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Influence of spontaneous percolation on apparent mass at the bottom of a Janssen granular column

Chand, Ram; Ali Khaskheli, Murad; Qadir, Abdul; … - In: Physica A: Statistical Mechanics and its Applications 393 (2014) C, pp. 96-100

The effect of spontaneous percolation on apparent mass at the bottom of granular assemblies has been investigated experimentally. Bi-layered arrangements of two types of granules which differ in size are poured in a vertical silo. In this configuration, the smaller grains are layered at the top...

Persistent link: https://www.econbiz.de/10010873463

Stress fluctuations in monodisperse and bidisperse rapid granular shear flows

Jalali, Payman; Ritvanen, Jouni; Sarkomaa, Pertti - In: Physica A: Statistical Mechanics and its Applications 369 (2006) 2, pp. 535-544

Local stress fluctuations are measured in annular rapid shear flows of granular medium made of steel spheres with 2 and 3mm in diameter. Both monodisperse packing and bidisperse packing are investigated to reveal the influence of size diversity on intermittent features of granular materials....

Persistent link: https://www.econbiz.de/10010874065

Variational model of granular flow in a three-dimensional rotating container

Elperin, T.; Vikhansky, A. - In: Physica A: Statistical Mechanics and its Applications 303 (2002) 1, pp. 48-56

We considered a flow of a cohesionless granular material in a partially filled three-dimensional rotating container. A variational continuum mechanics model is suggested to describe the profile of the free surface of the granular material. A combination of a level set method and a variational...

Persistent link: https://www.econbiz.de/10010874410

Analysis of intensification of zeolite drying on a vibrating conveyor dryer with infrared emitters

Kushniruk, Vitalii; Novokhat, Oleh - In: Technology audit and production reserves 2 (2023) 1/70, pp. 6-9

Persistent link: https://www.econbiz.de/10014388629

Inhomogeneous cooling in inelastic granular fluids

Das, Subir K.; Puri, Sanjay - In: Physica A: Statistical Mechanics and its Applications 318 (2003) 1, pp. 55-62

We present results from a granular dynamics study of the nonequilibrium behavior of a freely evolving inelastic granular gas. The velocity and density fields exhibit complex pattern formation, which is reminiscent of phase-ordering systems. At early times, the density field stays approximately...

Persistent link: https://www.econbiz.de/10010589878

Fluctuations in apparent mass at the bottom of granular columns due to different arrangements

Chand, Ram; Shi, Qingfan; Qadir, Abdul; Ma, Shaopeng; … - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 10, pp. 2936-2939

We report the fluctuations in apparent mass at the bottom of granular columns due to various configurations. It is found that the fluctuations decrease with the increase in the ratio of diameters of silo to grain. For the arrangement of different grain layers in a column, the higher fluctuations...

Persistent link: https://www.econbiz.de/10010590964

The morphology of dunes

Herrmann, H.J.; Sauermann, G.; Schwämmle, V. - In: Physica A: Statistical Mechanics and its Applications 358 (2005) 1, pp. 30-38

The motion of dunes and their morphology is a fascinating, largely unexplored subject. Already the barchan, the simplest moving dune, poses many questions. We will present some results of field measurements on desert and costal dunes. Then we will present a model which consists of three coupled...

Persistent link: https://www.econbiz.de/10011063063

STABILITY AND DYNAMICS OF SPATIO-TEMPORAL STRUCTURES

Hermann Riecke - 2009

driven far from thermodynamic equilibrium. A classic example of such a system is thermally driven convection in a horizontal …-mixture convection, (2) explanation of the localized waves in electroconvection, (3) introduction of a new diagnostics for spatially and … driven convection in rotating systems. Additional contributions provided insight into the localization mechanism for …

Persistent link: https://www.econbiz.de/10009436261

Convection and radiation as important metropolitan functions in a penitential system

Odlanicka-Poczobutt, Monika; Semrau, Jakub - In: European research studies 25 (2022) 1, pp. 64-74

Persistent link: https://www.econbiz.de/10012807177

Corrective measures in turbulent pipe flows and extended self-similarity

Johansen, M.; Alstrom, P.; Borg, J.; Levinsen, M. - In: The European Physical Journal B - Condensed Matter and … 11 (1999) 4, pp. 665-676

Significant statistical bias in LDA measurements and how to adequately deal with it is a subtle problem when dealing with turbulent flows. In order to attempt a clarification we have performed measurements on a non-standard “grid experiment” where a clear bias effect is found. We have...

Persistent link: https://www.econbiz.de/10010992655