Mathematical simulation of gas-dust flow in a nozzle-type separator
The study is about developing a gasdynamic model of motion of multispeed continua for the case of nozzles with complex geometry. These nozzles imitate the shape of a two-stage confusor-shaped dust cleaner. The paper studied the influence of force interaction between the gas phase and solid phase in the flow duct of the nozzle; this effect was studied for a wide range of input flow parameters. A special focus was on the regimes of gas-solid flows through curved channels for the case of high loads of solids at the nozzle inlet. A mathematical model was developed that takes into account the impact from the wall-bounced particles upon the distributions of gas phase and solid phase for the entire region. It was shown that account for particle bouncing produces an extremum in solids concentration distribution in the flow duct of the separator.