Quantifying microbubble clustering in turbulent flow from single-point measurements

Simple item page
dc.creatorCalzavarini, Enrico
dc.creatorBerg, Thomas H. van den
dc.creatorToschi, Federico
dc.creatorLohse, Detlef
dc.date2006-07-27
dc.date2008-01-26
dc.date.accessioned2026-07-07T09:36:07Z
dc.date.available2026-07-07T09:36:07Z
dc.descriptionSingle-point hot-wire measurements in the bulk of a turbulent channel have been performed in order to detect and quantify the phenomenon of preferential bubble accumulation. We show that statistical analysis of the bubble-probe colliding-times series can give a robust method for investigation of clustering in the bulk regions of a turbulent flow where, due to the opacity of the flow, no imaging technique can be employed. We demonstrate that micro-bubbles (radius R_0 ~ 0.1 mm) in a developed turbulent flow, where the Kolmogorov length-scale is, eta ~ R_0, display preferential concentration in small scale structures with a typical statistical signature ranging from the dissipative range, O(eta), up to the low inertial range, O(100 eta). A comparison with Eulerian-Lagrangian numeri- cal simulations is also presented to further support our proposed way to characterize clustering from temporal time series at a fixed position.
dc.description7 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/physics/0607255
dc.identifierhttp://arxiv.org/abs/physics/0607255
dc.identifierPhys. Fluids 20, 040702 (2008)
dc.identifierdoi:10.1063/1.2911036
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/160059
dc.subjectFluid Dynamics
dc.subjectChaotic Dynamics
dc.titleQuantifying microbubble clustering in turbulent flow from single-point measurements
dc.typetext

Files

Collections

arXiv