https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Bubbles in viscous liquids: time dependent behaviour and wake characteristics https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24590 Eo (=ΔρgD²/σ)≤641 and Re≤151. Additionally, results published in the literature encompassing bubbles with lower values of Eo numbers were also considered, such that the overall dependencies of bubble shape, wake characteristics, and drag coefficient over a large range of Eo and Re values can be identified. While it was found that the deformation of the bubbles as predicted through the numerical study can generally replicate experimental observations presented, several limitations were identified, such as in the representation of skirt formation behind a skirted bubble and the formation of satellite bubbles behind a bubble rising at high Reynolds numbers. The dependency of the bubble aspect ratio on the Weber and Morton numbers was confirmed for cases of spherical and ellipsoidal bubbles; whilst for spherical cap and skirted bubbles the aspect ratio was found to depend largely on the Reynolds and Capillary numbers, respectively. Finally, the expansion and formation of closed/open laminar wakes behind the rising bubble were analysed and was found to correlate well with the bubble Re and Eo numbers.]]> Thu 21 Oct 2021 12:53:06 AEDT ]]> Forces on a nearly spherical bubble rising in an inclined channel flow https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52494 Fri 13 Oct 2023 14:43:52 AEDT ]]>