressure gradient forces. The bubbles are also momentum-coupled with the carrier fluid. A channel flow of water at a shear Reynolds number, Reτ = 150, and bubble diameter, d = 80 μm, is considered. Results are consistent with those from previous direct numerical simulations, and demonstrate bubble migration towards the upper channel wall with time due to buoyancy effects, and the associated impact on the flow velocity and bubble concentration distribution.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Editors: |
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Keywords: | large eddy simulation; microbubbles; channel |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Oct 2016 10:14 |
Last Modified: | 04 Nov 2016 04:25 |
Published Version: | http://dx.doi.org/10.1016/B978-0-444-63428-3.50109... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/B978-0-444-63428-3.50109-0 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105547 |