“…Here, we are interested in the statistically steady state, which is independent of the initial bubble distribution. This was numerically verified in Cifani (2017) where two different initial arrays composed of the same number of bubbles were evolved in time until a statistically steady state. Both cases were found to yield the same flow statistics.…”
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“…Here, we are interested in the statistically steady state, which is independent of the initial bubble distribution. This was numerically verified in Cifani (2017) where two different initial arrays composed of the same number of bubbles were evolved in time until a statistically steady state. Both cases were found to yield the same flow statistics.…”
Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
“…The incompressible Navier-Stokes equations have been solved numerically by employing the massively parallel code detailed in Cifani (2017) and Cifani et al (2018). The latter has been designed to efficiently handle up to O(10 4 ) fully deformable bubbles in wall-bounded turbulence.…”
Section: Numerical Methods and Computational Set-upmentioning
confidence: 99%
“…This guarantees sharpness of the volume fraction field and a mass loss within a fraction of a percentage (Cifani et al 2016). The multi-marker formulation applied here (Cifani 2017;Cifani et al 2018) assigns a separate volume fraction field (of limited size, only in the vicinity of the considered bubble) to each bubble to avoid spurious numerical bubble coalescence which would frequently occur for the single-marker formulation. For the bubble size and fluid properties investigated in this work, characterized by the Weber/Eötvös number, physical bubble coalescence is assumed to be very unlikely.…”
Section: Numerical Methods and Computational Set-upmentioning
confidence: 99%
“…The VOF method has been chosen for this study due to its inherent volume conservation property and ability to deal with strong interface deformations as well as topological changes (although breakup does not occur for the bubble regime considered here). The issue of spurious numerical bubble coalescence has been avoided by a novel multi-marker geometrical VOF method (Cifani 2017;Cifani, Kuerten & Geurts 2018).…”
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