Three mixtures were considered: (i) a binary mixture with particles of different sizes (dave) but same material density (ρs), (ii) a binary mixture with particles of different material densities (ρs) but same size (dave), and (iii) a continuous particle size distribution (PSD).
A general equation is proposed for predicting the minimum fluidisation velocity of a mixture of particles of various sizes but all of the same shape and density.
"This is before," Mr. Lynn, the owner of Murlynn Air Compressor in Red Hook, Brooklyn, said recently as he held up a glass jar filled with a murky brown mixture, tiny particles of black, charred residue floating inside.
Experiments involved different relative fractions of nitrogen and oxygen in the gas mixture, with particles of char and two different types of coal.
Naturally occurring particles smaller than 0.45 μm are not clearly defined spherical particles but rather a complex mixture of particles of different shapes and possibly agglomerates of very small particles.
Ambient PM is a complex and variable mixture of particles of varying size that are classified into coarse (PM2.5 10; from 2.5 μm to 10 μm in aerodynamic diameter), fine (PM2.5; < 2.5 μm), and ultrafine (PM0.1; < 0.1 μm) particles.
Ambient PM is a complex mixture of particles of varying size that are classified as coarse (PM2.5 10; 10 µm > PM > 2.5 µm in aerodynamic diameter), fine (PM2.5; PM < 2.5 µm), and ultrafine (PM0.1; PM < 0.1 µm) particles.
Similar experiments were also performed with mixtures of particles of smooth and rough surfaces.
A novel granular discrete element method (DEM) is introduced to simulate mixtures of particles of any convex shape.
The experiments have been carried out at pressures of 0.1, 2.2, 4.2 and 6.3 MN/m2 for 13 mixtures of particles of coal and char, differing in their granular composition.
