000014904 001__ 14904
000014904 005__ 20161115100205.0
000014904 04107 $$aeng
000014904 046__ $$k2016-08-21
000014904 100__ $$aVidal, Valérie
000014904 24500 $$aGas-induced fluidization in water-saturated sands

000014904 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014904 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014904 506__ $$arestricted
000014904 520__ $$2eng$$aThe morphology and dynamics of gas crossing a liquid-saturated granular bed has a drastic importance in natural and industrial processes. Due to the repetitive rise of gas through the bed, a fluidized zone is formed, which exhibits a parabolic shape at long times for a single injection point. This work investigates the fluidization of a liquid-saturated sand submitted to an ascending gas flow, in confined geometry. First, we focus on the fluidization dynamics from the initial state of a loose-packing, homogeneous bed. The stabilization time of the central air channel which is always formed in the stationary state is quantified, and its scaling inferred from an energy balance. Second, we investigate the global characteristics of the gas trapped in the system, in the stationary state. In particular, we show that the gas volume fraction in the fluidized zone is independent of the injection flow-rate and the grain diameter.

000014904 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014904 653__ $$a

000014904 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014904 720__ $$aVidal, Valérie
000014904 8560_ $$ffischerc@itam.cas.cz
000014904 8564_ $$s168907$$uhttps://invenio.itam.cas.cz/record/14904/files/TS.FS08-2.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3355, code TS.FS08-2.02
.
000014904 962__ $$r13812
000014904 980__ $$aPAPER