the purpose of this study is numerical modeling of temperature variation of phases in a two phase regime in fluidized bed dryers including particles belonging to group d of geldart classification. the mass transfer between phases is not taken into consideration in this modeling which has been assumed in three- dimensional, unsteady, and two-phase regime.to verify the modeling we consider the do...

Recent experimental and theoretical results show that the collision pairs, O2⋅O2 and O2⋅N2, absorb a small but significant fraction of the globally incident, solar radiation (Pfeilsticker et al. 1997, Solomon et al. 1998, Mlawer et al. 1998). The contribution of the water vapor dimer to shortwave (SW) absorption, however, remains speculative due to uncertainties in both its abundance and its ab...

In view of the current status catalytic cracking flue gas treatment, it is necessary to study flow environment desulfurization ash particles, which are a type Geldart C particle, in circulating fluidized bed (CFB) for semi-dry desulphurization using CFB technology. This investigated characteristics particles riser with an inner diameter 70 mm and height 12.6 m, at velocity 4–7 m/s solids circul...

This study addresses the need to model bubble flow in a fluidized bed using probabilistic approach, which includes intrinsic randomness. It is shown that proposed predictive (PPM) overcomes limitations of deterministic correlations, commonly used describe dynamics high-density (above 2000 kg/m3) sand-beds Type B particles Geldart classification. proven PPM can relationship between axial chord a...

In this study, the multi-phase Eulerian–Eulerian two-fluid method (TFM) coupled with kinetic theory of granular flow (KTGF) was used to investigate hydrodynamics particle flows (Geldart Group B) in a lab-scale bubbling fluidized bed. The goal improve bubble behavior inside bed distribution an injected liquid, by increasing bubbles entering spray jet cavity and, thus, reduce formation wet agglom...

Now that the world has well and truly crossed the threshold to the 21st century, it seems timely to review the progress of lithospheric seismic imaging and comment on recent developments in the field. In the context of this special issue, lithospheric seismic imaging refers to any kind of seismic study that gives rise to multidimensional (2-D or 3-D) views of the Earth's interior, from the shal...