[PDF] Top 20 Preferential accumulation of bubbles in Couette-Taylor flow patterns

... selection of the flow pattern is controlled by a centrifugal instability of the purely azimuthal Couette flow, and toroidal steady vortices 共Taylor vortex flow 兲 occur ... Voir le document complet

... periodicity of the flow. A detailed characterization of the vortices is performed for the single-phase ...develops bubbles tracking in a meridian plane and viscous torque of the ... Voir le document complet

... DISPERION IN A TURBULENT FLOW When Re is further increased, small scale flow structures feed the coherent structures (see ...invariance in simulations has been achieved when herringbone-like ... Voir le document complet

... mixture of 65% glycerol, and for the Re and Reg ranges of the present study, the flow is a composite patterns flow, composed of wavy basic ...mixture of 65% glycerol, ... Voir le document complet

... statistics of the flow are discussed using two different averaging proce- dures that permit to characterize the mean azimuthal velocity, the Taylor vortices contribution and the small-scale turbulent ... Voir le document complet

... variety of application, from industrial process engineering to environmental ...aim of our study is to focus on the interaction of a dispersed phase composed of microbubbles and a turbulent ... Voir le document complet

... accumulation in outflow regions near the inner ...This accumulation is evident for large bubbles (St ≈ 10 −1 and R b /δ* ≈ ...influence of these three contributions shows that, for ... Voir le document complet

... dispersion in turbulent Taylor-Couette flow. The aim of this study is to describe the main mechanisms yielding preferential bubble accumulation in near-wall ... Voir le document complet

... The bubbles accumulation in the flow has a direct influence on the liquid flow ...measurements, bubbles trapping inside the Taylor vortices can lead to a decrease ... Voir le document complet

... characteristic of further flow transitions are summarized in Tables 3 and 4 . In order to fully characterize the different wavy regimes, a spectral analysis of the image sequences is ...lines ... Voir le document complet

... force of the Taylor vortices and the centripetal force due to the inner cylinder rotational velocity makes it possible to characterise the radial accumulation of the ...value of ... Voir le document complet

... The bubbles accumulation in the flow has a direct influence on the liquid flow ...measurements, bubbles trapping inside the Taylor vortices can lead to a decrease ... Voir le document complet

... change in the second instability’s wave ...regime of the Couette Taylor ...localization in the gap rather than on the flow regime? To furnish some elements of response and ... Voir le document complet

... variety of application, from industrial process engineering to environmental ...aim of our study is to focus on the interaction of a dispersed phase composed of microbubbles and a turbulent ... Voir le document complet

... features in a bubbly Taylor-Couette flow when bubbles are arranged as elevated toroidal ...recorded in the front view plane with a high speed camera for a Reynolds number of 1500 ... Voir le document complet

... Bubbly Taylor-Couette · Flow visualization · Algorithm · Discrimination 1 Introduction In the context of naval hydrodynarnics, injecting bubbles into the developing boundary ... Voir le document complet

... also in agreement with the literature ( Takeda et ...characteristic of further flow transitions are summarized in Tables 3 and 4 .... In order to fully characterize the different wavy ... Voir le document complet

... characterization of tracer mixing in the Taylor-Couette flow configura- ...ment of mixing efficiency by solid particles with various sizes and volume ...ratio of the ... Voir le document complet

... 3.3. Residence Time Distribution measurements (global mixing) A spectroscopic method was used to perform RTD measure- ments of an inert dye. This method has several advantages, as compared to the electro-chemical ... Voir le document complet

... Science Arts & Métiers (SAM) is an open access repository that collects the work of Arts et Métiers Institute of Technology researchers and makes it freely available over the web where possible. This ... Voir le document complet