TY - JOUR
TI - Two-phase flow in channels with non-circular cross-section of pneumatic transport of powder material
AU - Milanović Saša M
AU - Jovanović Miloš M
AU - Spasić Živan T
AU - Nikolić Boban D
JN - Thermal Science
PY - 2018
VL - 22
IS - 15
SP - 1407
EP - 1424
PT - Article
AB - 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.