The paper presents a numerical simulation of two-phase turbulent flow in
straight horizontal channels of pneumatic transport with non-circular
cross-section. For the granular flow simulation, we have chosen the flow of
solid particles of quartz, flour, and ash in the flow of air, which is
transporting fluid. During the modeling of the flow, the transported solid
particles are reduced to spherical shapes. A correction of the stress model
of turbulence is performed by taking into account the influences of the
induction of secondary flows of the second order in the gas phase. The full
Reynolds stress model was used for modeling the turbulence, and the
complete model is used for the turbulent stresses and turbulent temperature
fluxes. All numerical experiments were conducted for the same initial flow
conditions and a single uniform grid was adopted for all numerical
experiments. The flow is observed in a straight channel of a square
cross-section and dimensions of sides of 200 mm and the length of 80 Dh.
During the simulation, the fineness of the numerical grid was also tested,
and the paper shows results of the numerical grid of the highest resolution
beyond which the fineness does not influence the obtained results. The paper
offers graphics of velocities of the solid particles transported by the
transporting fluid (air) along the channel.