• Aucun résultat trouvé

Time-resolved measurement of concentration fluctuations in a confined bubbly flow by LIF

N/A
N/A
Protected

Academic year: 2021

Partager "Time-resolved measurement of concentration fluctuations in a confined bubbly flow by LIF"

Copied!
10
0
0

Texte intégral

Loading

Figure

Fig. 1. Experimental set-up and instrumentation. The lighted volume is denoted by  the small cylinder (in green), the observation volume by large cylinder (in orange),  the field of view of the camera by the parallelepiped (in red)
Fig. 4. Comparison of the signals measured by the spectrometer (black) and by  imaging (gray)
Fig. 5. Impact of the presence of bubbles in the vicinity of the measurement volume on the measurement
Fig. 9. Illustration of the two timescales present in the concentration signal. Sig-  nal of concentration (black)
+4

Références

Documents relatifs

Thanks to this method, reliable measurements of concentration fluctuations within a confined bubble swarm have been obtained, and for the first time, PDFs and time spectra of

Keywords: concentration fluctuations, concentration PDF, turbulent boundary layer, atmospheric dispersion, plume meandering model, Lagrangian stochastic model,

The comparison between the simulation data and theoretical curves for structure factor and initial decay rate of a confined tethered membrane shows that the edge fluctuations can

It seems likely that in this range of excitation energy we begin to excite electrons into localized states and the function R(t) is altered measurably since relaxation begins from

In the left picture, fuzzy index F I equals to 0, Loan Measure ˜ κ E is represented at the top, in the middle the concentrated measure of ˜ κ E is computed with the partition of

First, it presents a statistical analysis of a bunch of realistic traffic measurements obtained from hundreds of cells in a large city to evaluate at what extent fluctuations

Nous interprétons dans cette thèse les anomalies hydrogeothermales en abordant les caractéristiques hydrogéochimiques, hydrogéologiques et géothermales dans un

coherent transport of single carriers such as electrons, excitons [ Sto05 ] or single phonons [ Gus12 ]. In 2011, an experiment carried out in our group by Hermelin et al. in