Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationEvaluation of Hydrodynamic Closures for Bubbly Regime CFD Simulations in Developing Pipe Flow
Shiea, M.; Buffo, A.; Baglietto, E.; Lucas, D.; Vanni, M.; Marchisio, D.
Abstract
The effect of interfacial forces and relevant closures, particularly the lift and wall lubrication forces, on the predictions of Eulerian-Eulerian computational fluid dynamics simulations of bubbly flows was studied. The test case under study was a developing turbulent bubbly pipe flow, simulated by using OpenFOAM. The results show that the geometric approach to consider the wall effect leads to better agreement than a standard relation assuming asymmetric drainage around the bubble near the wall. Furthermore, the results verify the need for employing negative lift coefficients in cases with large bubbles. A sensitivity analysis on the lift coefficient highlighted the importance of investigating spatially developing flows to draw general conclusions on the applicability of closure relations.
Keywords: Bubbly Flow; Two-fluid Model; Interfacial Forces; Lift Coefficient; Wall Lubrication Force
Involved research facilities
- TOPFLOW Facility
-
Chemical Engineering & Technology 42(2019), 1618-1626
DOI: 10.1002/ceat.201900116
Cited 8 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-27669
Years: 2023 2022 2021 2020 2019 2018 2017 2016 2015